A. Annovi Istituto Nazionale di Fisica Nucleare, University and Scuola Normale Superiore of Pisa, I Pisa, Italy J. Antos Institute of Physics,

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1 [prl,showpacs,superscriptaddress,floatfix,12pt]revtex4 graphics makeidx colordvi plain document Measurement of Prompt Charm Meson Production Cross Sections in p p Collisions at s =1.96 TeV (Submitted to Physical Review Letters) Institute of Physics, Academia Sinica, Taipei, Taiwan 11529, Republic of China Argonne National Laboratory, Argonne, Illinois Istituto Nazionale di Fisica Nucleare, University of Bologna, I Bologna, Italy Brandeis University, Waltham, Massachusetts University of California at Davis, Davis, California University of California at Los Angeles, Los Angeles, California University of California at Santa Barbara, Santa Barbara, California Instituto de Fisica de Cantabria, CSIC- University of Cantabria, Santander, Spain Carnegie Mellon University, Pittsburgh, Pennsylvania Enrico Fermi Institute, University of Chicago, Chicago, Illinois Joint Institute for Nuclear Research, RU Dubna, Russia Duke University, Durham, North Carolina Fermi National Accelerator Laboratory, Batavia, Illinois University of Florida, Gainesville, Florida Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nucleare, I Frascati, Italy University of Geneva, CH-1211 Geneva 4, Switzerland Glasgow University, Glasgow G12 8QQ, United Kingdom Harvard University, Cambridge, Massachusetts The Helsinki Group: Helsinki Institute of Physics; and Division of High Energy Physics, Department of Physical Sciences, University of Helsinki, FIN Helsinki, Finland Hiroshima University, Higashi-Hiroshima 724, Japan University of Illinois, Urbana, Illinois The Johns Hopkins University, Baltimore, Maryland Institut für Experimentelle Kernphysik, Universität Karlsruhe, Karlsruhe, Germany High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305, Japan Center for High Energy Physics: Kyungpook National University, Taegu ; Seoul National University, Seoul ; and SungKyunKwan University, Suwon ; Korea Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California University of Liverpool, Liverpool L69 7ZE, United Kingdom University College London, London WC1E 6BT, United Kingdom Massachusetts Institute of Technology, Cambridge, Massachusetts University of Michigan, Ann Arbor, Michigan Michigan State University, East Lansing, Michigan Institution for Theoretical and Experimental Physics, ITEP, Moscow , Russia University of New Mexico, Albuquerque, New Mexico Northwestern University, Evanston, Illinois The Ohio State University, Columbus, Ohio Okayama University, Okayama , Japan Osaka City University, Osaka 588, Japan University of Oxford, Oxford OX1 3RH, United Kingdom Universitá di Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I Padova, Italy University of Pennsylvania, Philadelphia, Pennsylvania Istituto Nazionale di Fisica Nucleare, University and Scuola Normale Superiore of Pisa, I Pisa, Italy University of Pittsburgh, Pittsburgh, Pennsylvania Purdue University, West Lafayette, Indiana University of Rochester, Rochester, New York The Rockefeller University, New York, New York Instituto Nazionale de Fisica Nucleare, Sezione di Roma, University di Roma I, La Sapienza, Rutgers University, Piscataway, New Jersey Texas A&M University, College Station, Texas Texas Tech University, Lubbock, Texas Institute of Particle Physics, University of Toronto, Toronto M5S 1A7, Canada Istituto Nazionale di Fisica Nucleare, Universities of Trieste and Udine, Italy University of Tsukuba, Tsukuba, Ibaraki 305, Japan Tufts University, Medford, Massachusetts Waseda University, Tokyo 169, Japan University of Wisconsin, Madison, Wisconsin Yale University, New Haven, Connecticut D. Acosta University of Florida, Gainesville, Florida T. Affolder University of California at Santa Barbara, Santa Barbara, California M.H. Ahn Center for High Energy Physics: Kyungpook National University, Taegu ; Seoul National University, Seoul ; and SungKyunKwan University, Suwon ; Korea T. Akimoto University of Tsukuba, Tsukuba, Ibaraki 305, Japan M.G. Albrow Fermi National Accelerator Laboratory, Batavia, Illinois D. Ambrose University of Pennsylvania, Philadelphia, Pennsylvania D. Amidei University of Michigan, Ann Arbor, Michigan A. Anastassov Rutgers University, Piscataway, New Jersey K. Anikeev Massachusetts Institute of Technology, Cambridge, Massachusetts

2 A. Annovi Istituto Nazionale di Fisica Nucleare, University and Scuola Normale Superiore of Pisa, J. Antos Institute of Physics, Academia Sinica, Taipei, Taiwan 11529, Republic of China M. Aoki University of Tsukuba, Tsukuba, Ibaraki 305, Japan G. Apollinari Fermi National Accelerator Laboratory, Batavia, Illinois J-F. Arguin Institute of Particle Physics, University of Toronto, Toronto M5S 1A7, Canada T. Arisawa Waseda University, Tokyo 169, Japan A. Artikov Joint Institute for Nuclear Research, RU Dubna, Russia T. Asakawa University of Tsukuba, Tsukuba, Ibaraki 305, Japan W. Ashmanskas Argonne National Laboratory, Argonne, Illinois A. Attal University of California at Los Angeles, Los Angeles, California F. Azfar University of Oxford, Oxford OX1 3RH, United Kingdom P. Azzi-Bacchetta Universitá di Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I Padova, Italy N. Bacchetta Universitá di Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I Padova, Italy H. Bachacou Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California W. Badgett Fermi National Accelerator Laboratory, Batavia, Illinois S. Bailey Harvard University, Cambridge, Massachusetts A. Barbaro-Galtieri Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California G. Barker Institut für Experimentelle Kernphysik, Universität Karlsruhe, Karlsruhe, Germany V.E. Barnes Purdue University, West Lafayette, Indiana B.A. Barnett The Johns Hopkins University, Baltimore, Maryland S. Baroiant University of California at Davis, Davis, California M. Barone Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nucleare, I Frascati, Italy G. Bauer Massachusetts Institute of Technology, Cambridge, Massachusetts F. Bedeschi Istituto Nazionale di Fisica Nucleare, University and Scuola Normale Superiore of Pisa, S. Behari The Johns Hopkins University, Baltimore, Maryland S. Belforte Istituto Nazionale di Fisica Nucleare, Universities of Trieste and Udine, Italy W.H. Bell Glasgow University, Glasgow G12 8QQ, United Kingdom G. Bellettini Istituto Nazionale di Fisica Nucleare, University and Scuola Normale Superiore of Pisa, J. Bellinger University of Wisconsin, Madison, Wisconsin D. Benjamin Duke University, Durham, North Carolina A. Beretvas Fermi National Accelerator Laboratory, Batavia, Illinois A. Bhatti The Rockefeller University, New York, New York M. Binkley Fermi National Accelerator Laboratory, Batavia, Illinois D. Bisello Universitá di Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I Padova, Italy M. Bishai Fermi National Accelerator Laboratory, Batavia, Illinois R.E. Blair Argonne National Laboratory, Argonne, Illinois C. Blocker Brandeis University, Waltham, Massachusetts K. Bloom University of Michigan, Ann Arbor, Michigan B. Blumenfeld The Johns Hopkins University, Baltimore, Maryland A. Bocci The Rockefeller University, New York, New York A. Bodek University of Rochester, Rochester, New York G. Bolla Purdue University, West Lafayette, Indiana A. Bolshov Massachusetts Institute of Technology, Cambridge, Massachusetts P.S.L. Booth University of Liverpool, Liverpool L69 7ZE, United Kingdom D. Bortoletto Purdue University, West Lafayette, Indiana J. Boudreau University of Pittsburgh, Pittsburgh, Pennsylvania

3 S. Bourov Fermi National Accelerator Laboratory, Batavia, Illinois C. Bromberg Michigan State University, East Lansing, Michigan M. Brozovic Duke University, Durham, North Carolina E. Brubaker Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California J. Budagov Joint Institute for Nuclear Research, RU Dubna, Russia H.S. Budd University of Rochester, Rochester, New York K. Burkett Harvard University, Cambridge, Massachusetts G. Busetto Universitá di Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I Padova, Italy P. Bussey Glasgow University, Glasgow G12 8QQ, United Kingdom K.L. Byrum Argonne National Laboratory, Argonne, Illinois S. Cabrera Duke University, Durham, North Carolina P. Calafiura Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California M. Campanelli University of Geneva, CH-1211 Geneva 4, Switzerland M. Campbell University of Michigan, Ann Arbor, Michigan A. Canepa Purdue University, West Lafayette, Indiana D. Carlsmith University of Wisconsin, Madison, Wisconsin S. Carron Duke University, Durham, North Carolina R. Carosi Istituto Nazionale di Fisica Nucleare, University and Scuola Normale Superiore of Pisa, I M. Casarsa Istituto Nazionale di Fisica Nucleare, Universities of Trieste and Udine, Italy W. Caskey University of California at Davis, Davis, California A. Castro Istituto Nazionale di Fisica Nucleare, University of Bologna, I Bologna, Italy P. Catastini Istituto Nazionale di Fisica Nucleare, University and Scuola Normale Superiore of Pisa, D. Cauz Istituto Nazionale di Fisica Nucleare, Universities of Trieste and Udine, Italy A. Cerri Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California C. Cerri Istituto Nazionale di Fisica Nucleare, University and Scuola Normale Superiore of Pisa, I L. Cerrito University of Illinois, Urbana, Illinois J. Chapman University of Michigan, Ann Arbor, Michigan C. Chen University of Pennsylvania, Philadelphia, Pennsylvania Y.C. Chen Institute of Physics, Academia Sinica, Taipei, Taiwan 11529, Republic of China M. Chertok University of California at Davis, Davis, California G. Chiarelli Istituto Nazionale di Fisica Nucleare, University and Scuola Normale Superiore of Pisa, G. Chlachidze Joint Institute for Nuclear Research, RU Dubna, Russia F. Chlebana Fermi National Accelerator Laboratory, Batavia, Illinois K. Cho Center for High Energy Physics: Kyungpook National University, Taegu ; Seoul National University, Seoul ; and SungKyunKwan University, Suwon ; Korea D. Chokheli Joint Institute for Nuclear Research, RU Dubna, Russia M.L. Chu Institute of Physics, Academia Sinica, Taipei, Taiwan 11529, Republic of China J.Y. Chung The Ohio State University, Columbus, Ohio W-H. Chung University of Wisconsin, Madison, Wisconsin Y.S. Chung University of Rochester, Rochester, New York C.I. Ciobanu University of Illinois, Urbana, Illinois M.A. Ciocci Istituto Nazionale di Fisica Nucleare, University and Scuola Normale Superiore of Pisa, A.G. Clark University of Geneva, CH-1211 Geneva 4, Switzerland M.N. Coca University of Rochester, Rochester, New York A. Connolly Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California M.E. Convery The Rockefeller University, New York, New York J. Conway Rutgers University, Piscataway, New Jersey

4 M. Cordelli Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nucleare, I Frascati, Italy G. Cortiana Universitá di Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I Padova, Italy J. Cranshaw Texas Tech University, Lubbock, Texas R. Culbertson Fermi National Accelerator Laboratory, Batavia, Illinois C. Currat Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California D. Cyr University of Wisconsin, Madison, Wisconsin D. Dagenhart Brandeis University, Waltham, Massachusetts S. DaRonco Universitá di Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I Padova, Italy S. D Auria Glasgow University, Glasgow G12 8QQ, United Kingdom P. de Barbaro University of Rochester, Rochester, New York S. De Cecco Instituto Nazionale de Fisica Nucleare, Sezione di Roma, University di Roma I, La Sapienza, S. Dell Agnello Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nucleare, I Frascati, Italy M. Dell Orso Istituto Nazionale di Fisica Nucleare, University and Scuola Normale Superiore of Pisa, S. Demers University of Rochester, Rochester, New York L. Demortier The Rockefeller University, New York, New York M. Deninno Istituto Nazionale di Fisica Nucleare, University of Bologna, I Bologna, Italy D. De Pedis Instituto Nazionale de Fisica Nucleare, Sezione di Roma, University di Roma I, La Sapienza, P.F. Derwent Fermi National Accelerator Laboratory, Batavia, Illinois C. Dionisi Instituto Nazionale de Fisica Nucleare, Sezione di Roma, University di Roma I, La Sapienza, J.R. Dittmann Fermi National Accelerator Laboratory, Batavia, Illinois P. Doksus University of Illinois, Urbana, Illinois A. Dominguez Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California S. Donati Istituto Nazionale di Fisica Nucleare, University and Scuola Normale Superiore of Pisa, I M. D Onofrio University of Geneva, CH-1211 Geneva 4, Switzerland T. Dorigo Universitá di Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I Padova, Italy V. Drollinger University of New Mexico, Albuquerque, New Mexico K. Ebina Waseda University, Tokyo 169, Japan N. Eddy University of Illinois, Urbana, Illinois R. Ely Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California R. Erbacher Fermi National Accelerator Laboratory, Batavia, Illinois M. Erdmann Institut für Experimentelle Kernphysik, Universität Karlsruhe, Karlsruhe, Germany D. Errede University of Illinois, Urbana, Illinois S. Errede University of Illinois, Urbana, Illinois R. Eusebi University of Rochester, Rochester, New York H-C. Fang Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California S. Farrington Glasgow University, Glasgow G12 8QQ, United Kingdom I. Fedorko Istituto Nazionale di Fisica Nucleare, University and Scuola Normale Superiore of Pisa, R.G. Feild Yale University, New Haven, Connecticut M. Feindt Institut für Experimentelle Kernphysik, Universität Karlsruhe, Karlsruhe, Germany J.P. Fernandez Purdue University, West Lafayette, Indiana C. Ferretti University of Michigan, Ann Arbor, Michigan R.D. Field University of Florida, Gainesville, Florida

5 I. Fiori Istituto Nazionale di Fisica Nucleare, University and Scuola Normale Superiore of Pisa, I G. Flanagan Michigan State University, East Lansing, Michigan B. Flaugher Fermi National Accelerator Laboratory, Batavia, Illinois L.R. Flores-Castillo University of Pittsburgh, Pittsburgh, Pennsylvania A. Foland Harvard University, Cambridge, Massachusetts S. Forrester University of California at Davis, Davis, California G.W. Foster Fermi National Accelerator Laboratory, Batavia, Illinois M. Franklin Harvard University, Cambridge, Massachusetts H. Frisch Enrico Fermi Institute, University of Chicago, Chicago, Illinois Y. Fujii High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305, Japan I. Furic Massachusetts Institute of Technology, Cambridge, Massachusetts A. Gallas Northwestern University, Evanston, Illinois M. Gallinaro The Rockefeller University, New York, New York J. Galyardt Carnegie Mellon University, Pittsburgh, Pennsylvania M. Garcia-Sciveres Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California A.F. Garfinkel Purdue University, West Lafayette, Indiana C. Gay Yale University, New Haven, Connecticut H. Gerberich Duke University, Durham, North Carolina E. Gerchtein Carnegie Mellon University, Pittsburgh, Pennsylvania D.W. Gerdes University of Michigan, Ann Arbor, Michigan S. Giagu Instituto Nazionale de Fisica Nucleare, Sezione di Roma, University di Roma I, La Sapienza, P. Giannetti Istituto Nazionale di Fisica Nucleare, University and Scuola Normale Superiore of Pisa, A. Gibson Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California K. Gibson Carnegie Mellon University, Pittsburgh, Pennsylvania C. Ginsburg University of Wisconsin, Madison, Wisconsin K. Giolo Purdue University, West Lafayette, Indiana M. Giordani University of California at Davis, Davis, California G. Giurgiu Carnegie Mellon University, Pittsburgh, Pennsylvania V. Glagolev Joint Institute for Nuclear Research, RU Dubna, Russia D. Glenzinski Fermi National Accelerator Laboratory, Batavia, Illinois M. Gold University of New Mexico, Albuquerque, New Mexico N. Goldschmidt University of Michigan, Ann Arbor, Michigan D. Goldstein University of California at Los Angeles, Los Angeles, California J. Goldstein Fermi National Accelerator Laboratory, Batavia, Illinois G. Gomez Instituto de Fisica de Cantabria, CSIC-University of Cantabria, Santander, Spain G. Gomez-Ceballos Massachusetts Institute of Technology, Cambridge, Massachusetts M. Goncharov Texas A&M University, College Station, Texas I. Gorelov University of New Mexico, Albuquerque, New Mexico A.T. Goshaw Duke University, Durham, North Carolina Y. Gotra University of Pittsburgh, Pittsburgh, Pennsylvania K. Goulianos The Rockefeller University, New York, New York A. Gresele Istituto Nazionale di Fisica Nucleare, University of Bologna, I Bologna, Italy G. Grim University of California at Davis, Davis, California C. Grosso-Pilcher Enrico Fermi Institute, University of Chicago, Chicago, Illinois M. Guenther Purdue University, West Lafayette, Indiana J. Guimaraes da Costa Harvard University, Cambridge, Massachusetts C. Haber Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California K. Hahn University of Pennsylvania, Philadelphia, Pennsylvania S.R. Hahn Fermi National Accelerator Laboratory, Batavia, Illinois E. Halkiadakis University of Rochester, Rochester, New York

6 C. Hall Harvard University, Cambridge, Massachusetts R. Handler University of Wisconsin, Madison, Wisconsin F. Happacher Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nucleare, I Frascati, Italy K. Hara University of Tsukuba, Tsukuba, Ibaraki 305, Japan M. Hare Tufts University, Medford, Massachusetts R.F. Harr University of Michigan, Ann Arbor, Michigan R.M. Harris Fermi National Accelerator Laboratory, Batavia, Illinois F. Hartmann Institut für Experimentelle Kernphysik, Universität Karlsruhe, Karlsruhe, Germany K. Hatakeyama The Rockefeller University, New York, New York J. Hauser University of California at Los Angeles, Los Angeles, California C. Hays Duke University, Durham, North Carolina E. Heider Tufts University, Medford, Massachusetts B. Heinemann University of Liverpool, Liverpool L69 7ZE, United Kingdom J. Heinrich University of Pennsylvania, Philadelphia, Pennsylvania M. Hennecke Institut für Experimentelle Kernphysik, Universität Karlsruhe, Karlsruhe, Germany M. Herndon The Johns Hopkins University, Baltimore, Maryland C. Hill University of California at Santa Barbara, Santa Barbara, California D. Hirschbuehl Institut für Experimentelle Kernphysik, Universität Karlsruhe, Karlsruhe, Germany A. Hocker University of Rochester, Rochester, New York K.D. Hoffman Enrico Fermi Institute, University of Chicago, Chicago, Illinois A. Holloway Harvard University, Cambridge, Massachusetts S. Hou Institute of Physics, Academia Sinica, Taipei, Taiwan 11529, Republic of China M.A. Houlden University of Liverpool, Liverpool L69 7ZE, United Kingdom B.T. Huffman University of Oxford, Oxford OX1 3RH, United Kingdom R.E. Hughes The Ohio State University, Columbus, Ohio J. Huston Michigan State University, East Lansing, Michigan K. Ikado Waseda University, Tokyo 169, Japan J. Incandela University of California at Santa Barbara, Santa Barbara, California G. Introzzi Istituto Nazionale di Fisica Nucleare, University and Scuola Normale Superiore of Pisa, M. Iori Instituto Nazionale de Fisica Nucleare, Sezione di Roma, University di Roma I, La Sapienza, Y. Ishizawa University of Tsukuba, Tsukuba, Ibaraki 305, Japan C. Issever University of California at Santa Barbara, Santa Barbara, California A. Ivanov University of Rochester, Rochester, New York Y. Iwata Hiroshima University, Higashi-Hiroshima 724, Japan B. Iyutin Massachusetts Institute of Technology, Cambridge, Massachusetts E. James University of Michigan, Ann Arbor, Michigan D. Jang Rutgers University, Piscataway, New Jersey J. Jarrell University of New Mexico, Albuquerque, New Mexico D. Jeans Instituto Nazionale de Fisica Nucleare, Sezione di Roma, University di Roma I, La Sapienza, H. Jensen Fermi National Accelerator Laboratory, Batavia, Illinois M. Jones University of Pennsylvania, Philadelphia, Pennsylvania S.Y. Jun Carnegie Mellon University, Pittsburgh, Pennsylvania T. Junk University of Illinois, Urbana, Illinois T. Kamon Texas A&M University, College Station, Texas J. Kang University of Michigan, Ann Arbor, Michigan M. Karagoz Unel Northwestern University, Evanston, Illinois P.E. Karchin University of Michigan, Ann Arbor, Michigan S. Kartal Fermi National Accelerator Laboratory, Batavia, Illinois

7 Y. Kato Osaka City University, Osaka 588, Japan Y. Kemp Institut für Experimentelle Kernphysik, Universität Karlsruhe, Karlsruhe, Germany R. Kephart Fermi National Accelerator Laboratory, Batavia, Illinois U. Kerzel Institut für Experimentelle Kernphysik, Universität Karlsruhe, Karlsruhe, Germany D. Khazins Duke University, Durham, North Carolina V. Khotilovich Texas A&M University, College Station, Texas B. Kilminster University of Rochester, Rochester, New York B.J. Kim Center for High Energy Physics: Kyungpook National University, Taegu ; Seoul National University, Seoul ; and SungKyunKwan University, Suwon ; Korea D.H. Kim Center for High Energy Physics: Kyungpook National University, Taegu ; Seoul National University, Seoul ; and SungKyunKwan University, Suwon ; Korea H.S. Kim University of Illinois, Urbana, Illinois J.E. Kim Center for High Energy Physics: Kyungpook National University, Taegu ; Seoul National University, Seoul ; and SungKyunKwan University, Suwon ; Korea M.J. Kim Carnegie Mellon University, Pittsburgh, Pennsylvania M.S. Kim Center for High Energy Physics: Kyungpook National University, Taegu ; Seoul National University, Seoul ; and SungKyunKwan University, Suwon ; Korea S.B. Kim Center for High Energy Physics: Kyungpook National University, Taegu ; Seoul National University, Seoul ; and SungKyunKwan University, Suwon ; Korea S.H. Kim University of Tsukuba, Tsukuba, Ibaraki 305, Japan T.H. Kim Massachusetts Institute of Technology, Cambridge, Massachusetts Y.K. Kim Enrico Fermi Institute, University of Chicago, Chicago, Illinois B.T. King University of Liverpool, Liverpool L69 7ZE, United Kingdom M. Kirby Duke University, Durham, North Carolina M. Kirk Brandeis University, Waltham, Massachusetts L. Kirsch Brandeis University, Waltham, Massachusetts S. Klimenko University of Florida, Gainesville, Florida B. Knuteson Enrico Fermi Institute, University of Chicago, Chicago, Illinois H. Kobayashi University of Tsukuba, Tsukuba, Ibaraki 305, Japan P. Koehn The Ohio State University, Columbus, Ohio K. Kondo Waseda University, Tokyo 169, Japan J. Konigsberg University of Florida, Gainesville, Florida K. Kordas Institute of Particle Physics, University of Toronto, Toronto M5S 1A7, Canada A. Korn Massachusetts Institute of Technology, Cambridge, Massachusetts A. Korytov University of Florida, Gainesville, Florida K. Kotelnikov Institution for Theoretical and Experimental Physics, ITEP, Moscow , Russia A.V. Kotwal Duke University, Durham, North Carolina A. Kovalev University of Pennsylvania, Philadelphia, Pennsylvania J. Kraus University of Illinois, Urbana, Illinois I. Kravchenko Massachusetts Institute of Technology, Cambridge, Massachusetts A. Kreymer Fermi National Accelerator Laboratory, Batavia, Illinois J. Kroll University of Pennsylvania, Philadelphia, Pennsylvania M. Kruse Duke University, Durham, North Carolina V. Krutelyov Texas A&M University, College Station, Texas S.E. Kuhlmann Argonne National Laboratory, Argonne, Illinois N. Kuznetsova Fermi National Accelerator Laboratory, Batavia, Illinois A.T. Laasanen Purdue University, West Lafayette, Indiana S. Lai Institute of Particle Physics, University of Toronto, Toronto M5S 1A7, Canada S. Lami The Rockefeller University, New York, New York S. Lammel Fermi National Accelerator Laboratory, Batavia, Illinois J. Lancaster Duke University, Durham, North Carolina M. Lancaster University College London, London WC1E 6BT, United Kingdom R. Lander University of California at Davis, Davis, California

8 K. Lannon University of Illinois, Urbana, Illinois A. Lath Rutgers University, Piscataway, New Jersey G. Latino University of New Mexico, Albuquerque, New Mexico R. Lauhakangas The Helsinki Group: Helsinki Institute of Physics; and Division of High Energy Physics, Department of Physical Sciences, University of Helsinki, FIN Helsinki, Finland I. Lazzizzera Universitá di Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I Padova, Italy Y. Le The Johns Hopkins University, Baltimore, Maryland C. Lecci Institut für Experimentelle Kernphysik, Universität Karlsruhe, Karlsruhe, Germany T. LeCompte Argonne National Laboratory, Argonne, Illinois J. Lee Center for High Energy Physics: Kyungpook National University, Taegu ; Seoul National University, Seoul ; and SungKyunKwan University, Suwon ; Korea J. Lee University of Rochester, Rochester, New York S.W. Lee Texas A&M University, College Station, Texas N. Leonardo Massachusetts Institute of Technology, Cambridge, Massachusetts S. Leone Istituto Nazionale di Fisica Nucleare, University and Scuola Normale Superiore of Pisa, I J.D. Lewis Fermi National Accelerator Laboratory, Batavia, Illinois K. Li Yale University, New Haven, Connecticut C.S. Lin Fermi National Accelerator Laboratory, Batavia, Illinois M. Lindgren University of California at Los Angeles, Los Angeles, California T.M. Liss University of Illinois, Urbana, Illinois D.O. Litvintsev Fermi National Accelerator Laboratory, Batavia, Illinois T. Liu Fermi National Accelerator Laboratory, Batavia, Illinois Y. Liu University of Geneva, CH-1211 Geneva 4, Switzerland N.S. Lockyer University of Pennsylvania, Philadelphia, Pennsylvania A. Loginov Institution for Theoretical and Experimental Physics, ITEP, Moscow , Russia J. Loken University of Oxford, Oxford OX1 3RH, United Kingdom M. Loreti Universitá di Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I Padova, Italy P. Loverre Instituto Nazionale de Fisica Nucleare, Sezione di Roma, University di Roma I, La Sapienza, D. Lucchesi Universitá di Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I Padova, Italy P. Lukens Fermi National Accelerator Laboratory, Batavia, Illinois L. Lyons University of Oxford, Oxford OX1 3RH, United Kingdom J. Lys Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California D. MacQueen Institute of Particle Physics, University of Toronto, Toronto M5S 1A7, Canada R. Madrak Harvard University, Cambridge, Massachusetts K. Maeshima Fermi National Accelerator Laboratory, Batavia, Illinois P. Maksimovic The Johns Hopkins University, Baltimore, Maryland L. Malferrari Istituto Nazionale di Fisica Nucleare, University of Bologna, I Bologna, Italy G. Manca University of Oxford, Oxford OX1 3RH, United Kingdom R. Marginean The Ohio State University, Columbus, Ohio A. Martin Yale University, New Haven, Connecticut M. Martin The Johns Hopkins University, Baltimore, Maryland V. Martin Northwestern University, Evanston, Illinois M. Martinez Fermi National Accelerator Laboratory, Batavia, Illinois T. Maruyama Enrico Fermi Institute, University of Chicago, Chicago, Illinois H. Matsunaga University of Tsukuba, Tsukuba, Ibaraki 305, Japan M. Mattson University of Michigan, Ann Arbor, Michigan P. Mazzanti Istituto Nazionale di Fisica Nucleare, University of Bologna, I Bologna, Italy K.S. McFarland University of Rochester, Rochester, New York

9 D. McGivern University College London, London WC1E 6BT, United Kingdom P.M. McIntyre Texas A&M University, College Station, Texas P. McNamara Rutgers University, Piscataway, New Jersey R. McNulty University of Liverpool, Liverpool L69 7ZE, United Kingdom S. Menzemer Institut für Experimentelle Kernphysik, Universität Karlsruhe, Karlsruhe, Germany A. Menzione Istituto Nazionale di Fisica Nucleare, University and Scuola Normale Superiore of Pisa, P. Merkel Fermi National Accelerator Laboratory, Batavia, Illinois C. Mesropian The Rockefeller University, New York, New York A. Messina Instituto Nazionale de Fisica Nucleare, Sezione di Roma, University di Roma I, La Sapienza, A. Meyer Fermi National Accelerator Laboratory, Batavia, Illinois T. Miao Fermi National Accelerator Laboratory, Batavia, Illinois L. Miller Harvard University, Cambridge, Massachusetts R. Miller Michigan State University, East Lansing, Michigan J.S. Miller University of Michigan, Ann Arbor, Michigan R. Miquel Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California S. Miscetti Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nucleare, I Frascati, Italy M. Mishina Fermi National Accelerator Laboratory, Batavia, Illinois G. Mitselmakher University of Florida, Gainesville, Florida A. Miyamoto High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305, Japan Y. Miyazaki Osaka City University, Osaka 588, Japan N. Moggi Istituto Nazionale di Fisica Nucleare, University of Bologna, I Bologna, Italy R. Moore Fermi National Accelerator Laboratory, Batavia, Illinois M. Morello Istituto Nazionale di Fisica Nucleare, University and Scuola Normale Superiore of Pisa, T. Moulik Purdue University, West Lafayette, Indiana A. Mukherjee Fermi National Accelerator Laboratory, Batavia, Illinois M. Mulhearn Massachusetts Institute of Technology, Cambridge, Massachusetts T. Muller Institut für Experimentelle Kernphysik, Universität Karlsruhe, Karlsruhe, Germany R. Mumford The Johns Hopkins University, Baltimore, Maryland A. Munar University of Pennsylvania, Philadelphia, Pennsylvania P. Murat Fermi National Accelerator Laboratory, Batavia, Illinois S. Murgia Michigan State University, East Lansing, Michigan J. Nachtman Fermi National Accelerator Laboratory, Batavia, Illinois S. Nahn Yale University, New Haven, Connecticut I. Nakamura University of Pennsylvania, Philadelphia, Pennsylvania I. Nakano Okayama University, Okayama , Japan A. Napier Tufts University, Medford, Massachusetts R. Napora The Johns Hopkins University, Baltimore, Maryland V. Necula University of Florida, Gainesville, Florida F. Niell University of Michigan, Ann Arbor, Michigan J. Nielsen Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California C. Nelson Fermi National Accelerator Laboratory, Batavia, Illinois T. Nelson Fermi National Accelerator Laboratory, Batavia, Illinois C. Neu The Ohio State University, Columbus, Ohio M.S. Neubauer Massachusetts Institute of Technology, Cambridge, Massachusetts C. Newman-Holmes Fermi National Accelerator Laboratory, Batavia, Illinois A-S. Nicollerat University of Geneva, CH-1211 Geneva 4, Switzerland T. Nigmanov University of Pittsburgh, Pittsburgh, Pennsylvania H. Niu Brandeis University, Waltham, Massachusetts L. Nodulman Argonne National Laboratory, Argonne, Illinois

10 K. Oesterberg The Helsinki Group: Helsinki Institute of Physics; and Division of High Energy Physics, Department of Physical Sciences, University of Helsinki, FIN Helsinki, Finland T. Ogawa Waseda University, Tokyo 169, Japan S. Oh Duke University, Durham, North Carolina Y.D. Oh Center for High Energy Physics: Kyungpook National University, Taegu ; Seoul National University, Seoul ; and SungKyunKwan University, Suwon ; Korea T. Ohsugi Hiroshima University, Higashi-Hiroshima 724, Japan R. Oishi University of Tsukuba, Tsukuba, Ibaraki 305, Japan T. Okusawa Osaka City University, Osaka 588, Japan R. Oldeman University of Pennsylvania, Philadelphia, Pennsylvania R. Orava The Helsinki Group: Helsinki Institute of Physics; and Division of High Energy Physics, Department of Physical Sciences, University of Helsinki, FIN Helsinki, Finland W. Orejudos Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California C. Pagliarone Istituto Nazionale di Fisica Nucleare, University and Scuola Normale Superiore of Pisa, F. Palmonari Istituto Nazionale di Fisica Nucleare, University and Scuola Normale Superiore of Pisa, R. Paoletti Istituto Nazionale di Fisica Nucleare, University and Scuola Normale Superiore of Pisa, V. Papadimitriou Texas Tech University, Lubbock, Texas D. Partos Brandeis University, Waltham, Massachusetts S. Pashapour Institute of Particle Physics, University of Toronto, Toronto M5S 1A7, Canada J. Patrick Fermi National Accelerator Laboratory, Batavia, Illinois G. Pauletta Istituto Nazionale di Fisica Nucleare, Universities of Trieste and Udine, Italy M. Paulini Carnegie Mellon University, Pittsburgh, Pennsylvania T. Pauly University of Oxford, Oxford OX1 3RH, United Kingdom C. Paus Massachusetts Institute of Technology, Cambridge, Massachusetts D. Pellett University of California at Davis, Davis, California A. Penzo Istituto Nazionale di Fisica Nucleare, Universities of Trieste and Udine, Italy T.J. Phillips Duke University, Durham, North Carolina G. Piacentino Istituto Nazionale di Fisica Nucleare, University and Scuola Normale Superiore of Pisa, J. Piedra Instituto de Fisica de Cantabria, CSIC-University of Cantabria, Santander, Spain K.T. Pitts University of Illinois, Urbana, Illinois A. Pompoš Purdue University, West Lafayette, Indiana L. Pondrom University of Wisconsin, Madison, Wisconsin G. Pope University of Pittsburgh, Pittsburgh, Pennsylvania O. Poukhov Joint Institute for Nuclear Research, RU Dubna, Russia F. Prakoshyn Joint Institute for Nuclear Research, RU Dubna, Russia T. Pratt University of Liverpool, Liverpool L69 7ZE, United Kingdom A. Pronko University of Florida, Gainesville, Florida J. Proudfoot Argonne National Laboratory, Argonne, Illinois F. Ptohos Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nucleare, I Frascati, Italy G. Punzi Istituto Nazionale di Fisica Nucleare, University and Scuola Normale Superiore of Pisa, I J. Rademacker University of Oxford, Oxford OX1 3RH, United Kingdom A. Rakitine Massachusetts Institute of Technology, Cambridge, Massachusetts S. Rappoccio Harvard University, Cambridge, Massachusetts F. Ratnikov Rutgers University, Piscataway, New Jersey H. Ray University of Michigan, Ann Arbor, Michigan A. Reichold University of Oxford, Oxford OX1 3RH, United Kingdom V. Rekovic University of New Mexico, Albuquerque, New Mexico P. Renton University of Oxford, Oxford OX1 3RH, United Kingdom 10

11 M. Rescigno Instituto Nazionale de Fisica Nucleare, Sezione di Roma, University di Roma I, La Sapienza, F. Rimondi Istituto Nazionale di Fisica Nucleare, University of Bologna, I Bologna, Italy K. Rinnert Institut für Experimentelle Kernphysik, Universität Karlsruhe, Karlsruhe, Germany L. Ristori Istituto Nazionale di Fisica Nucleare, University and Scuola Normale Superiore of Pisa, I M. Riveline Institute of Particle Physics, University of Toronto, Toronto M5S 1A7, Canada W.J. Robertson Duke University, Durham, North Carolina A. Robson University of Oxford, Oxford OX1 3RH, United Kingdom T. Rodrigo Instituto de Fisica de Cantabria, CSIC-University of Cantabria, Santander, Spain S. Rolli Tufts University, Medford, Massachusetts L. Rosenson Massachusetts Institute of Technology, Cambridge, Massachusetts R. Roser Fermi National Accelerator Laboratory, Batavia, Illinois R. Rossin Universitá di Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I Padova, Italy C. Rott Purdue University, West Lafayette, Indiana J. Russ Carnegie Mellon University, Pittsburgh, Pennsylvania A. Ruiz Instituto de Fisica de Cantabria, CSIC-University of Cantabria, Santander, Spain D. Ryan Tufts University, Medford, Massachusetts H. Saarikko The Helsinki Group: Helsinki Institute of Physics; and Division of High Energy Physics, Department of Physical Sciences, University of Helsinki, FIN Helsinki, Finland A. Safonov University of California at Davis, Davis, California R. St. Denis Glasgow University, Glasgow G12 8QQ, United Kingdom W.K. Sakumoto University of Rochester, Rochester, New York D. Saltzberg University of California at Los Angeles, Los Angeles, California C. Sanchez The Ohio State University, Columbus, Ohio A. Sansoni Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nucleare, I Frascati, Italy L. Santi Istituto Nazionale di Fisica Nucleare, Universities of Trieste and Udine, Italy S. Sarkar Instituto Nazionale de Fisica Nucleare, Sezione di Roma, University di Roma I, La Sapienza, K. Sato University of Tsukuba, Tsukuba, Ibaraki 305, Japan P. Savard Institute of Particle Physics, University of Toronto, Toronto M5S 1A7, Canada A. Savoy-Navarro Fermi National Accelerator Laboratory, Batavia, Illinois P. Schemitz Institut für Experimentelle Kernphysik, Universität Karlsruhe, Karlsruhe, Germany P. Schlabach Fermi National Accelerator Laboratory, Batavia, Illinois E.E. Schmidt Fermi National Accelerator Laboratory, Batavia, Illinois M.P. Schmidt Yale University, New Haven, Connecticut M. Schmitt Northwestern University, Evanston, Illinois G. Schofield University of California at Davis, Davis, California L. Scodellaro Universitá di Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I Padova, Italy A. Scribano Istituto Nazionale di Fisica Nucleare, University and Scuola Normale Superiore of Pisa, F. Scuri Istituto Nazionale di Fisica Nucleare, University and Scuola Normale Superiore of Pisa, I A. Sedov Purdue University, West Lafayette, Indiana S. Seidel University of New Mexico, Albuquerque, New Mexico Y. Seiya University of Tsukuba, Tsukuba, Ibaraki 305, Japan F. Semeria Istituto Nazionale di Fisica Nucleare, University of Bologna, I Bologna, Italy L. Sexton-Kennedy Fermi National Accelerator Laboratory, Batavia, Illinois I. Sfiligoi Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nucleare, I Frascati, Italy M.D. Shapiro Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California

12 T. Shears University of Liverpool, Liverpool L69 7ZE, United Kingdom P.F. Shepard University of Pittsburgh, Pittsburgh, Pennsylvania M. Shimojima University of Tsukuba, Tsukuba, Ibaraki 305, Japan M. Shochet Enrico Fermi Institute, University of Chicago, Chicago, Illinois Y. Shon University of Wisconsin, Madison, Wisconsin A. Sidoti Istituto Nazionale di Fisica Nucleare, University and Scuola Normale Superiore of Pisa, I M. Siket Institute of Physics, Academia Sinica, Taipei, Taiwan 11529, Republic of China A. Sill Texas Tech University, Lubbock, Texas P. Sinervo Institute of Particle Physics, University of Toronto, Toronto M5S 1A7, Canada A. Sisakyan Joint Institute for Nuclear Research, RU Dubna, Russia A. Skiba Institut für Experimentelle Kernphysik, Universität Karlsruhe, Karlsruhe, Germany A.J. Slaughter Fermi National Accelerator Laboratory, Batavia, Illinois K. Sliwa Tufts University, Medford, Massachusetts J.R. Smith University of California at Davis, Davis, California F.D. Snider Fermi National Accelerator Laboratory, Batavia, Illinois R. Snihur University College London, London WC1E 6BT, United Kingdom S.V. Somalwar Rutgers University, Piscataway, New Jersey J. Spalding Fermi National Accelerator Laboratory, Batavia, Illinois M. Spezziga Texas Tech University, Lubbock, Texas L. Spiegel Fermi National Accelerator Laboratory, Batavia, Illinois F. Spinella Istituto Nazionale di Fisica Nucleare, University and Scuola Normale Superiore of Pisa, M. Spiropulu Enrico Fermi Institute, University of Chicago, Chicago, Illinois H. Stadie Institut für Experimentelle Kernphysik, Universität Karlsruhe, Karlsruhe, Germany B. Stelzer Institute of Particle Physics, University of Toronto, Toronto M5S 1A7, Canada O. Stelzer-Chilton Institute of Particle Physics, University of Toronto, Toronto M5S 1A7, Canada J. Strologas University of Illinois, Urbana, Illinois D. Stuart University of California at Santa Barbara, Santa Barbara, California A. Sukhanov University of Florida, Gainesville, Florida K. Sumorok Massachusetts Institute of Technology, Cambridge, Massachusetts H. Sun Tufts University, Medford, Massachusetts T. Suzuki University of Tsukuba, Tsukuba, Ibaraki 305, Japan A. Taffard University of Illinois, Urbana, Illinois S.F. Takach University of Michigan, Ann Arbor, Michigan H. Takano University of Tsukuba, Tsukuba, Ibaraki 305, Japan R. Takashima Hiroshima University, Higashi-Hiroshima 724, Japan Y. Takeuchi University of Tsukuba, Tsukuba, Ibaraki 305, Japan K. Takikawa University of Tsukuba, Tsukuba, Ibaraki 305, Japan P. Tamburello Duke University, Durham, North Carolina M. Tanaka Argonne National Laboratory, Argonne, Illinois R. Tanaka Okayama University, Okayama , Japan B. Tannenbaum University of California at Los Angeles, Los Angeles, California N. Tanimoto Okayama University, Okayama , Japan S. Tapprogge The Helsinki Group: Helsinki Institute of Physics; and Division of High Energy Physics, Department of Physical Sciences, University of Helsinki, FIN Helsinki, Finland M. Tecchio University of Michigan, Ann Arbor, Michigan P.K. Teng Institute of Physics, Academia Sinica, Taipei, Taiwan 11529, Republic of China K. Terashi The Rockefeller University, New York, New York R.J. Tesarek Fermi National Accelerator Laboratory, Batavia, Illinois S. Tether Massachusetts Institute of Technology, Cambridge, Massachusetts J. Thom Fermi National Accelerator Laboratory, Batavia, Illinois A.S. Thompson Glasgow University, Glasgow G12 8QQ, United Kingdom 12

13 E. Thomson The Ohio State University, Columbus, Ohio R. Thurman-Keup Argonne National Laboratory, Argonne, Illinois P. Tipton University of Rochester, Rochester, New York V. Tiwari Carnegie Mellon University, Pittsburgh, Pennsylvania S. Tkaczyk Fermi National Accelerator Laboratory, Batavia, Illinois D. Toback Texas A&M University, College Station, Texas K. Tollefson Michigan State University, East Lansing, Michigan D. Tonelli Istituto Nazionale di Fisica Nucleare, University and Scuola Normale Superiore of Pisa, M. Tönnesmann Michigan State University, East Lansing, Michigan S. Torre Istituto Nazionale di Fisica Nucleare, University and Scuola Normale Superiore of Pisa, I D. Torretta Fermi National Accelerator Laboratory, Batavia, Illinois W. Trischuk Institute of Particle Physics, University of Toronto, Toronto M5S 1A7, Canada J. Tseng Massachusetts Institute of Technology, Cambridge, Massachusetts R. Tsuchiya Waseda University, Tokyo 169, Japan S. Tsuno University of Tsukuba, Tsukuba, Ibaraki 305, Japan D. Tsybychev University of Florida, Gainesville, Florida N. Turini Istituto Nazionale di Fisica Nucleare, University and Scuola Normale Superiore of Pisa, I M. Turner University of Liverpool, Liverpool L69 7ZE, United Kingdom F. Ukegawa University of Tsukuba, Tsukuba, Ibaraki 305, Japan T. Unverhau Glasgow University, Glasgow G12 8QQ, United Kingdom S. Uozumi University of Tsukuba, Tsukuba, Ibaraki 305, Japan D. Usynin University of Pennsylvania, Philadelphia, Pennsylvania L. Vacavant Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California T. Vaiciulis University of Rochester, Rochester, New York A. Varganov University of Michigan, Ann Arbor, Michigan E. Vataga Istituto Nazionale di Fisica Nucleare, University and Scuola Normale Superiore of Pisa, S. Vejcik III Fermi National Accelerator Laboratory, Batavia, Illinois G. Velev Fermi National Accelerator Laboratory, Batavia, Illinois G. Veramendi Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California T. Vickey University of Illinois, Urbana, Illinois R. Vidal Fermi National Accelerator Laboratory, Batavia, Illinois I. Vila Instituto de Fisica de Cantabria, CSIC-University of Cantabria, Santander, Spain R. Vilar Instituto de Fisica de Cantabria, CSIC-University of Cantabria, Santander, Spain I. Volobouev Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California M. von der Mey University of California at Los Angeles, Los Angeles, California R. G. Wagner Argonne National Laboratory, Argonne, Illinois R. L. Wagner Fermi National Accelerator Laboratory, Batavia, Illinois W. Wagner Institut für Experimentelle Kernphysik, Universität Karlsruhe, Karlsruhe, Germany N. Wallace Rutgers University, Piscataway, New Jersey T. Walter Institut für Experimentelle Kernphysik, Universität Karlsruhe, Karlsruhe, Germany Z. Wan Rutgers University, Piscataway, New Jersey M.J. Wang Institute of Physics, Academia Sinica, Taipei, Taiwan 11529, Republic of China S.M. Wang University of Florida, Gainesville, Florida B. Ward Glasgow University, Glasgow G12 8QQ, United Kingdom S. Waschke Glasgow University, Glasgow G12 8QQ, United Kingdom D. Waters University College London, London WC1E 6BT, United Kingdom T. Watts Rutgers University, Piscataway, New Jersey M. Weber Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California W. Wester Fermi National Accelerator Laboratory, Batavia, Illinois

14 B. Whitehouse Tufts University, Medford, Massachusetts A.B. Wicklund Argonne National Laboratory, Argonne, Illinois E. Wicklund Fermi National Accelerator Laboratory, Batavia, Illinois T. Wilkes University of California at Davis, Davis, California H.H. Williams University of Pennsylvania, Philadelphia, Pennsylvania P. Wilson Fermi National Accelerator Laboratory, Batavia, Illinois B.L. Winer The Ohio State University, Columbus, Ohio P. Wittich University of Pennsylvania, Philadelphia, Pennsylvania S. Wolbers Fermi National Accelerator Laboratory, Batavia, Illinois M. Wolter Tufts University, Medford, Massachusetts M. Worcester University of California at Los Angeles, Los Angeles, California S. Worm Rutgers University, Piscataway, New Jersey T. Wright University of Michigan, Ann Arbor, Michigan X. Wu University of Geneva, CH-1211 Geneva 4, Switzerland F. Würthwein Massachusetts Institute of Technology, Cambridge, Massachusetts A. Wyatt University College London, London WC1E 6BT, United Kingdom A. Yagil Fermi National Accelerator Laboratory, Batavia, Illinois T. Yamashita Okayama University, Okayama , Japan K. Yamamoto Osaka City University, Osaka 588, Japan U.K. Yang Enrico Fermi Institute, University of Chicago, Chicago, Illinois W. Yao Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California G.P. Yeh Fermi National Accelerator Laboratory, Batavia, Illinois K. Yi The Johns Hopkins University, Baltimore, Maryland J. Yoh Fermi National Accelerator Laboratory, Batavia, Illinois P. Yoon University of Rochester, Rochester, New York K. Yorita Waseda University, Tokyo 169, Japan T. Yoshida Osaka City University, Osaka 588, Japan I. Yu Center for High Energy Physics: Kyungpook National University, Taegu ; Seoul National University, Seoul ; and SungKyunKwan University, Suwon ; Korea S. Yu University of Pennsylvania, Philadelphia, Pennsylvania Z. Yu Yale University, New Haven, Connecticut J.C. Yun Fermi National Accelerator Laboratory, Batavia, Illinois L. Zanello Instituto Nazionale de Fisica Nucleare, Sezione di Roma, University di Roma I, La Sapienza, A. Zanetti Istituto Nazionale di Fisica Nucleare, Universities of Trieste and Udine, Italy I. Zaw Harvard University, Cambridge, Massachusetts F. Zetti Istituto Nazionale di Fisica Nucleare, University and Scuola Normale Superiore of Pisa, I J. Zhou Rutgers University, Piscataway, New Jersey A. Zsenei University of Geneva, CH-1211 Geneva 4, Switzerland S. Zucchelli Istituto Nazionale di Fisica Nucleare, University of Bologna, I Bologna, Italy abstract We report on measurements of differential cross sections dσ/dp T for prompt charm meson production in p p collisions at s =1.96 TeVusing5.8±0.3 pb 1 of data from the CDF IIdetectorattheF ermilabt evatron.t hedata 1 in four fully reconstructed decay modes: D 0 K π +, D + D 0 π +, D + K π + π +, D + s φπ +,and their charge conjugates. The measured cross sections are compared to theoretical calculations. 14