Heavy Ion results from ATLAS and CMS

Size: px
Start display at page:

Download "Heavy Ion results from ATLAS and CMS"

Transcription

1 Heavy Ion results from ATLAS and CMS Gábor Veres (CERN) for the CMS and ATLAS Collaborations Hadron Structure 13 Conference Tatranske Matliare, Slovakia 30 th June,

2 Outline The ATLAS and CMS experiments and heavy ions Global picture of heavy ion collisions Hard probes jets quarkonia electroweak gauge bosons p+pb collisions: new surprises; correlations Summary 2

3 The ATLAS Experiment 3

4 The CMS Experiment CASTOR 2010: Pb+Pb 8.3 µb : Pb+Pb 150 µb : p+pb 31 nb -1 5 pb -1 4

5 Centrality in Pb+Pb collisions Pb+Pb collision centrality characterized by ΣE T in forward calorimeters (ATLAS: 3.2 < η < 4.9, CMS: 3 < η < 5). Also quantified using number of participants (N part ) Pb+Pb partonic luminosity expressed in terms of number of nucleonnucleon collisions (N coll ) or T AA Calculated using standard Glauber Monte Carlo. 5

6 Global picture of heavy ion collisions 6

7 Charged particle multiplicity PLB 710 (2012) 363 JHEP 08 (2011) 141 Centrality dependence: - Quite similar to RHIC results - Good agreement between experiments s dependence: - p+p, Pb+Pb follow power law 7

8 Energy released measured up to high η First result using the CMS CASTOR calorimeter CMS PAS HIN At high η, the ratio between the energy production in central and peripheral events is closer to 1 than at midrapidity 8

9 Azimuthal asymmetry: methods 9

10 Azimuthal asymmetry: ATLAS Evolution from low p T (collective motion) to high p T (quenching effects) Qualitative features are similar to RHIC results Many extensions available: fluctuations, other methods, etc. PLB 707(2012)

11 Azimuthal asymmetry: CMS PRC 87(2013)

12 Neutral pions: elliptic flow Detected through γγ coincidences Correlated with HF event plane With x14 increase in energy, no significant change from RHIC (for pions) PRL 110 (2013)

13 Ultra-central collisions Calculation by Heinz et al. CMS-PAS HIN Calculation by Luzum et al. CMS-PAS HIN v 2 v 3 v 4 v 5 v 6 v7 Unique perspective on hydrodynamic flow Hierarchy of coefficients reproduced by hydro Some tension between v 2 and v 3..7 Note, AMPT 0-0.2%: <b> = 1.6fm, RMS(b) = 0.6fm 13

14 Hard probes 14

15 Hard probes of heavy ion physics Goal: Understand the properties of QGP Problem: the lifetime of QGP is so short (O(fm/c)) such that it is not feasible to probe it with an external source. Solution: take advantage of the large cross-sections of high p T jets, γ/w/z, quarkonia Material at the LHC energy, use these hard probes produced in the collision itself. External source 15

16 Jet energy imbalance Parton energy loss is observed as a pronounced dijet energy imbalance in central PbPb collisions PRL 105 (2010) pp p p Pb Pb PbPb PRC 84 (2011)

17 Charged hadron R AA : ratio (PbPb/pp)/N coll PbPb PbPb EPJC 72 (2012) 1945 R AA : ratio (PbPb/pp)/N coll Reflects parton energy loss at high p T R CP : ratio (central/periph), normalized by N coll 17

18 γ+jet pairs: u, d quark energy loss Photon (191GeV) Jet (98 GeV) Photon tag: Identifies jet as u, d quark jet Provides initial quark direction Provides initial quark p T 18

19 γ-jet correlations PbPb PbPb Substantial change in γ-jet balance from peripheral to central collisions 19

20 γ-jet correlations x Jγ =p T jet /p T γ R Jγ = fraction of photons with jet partner >30 GeV/c PbPb Increasing p T -imbalance Jets lose ~14% of their initial energy PbPb No ϕ-decorrelation Less jet partners above threshold ~20% of photons lose their jet partner PLB 718 (2013)

21 Jet suppression angle dependence Submitted to PRL arxiv: Non-zero jet v 2 is observed for (R = 0.2) p T > 100 GeV jet quenching clearly sensitive to initial geometry out to very high p T 21

22 Fraction of b-jets among all jets b-jet fraction: similar in pp and PbPb b-jet quenching is comparable to light-jet quenching (R AA 0.5), within present systematics p+p Pb+Pb CMS PAS HIN

23 Jet fragmentation functions PbPb PbPb Measured down to low track p T (starting from 1 GeV/c). Reveals an excess at high ξ (low p T ) compared to pp CMS PAS HIN

24 Jet fragmentation functions Modified parton showers in inclusive jets by ATLAS 24

25 Dimuons: how hot is the medium? 25

26 Dimuon spectrum huge mass range 26

27 arxiv: Hidden heavy flavor thermometer 1 Onia state in a deconfined, colour charged medium: Debye screening T if λ D (T) < r 0 screening melting of the bound state yields suppressed Screening at different T for different states sequential melting Onia: thermometer for the QGP A. Mocsy Eur.Phys.J.C61,

28 Sequential Upsilon suppression 2011 data Observation of sequential suppression of Y family PRL 109 (2012) Observation of sequential suppression of quarkonium states (ordered by binding energy) 28

29 Electroweak bosons: the control experiment 29

30 Centrality independence: Z boson CMS-PAS-HIN Compare to POWHEG (NLO generator) or PYTHIA scaled to NNLO Scaling holds up within 10-20%, limit to npdf effects Precision can be improved by using the new pp data at 2.76 TeV (2013) PRL 110, (2013) 30

31 ppb collisions: 2012/13 the reference measurement (?) 31

32 Defining two-particle correlation Signal pair distribution: Background pair distribution: Event 1 same event pairs Event 2 mixed event pairs Associated hadron yield per trigger: η = η 1 -η 2 φ = φ 1 -φ 2 JHEP 09 (2010)

33 ppb: the ridge is observed again! p Pb Physical origin still unclear p+p 7 TeV PLB 718 (2013) 795 N number of offline tracks with p T >0.4 GeV/c Much bigger than in pp! JHEP 09 (2010)

34 Double ridge structure (ALICE) No ridge seen in % ppband similar to pp what remains if we subtract peripheral from central? 0-20% % - = Mostly cos(2 φ), but cos(3 φ) is also there 34

35 p Pb p+pb: more surprises arxiv: v 3 in p+pb and Pb+Pb reach similar magnitude (at the same multiplicity) dijet η distribution changes with centrality PAS CMS-HIN Average p T in p+p and p+pb quite similar (at the same multiplicity) PAS CMS-HIN

36 Conclusions The ATLAS and CMS experiments have completed 2.5 years of successful Heavy Ion program with 8 and 19 published papers Extensive measurements of hard probes (jets, EWK bosons, quarkonia) as well as global properties (multiplicities, elliptic flow, energy flow) Various properties of the created medium are studied at a quantitative level, with new tools at the LHC energies Energy loss via single jets, dijets, γ-jet pairs Jet fragmentation measurements Effects of initial geometry Heavy quark energy loss, b-jets, Quarkonium suppression, EWK bosons All challenges in data taking, triggering, reconstruction were met so far p+pb data presents new insights, surprises and challenges We are looking forward to the high luminosity runs starting in 2015 Many more results to come; we are still at the beginning!

37 Thank you! My trip to the Conference was supported by: CERN, Geneva Hungarian Scientific Research Fund (OTKA) Grant NK Grant K

Status of ALICE activities within FKPPL LIA

Status of ALICE activities within FKPPL LIA Status of ALICE activities within FKPPL LIA 1 Development of the online monitoring software for the ALICE Muon Trigger And Suppression Study for Υ S A N G - U N A H N K O N K U K U N I V E R S I T Y S

More information

Top rediscovery at ATLAS and CMS

Top rediscovery at ATLAS and CMS Top rediscovery at ATLAS and CMS on behalf of ATLAS and CMS collaborations CNRS/IN2P3 & UJF/ENSPG, LPSC, Grenoble, France E-mail: julien.donini@lpsc.in2p3.fr We describe the plans and strategies of the

More information

Calorimetry in particle physics experiments

Calorimetry in particle physics experiments Calorimetry in particle physics experiments Unit n. 8 Calibration techniques Roberta Arcidiacono Lecture overview Introduction Hardware Calibration Test Beam Calibration In-situ Calibration (EM calorimeters)

More information

Event-by-event anisotropies in hydro

Event-by-event anisotropies in hydro Event-by-event anisotropies in hydro Máté Csanád in collaboration with András Szabó, Sándor Lökös, Attila Bagoly Eötvös University, Budapest Balaton workshop, Tihany, 14 July 2015 July 14, 2015 Máté Csanád,

More information

CMS Physics Analysis Summary

CMS Physics Analysis Summary Available on the CERN CDS information server CMS PAS RK-10-002 CMS Physics Analysis Summary Contact: cms-pog-conveners-tracking@cern.ch 2010/07/20 Measurement of racking Efficiency he CMS Collaboration

More information

How To Find The Higgs Boson

How To Find The Higgs Boson Dezső Horváth: Search for Higgs bosons Balaton Summer School, Balatongyörök, 07.07.2009 p. 1/25 Search for Higgs bosons Balaton Summer School, Balatongyörök, 07.07.2009 Dezső Horváth MTA KFKI Research

More information

UN PICCOLO BIG BANG IN LABORATORIO: L'ESPERIMENTO ALICE AD LHC

UN PICCOLO BIG BANG IN LABORATORIO: L'ESPERIMENTO ALICE AD LHC UN PICCOLO BIG BANG IN LABORATORIO: L'ESPERIMENTO ALICE AD LHC Parte 1: Carlos A. Salgado Universidade de Santiago de Compostela csalgado@usc.es http://cern.ch/csalgado LHC physics program Fundamental

More information

Measurement of Neutralino Mass Differences with CMS in Dilepton Final States at the Benchmark Point LM9

Measurement of Neutralino Mass Differences with CMS in Dilepton Final States at the Benchmark Point LM9 Measurement of Neutralino Mass Differences with CMS in Dilepton Final States at the Benchmark Point LM9, Katja Klein, Lutz Feld, Niklas Mohr 1. Physikalisches Institut B RWTH Aachen Introduction Fast discovery

More information

Nara Women s University, Nara, Japan B.A. Honors in physics 2002 March 31 Thesis: Particle Production in Relativistic Heavy Ion Collisions

Nara Women s University, Nara, Japan B.A. Honors in physics 2002 March 31 Thesis: Particle Production in Relativistic Heavy Ion Collisions Maya SHIMOMURA Brookhaven National Laboratory, Upton, NY, 11973, U.S.A. PROFILE I am an experimentalist working for high-energy heavy ion at Iowa State University as a postdoctoral research associate.

More information

ALICE-USA. DRAFT - Research Management Plan

ALICE-USA. DRAFT - Research Management Plan ALICE-USA DRAFT - Research Management Plan December 9, 2006 Executive Overview The ALICE-USA Collaboration proposes to initiate a research program in relativistic heavy ion physics with the ALICE experiment

More information

Search for Dark Matter at the LHC

Search for Dark Matter at the LHC Search for Dark Matter at the LHC Steven Lowette Vrije Universiteit Brussel - IIHE 19 November 2014 3rd CosPa Meeting Université de Liège Content Introduction Generic DM searches at the LHC Explicit DM

More information

Jet Reconstruction in CMS using Charged Tracks only

Jet Reconstruction in CMS using Charged Tracks only Jet Reconstruction in CMS using Charged Tracks only Andreas Hinzmann for the CMS Collaboration JET2010 12 Aug 2010 Jet Reconstruction in CMS Calorimeter Jets clustered from calorimeter towers independent

More information

Measurement of the Mass of the Top Quark in the l+ Jets Channel Using the Matrix Element Method

Measurement of the Mass of the Top Quark in the l+ Jets Channel Using the Matrix Element Method Measurement of the Mass of the Top Quark in the l+ Jets Channel Using the Matrix Element Method Carlos Garcia University of Rochester For the DØ Collaboration APS Meeting 2007 Outline Introduction Top

More information

ATLAS NOTE ATLAS-CONF-2010-063. July 21, 2010. Search for top pair candidate events in ATLAS at s = 7 TeV. The ATLAS Collaboration.

ATLAS NOTE ATLAS-CONF-2010-063. July 21, 2010. Search for top pair candidate events in ATLAS at s = 7 TeV. The ATLAS Collaboration. ATLAS NOTE ATLAS-CONF-2010-063 July 21, 2010 Search for top pair candidate events in ATLAS at s = 7 TeV The ATLAS Collaboration Abstract A search is performed for events consistent with top quark pair

More information

t th signal: theory status

t th signal: theory status t th signal: theory status M.V. Garzelli MTA - DE Particle Physics Research Group, Univ. Debrecen, Hungary e-mail: garzelli@to.infn.it LHC HXSWG Workshop CERN, June 12-13th, 2014 t th production at LHC

More information

Jets energy calibration in ATLAS

Jets energy calibration in ATLAS Jets energy calibration in ATLAS V.Giangiobbe Università di Pisa INFN sezione di Pisa Supported by the ARTEMIS Research Training Network Workshop sui Monte Carlo, la Fisica e le Simulazioni a LHC V.Giangiobbe

More information

Theoretical Particle Physics FYTN04: Oral Exam Questions, version ht15

Theoretical Particle Physics FYTN04: Oral Exam Questions, version ht15 Theoretical Particle Physics FYTN04: Oral Exam Questions, version ht15 Examples of The questions are roughly ordered by chapter but are often connected across the different chapters. Ordering is as in

More information

Cross section, Flux, Luminosity, Scattering Rates

Cross section, Flux, Luminosity, Scattering Rates Cross section, Flux, Luminosity, Scattering Rates Table of Contents Paul Avery (Andrey Korytov) Sep. 9, 013 1 Introduction... 1 Cross section, flux and scattering... 1 3 Scattering length λ and λ ρ...

More information

arxiv:1507.00499v1 [nucl-th] 2 Jul 2015

arxiv:1507.00499v1 [nucl-th] 2 Jul 2015 Flow anisotropies due to momentum deposition from hard partons Boris Tomášik a,b, Martin Schulc b,c arxiv:1507.00499v1 [nucl-th] 2 Jul 2015 a Univerzita Mateja Bela, Banská Bystrica, Slovakia b FNSPE,

More information

Risultati recenti dell'esperimento CMS ad LHC e prospettive per il run a 14 TeV

Risultati recenti dell'esperimento CMS ad LHC e prospettive per il run a 14 TeV Risultati recenti dell'esperimento CMS ad LHC e prospettive per il run a 14 TeV Luca Lista INFN Napoli 1 78 reconstructed vertices CMS experiment CMS recorded 5fb-1 at 7 TeV and 20 fb-1 at 8 TeV 2 Electroweak

More information

Progress in understanding quarkonium polarization measurements

Progress in understanding quarkonium polarization measurements 1 Progress in understanding quarkonium polarization measurements 1. Why it is essential that we approach the measurement of polarization as a multidimensional problem: we must not average out information!.

More information

Implications of CMS searches for the Constrained MSSM A Bayesian approach

Implications of CMS searches for the Constrained MSSM A Bayesian approach Implications of CMS searches for the Constrained MSSM A Bayesian approach Małgorzata Kazana, Yue-Lin Sming Tsai On behalf of the BayesFITS group National Centre for Nuclear Research Warsaw, Poland BayesFITS,

More information

Jet quenching in heavy-ion collisions at LHC with CMS detector. Yetkin Yilmaz

Jet quenching in heavy-ion collisions at LHC with CMS detector. Yetkin Yilmaz Jet quenching in heavy-ion collisions at LHC with CMS detector by Yetkin Yilmaz Submitted to the Department of Physics in partial fulfillment of the requirements for the degree of Doctor of Philosophy

More information

Top-Quark Studies at CMS

Top-Quark Studies at CMS Top-Quark Studies at CMS Tim Christiansen (CERN) on behalf of the CMS Collaboration ICHEP 2010, Paris 35th International Conference on High-Energy Physics tt 2 km 22 28 July 2010 Single-top 4 km New Physics

More information

FCC 1309180800 JGU WBS_v0034.xlsm

FCC 1309180800 JGU WBS_v0034.xlsm 1 Accelerators 1.1 Hadron injectors 1.1.1 Overall design parameters 1.1.1.1 Performance and gap of existing injector chain 1.1.1.2 Performance and gap of existing injector chain 1.1.1.3 Baseline parameters

More information

Open access to data and analysis tools from the CMS experiment at the LHC

Open access to data and analysis tools from the CMS experiment at the LHC Open access to data and analysis tools from the CMS experiment at the LHC Thomas McCauley (for the CMS Collaboration and QuarkNet) University of Notre Dame, USA thomas.mccauley@cern.ch! 5 Feb 2015 Outline

More information

PHYSICS WITH LHC EARLY DATA

PHYSICS WITH LHC EARLY DATA PHYSICS WITH LHC EARLY DATA ONE OF THE LAST PROPHETIC TALKS ON THIS SUBJECT HOPEFULLY We may have some two month of the Machine operation in 2008 LONG HISTORY... I will extensively use: Fabiola GIANOTTI

More information

Evan Warren Sangaline. A dissertation submitted in partial satisfaction of the requirements for the degree of Doctor of Philosophy. Physics.

Evan Warren Sangaline. A dissertation submitted in partial satisfaction of the requirements for the degree of Doctor of Philosophy. Physics. Ups and Downs with a Bit of Strange: A STAR Analysis of π/k/p Spectra at High p T in Au+Au collisions at s NN = 7.7, 11.5, 19.6, 27.0, 39.0, and 62.4 GeV and Its Physics Implications by Evan Warren Sangaline

More information

Physik des Higgs Bosons. Higgs decays V( ) Re( ) Im( ) Figures and calculations from A. Djouadi, Phys.Rept. 457 (2008) 1-216

Physik des Higgs Bosons. Higgs decays V( ) Re( ) Im( ) Figures and calculations from A. Djouadi, Phys.Rept. 457 (2008) 1-216 : Higgs decays V( ) Re( ) Im( ) Figures and calculations from A. Djouadi, Phys.Rept. 457 (2008) 1-216 1 Reminder 10.6.2014 Higgs couplings: 2 Reminder 10.6.2014 Higgs BF as a function of mh Higgs total

More information

How To Teach Physics At The Lhc

How To Teach Physics At The Lhc LHC discoveries and Particle Physics Concepts for Education Farid Ould- Saada, University of Oslo On behalf of IPPOG EPS- HEP, Vienna, 25.07.2015 A successful program LHC data are successfully deployed

More information

arxiv:nucl-ex/0507023v2 18 Jul 2005

arxiv:nucl-ex/0507023v2 18 Jul 2005 Diffraction Dissociation - 50 Years later Sebastian N. White Brookhaven National Laboratory, Upton, N.Y. 11973, USA arxiv:nucl-ex/0507023v2 18 Jul 2005 Abstract. The field of Diffraction Dissociation,

More information

arxiv:hep-ph/0310021v2 4 Oct 2003

arxiv:hep-ph/0310021v2 4 Oct 2003 Physics in Collision - Zeuthen, Germany, June 6-8, 003 arxiv:hep-ph/0300v 4 Oct 003 SEARCHES FOR NEW PARTICLES AT THE ENERGY FRONTIER AT THE TEVATRON Patrice VERDIER LAL, Université Paris-Sud, 9898 Orsay

More information

WIMP dark matter and the isotropic radio signal Roberto A. Lineros R. Instituto de Física Corpuscular - CSIC/U. Valencia @Roberto_Lineros Outline Introduction Cosmic ray propagation Synchrotron emission

More information

Single-Top Production at the Tevatron and the LHC: Results and Prospects

Single-Top Production at the Tevatron and the LHC: Results and Prospects Single-Top Production at the Tevatron and the LHC: Results and Prospects Wolfgang Wagner Bergische Universität Wuppertal DESY Zeuthen, June 16, 2011 Content: 1) Introduction / History 2) Experimental Status

More information

Data analysis in Par,cle Physics

Data analysis in Par,cle Physics Data analysis in Par,cle Physics From data taking to discovery Tuesday, 13 August 2013 Lukasz Kreczko - Bristol IT MegaMeet 1 $ whoami Lukasz (Luke) Kreczko Par,cle Physicist Graduated in Physics from

More information

Science+ Large Hadron Cancer & Frank Wurthwein Virus Hunting

Science+ Large Hadron Cancer & Frank Wurthwein Virus Hunting Shared Computing Driving Discovery: From the Large Hadron Collider to Virus Hunting Frank Würthwein Professor of Physics University of California San Diego February 14th, 2015 The Science of the LHC The

More information

Theory versus Experiment. Prof. Jorgen D Hondt Vrije Universiteit Brussel jodhondt@vub.ac.be

Theory versus Experiment. Prof. Jorgen D Hondt Vrije Universiteit Brussel jodhondt@vub.ac.be Theory versus Experiment Prof. Jorgen D Hondt Vrije Universiteit Brussel jodhondt@vub.ac.be Theory versus Experiment Pag. 2 Dangerous cocktail!!! Pag. 3 The basics in these lectures Part1 : Theory meets

More information

The effects of angular momentum conservation in relativistic heavy ion collisions

The effects of angular momentum conservation in relativistic heavy ion collisions conservation in relativistic heavy ion collisions Università di Firenze and INFN Sezione di Firenze, Firenze, Italy E-mail: author@email F. Piccinini INFN Sezione di Pavia, Pavia, Italy E-mail: piccinini@pv.infn.it

More information

Production of Hadrons Correlated to Jets in High Energy Heavy-Ion Collisions. Charles Chiu

Production of Hadrons Correlated to Jets in High Energy Heavy-Ion Collisions. Charles Chiu Production of Hadrons Correlated to Jets in High Energy Heavy-Ion Collisions Charles Chiu Center for Particles and Fields University of Texas at Austin ITP-Seminar, Chinese Academy of Science, Beijing,

More information

arxiv:1508.07811v1 [hep-ph] 31 Aug 2015

arxiv:1508.07811v1 [hep-ph] 31 Aug 2015 DESY 5-47 RAL-P-05-007 reating jet correlations in high pile-up at hadron colliders arxiv:508.078v [hep-ph] 3 Aug 05 F. Hautmann,, H. Jung, 3, 4 and H. Van Haevermaet 4 Rutherford Appleton Laboratory &

More information

STAR Heavy-Ion Program Runs:12-14

STAR Heavy-Ion Program Runs:12-14 STAR Heavy-Ion Program Runs:12-14 (for STAR Collaboration) Outline: STAR Physics program for heavy-ions Run 12 heavy-ion data taking - U+U 193 GeV and Cu+Au 200 GeV STAR proposals: Run13-14 BES Phase-II

More information

variables to investigate Monte Carlo methods of t t production

variables to investigate Monte Carlo methods of t t production Using the M 2 and variables to investigate Monte Carlo methods of t t production Caitlin Jones September 8, 25 Abstract In this project the behaviour of Monte Carlo simulations for the event t t! ` `+b

More information

Highlights of Recent CMS Results. Dmytro Kovalskyi (UCSB)

Highlights of Recent CMS Results. Dmytro Kovalskyi (UCSB) Highlights of Recent CMS Results Dmytro Kovalskyi (UCSB) Introduction Number of CMS publication is over 0 already It is very hard to review all the recent results in one talk This talk concentrates on

More information

2036-1. International Workshop: Quantum Chromodynamics from Colliders to Super-High Energy Cosmic Rays. 25-29 May 2009

2036-1. International Workshop: Quantum Chromodynamics from Colliders to Super-High Energy Cosmic Rays. 25-29 May 2009 2036-1 International Workshop: Quantum Chromodynamics from Colliders to Super-High Energy Cosmic Rays 25-29 May 2009 The LHC & cosmic rays physics at the highest David d'enterria CERN - European Laboratory

More information

The TOTEM experiment at the LHC: results and perspective

The TOTEM experiment at the LHC: results and perspective The TOTEM experiment at the LHC: results and perspective Edoardo Bossini Università degli studi di Siena and INFN-Pisa (on behalf of the TOTEM collaboration) Trieste, 24 Settembre 2013 OUTLINE: Detector

More information

Precise measurements of the proton structure towards the new physics discoveries at the LHC

Precise measurements of the proton structure towards the new physics discoveries at the LHC June 2015 Precise measurements of the proton structure towards the new physics discoveries at the LHC Voica Radescu Physikalisches Institut Heidelberg Early ideas Ideas for detecting quarks were formulated

More information

H & II in Inclusive Jet Production

H & II in Inclusive Jet Production on behalf of the Collaboration Universität Hamburg, Institut für Experimentalphysik, Luruper Chaussee 49, 76 Hamburg, Germany E-mail: monica.turcato@desy.de A summary of the most recent results by the

More information

Electromagnetic splitting of directed flow in heavy ion collisions

Electromagnetic splitting of directed flow in heavy ion collisions Electromagnetic splitting of directed flow in heavy ion collisions Andrzej Rybicki H. Niewodniczański Institute of Nuclear Physics Polish Academy of Sciences 1) Motivation 2) Methodology 3) Splitting of

More information

The Compact Muon Solenoid Experiment. CMS Note. Mailing address: CMS CERN, CH-1211 GENEVA 23, Switzerland. D. J. Mangeol, U.

The Compact Muon Solenoid Experiment. CMS Note. Mailing address: CMS CERN, CH-1211 GENEVA 23, Switzerland. D. J. Mangeol, U. Available on CMS information server CMS NOTE 6/96 The Compact Muon Solenoid Experiment CMS Note Mailing address: CMS CERN, CH11 GENEVA 3, Switzerland July, 6 Search for χ decays to ττ and SUSY mass spectrum

More information

Parton showering effects in central heavy-boson hadroproduction

Parton showering effects in central heavy-boson hadroproduction Parton showering effects in central heavy-boson hadroproduction DOI: will be assigned M. Deak, A. Grebenyuk 2, F. Hautmann 3, H. Jung 2,4 and K. Kutak 2 IFT, University of Madrid 2 Deutsches Elektronen

More information

Selected Results on Diffraction at HERA

Selected Results on Diffraction at HERA Selected Results on Diffraction at HERA Grzegorz Gach Various Faces of QCD May 014 Grzegorz Gach Selected Results on Diffraction at HERA 1 HERA DESY, Hamburg 199-007 e/e + - p 7.5 GeV 80 GeV 90 GeV Ldt

More information

Bounding the Higgs width at the LHC

Bounding the Higgs width at the LHC Bounding the Higgs width at the LHC Higgs XSWG workshop, June 2014 John Campbell, Fermilab with K. Ellis, C. Williams 1107.5569, 1311.3589, 1312.1628 Reminder of the method This is the essence of the original

More information

Recent developments in Electromagnetic Hadron Form Factors

Recent developments in Electromagnetic Hadron Form Factors Recent developments in Electromagnetic Hadron Form Factors (JOH7RPDVL*XVWDIVVRQ '$31,$63K16DFOD\ :KDW are Form Factors? :K\ to measure? +RZ to measure? :KDWLVQHZ" Consequences, Conclusions 6SRNHSHUVR QV

More information

HIGH-ENERGY COLLIDER PARAMETERS: e + e Colliders (I)

HIGH-ENERGY COLLIDER PARAMETERS: e + e Colliders (I) 28. High-energy collider parameters 1 HIGH-ENERGY COLLIDER PARAMETERS: e + e Colliders (I) Updated in early 2012 with numbers received from representatives of the colliders (contact J. Beringer, LBNL).

More information

A SUSY SO(10) GUT with 2 Intermediate Scales

A SUSY SO(10) GUT with 2 Intermediate Scales A SUSY SO(10) GUT with 2 Intermediate Scales Manuel Drees Bonn University & Bethe Center for Theoretical Physics SUSY SO(10) p. 1/25 Contents 1 Motivation: SO(10), intermediate scales SUSY SO(10) p. 2/25

More information

Real Time Tracking with ATLAS Silicon Detectors and its Applications to Beauty Hadron Physics

Real Time Tracking with ATLAS Silicon Detectors and its Applications to Beauty Hadron Physics Real Time Tracking with ATLAS Silicon Detectors and its Applications to Beauty Hadron Physics Carlo Schiavi Dottorato in Fisica - XVII Ciclo Outline The ATLAS Experiment The SiTrack Algorithm Application

More information

A MONTE CARLO SIMULATION FOR THE ELASTIC ENERGY LOSS OF HIGH-ENERGY PARTONS IN A STRONGLY INTERACTING MEDIUM BY JUSSI AUVINEN

A MONTE CARLO SIMULATION FOR THE ELASTIC ENERGY LOSS OF HIGH-ENERGY PARTONS IN A STRONGLY INTERACTING MEDIUM BY JUSSI AUVINEN DEPARTMENT OF PHYSICS UNIVERSITY OF JYVÄSKYLÄ RESEARCH REPORT No. 9/2012 A MONTE CARLO SIMULATION FOR THE ELASTIC ENERGY LOSS OF HIGH-ENERGY PARTONS IN A STRONGLY INTERACTING MEDIUM BY JUSSI AUVINEN Academic

More information

Selected Topics in Elementary Particle Physics ( Haupt-Seminar )

Selected Topics in Elementary Particle Physics ( Haupt-Seminar ) Selected Topics in Elementary Particle Physics ( Haupt-Seminar ) Paola Avella, Veronika Chobanova, Luigi Li Gioi, Christian Kiesling, Hans-Günther Moser, Martin Ritter, Pit Vanhoefer Time: Do, 12 ct -14

More information

PrHEP JHW2002. Experiments on high energy reactions in the diffractive regime at LHC. 1. Introduction. Twenty-sixth Johns Hopkins Workshop

PrHEP JHW2002. Experiments on high energy reactions in the diffractive regime at LHC. 1. Introduction. Twenty-sixth Johns Hopkins Workshop PROCEEDINGS Experiments on high energy reactions in the diffractive regime at LHC Helsinki Institute for Physics, c/o CERN, Route de Meyrin, CH-1211 Geneva 23, Switzerland E-mail: Stefan.Tapprogge@cern.ch

More information

[12] W. Fischer. Run overview of the relativistic heavy ion collider. http://www.agsrhichome.bnl.gov/rhic/runs/.

[12] W. Fischer. Run overview of the relativistic heavy ion collider. http://www.agsrhichome.bnl.gov/rhic/runs/. Bibliography [1] CTEQ Coll. Handbook on perturbative QCD. Rev. Mod. Phys., 67:157 248, 1995. [2] J. Bjorken and S. Drell. Relativistic Quantum Mechanics. McGraw-Hill, 1964. [3] J. Cleymans, R. Gavai, and

More information

1 Experiments (Brahms, PHENIX, and STAR)

1 Experiments (Brahms, PHENIX, and STAR) 1 Experiments (Brahms, PHENIX, and STAR) This section describes the three experiments capable of making spin measurements. 1.1 PHENIX RHIC has made great strides towards providing high luminosity beams

More information

Particle Physics. Bryan Webber University of Cambridge. IMPRS, Munich. 19-23 November 2007

Particle Physics. Bryan Webber University of Cambridge. IMPRS, Munich. 19-23 November 2007 Monte Carlo Methods in Particle Physics University of Cambridge IMPRS, Munich 19-23 November 2007 See also ESW: QCD and Collider Physics, C.U.P. 1996 http://www.hep.phy.cam.ac.uk/theory/webber/qcdupdates.html

More information

Study of the B D* ℓ ν with the Partial Reconstruction Technique

Study of the B D* ℓ ν with the Partial Reconstruction Technique Study of the B D* ℓ ν with the Partial Reconstruction Technique + University of Ferrara / INFN Ferrara Dottorato di Ricerca in Fisica Ciclo XVII Mirco Andreotti 4 March 25 Measurement of B(B D*ℓν) from

More information

FTK the online Fast Tracker for the ATLAS upgrade

FTK the online Fast Tracker for the ATLAS upgrade FTK the online Fast Tracker for the ATLAS upgrade Kostas Kordas Aristotle University of Thessaloniki Annual EESFYE mtg, University of the Aegean, Chios, 25-29 April 2013 Overview ATLAS Trigger and DAQ

More information

POSSIBL-E EXPERIMENTS ON THE 200-GeV ACCELERATOR. A. D. Krisch University of Michigan. R. Serber Columbia University.

POSSIBL-E EXPERIMENTS ON THE 200-GeV ACCELERATOR. A. D. Krisch University of Michigan. R. Serber Columbia University. FN-68 POSSIBL-E EXPERIMENTS ON THE 200-GeV ACCELERATOR A. D. Krisch University of Michigan R. Serber Columbia University August 23, 1967 We will describe a number of experiments that might be dcne on.,he

More information

IMPROVEMENT OF JET ENERGY RESOLUTION FOR SEGMENTED HCAL USING LAYER WEIGHTING TECHNIQUE

IMPROVEMENT OF JET ENERGY RESOLUTION FOR SEGMENTED HCAL USING LAYER WEIGHTING TECHNIQUE IMPROVEMEN OF JE ENERGY RESOLUION FOR SEGMENED HCAL USING LAYER WEIGHING ECHNIQUE V. Andreev 1, I. Golutvin 2, A. Nikitenko 3,V.Palichik 2 1 Lebedev Physical Institute, Moscow, Russia 2 Joint Institute

More information

High Energy Physics. Lecture 4 More kinematics and a picture show of particle collisions

High Energy Physics. Lecture 4 More kinematics and a picture show of particle collisions High Energy Physics Lecture 4 More kinematics and a picture show of particle collisions 1 Recall from the previous lecture: the momentum of the scattered Particle in an elastic collision is given by p

More information

Research Management Plan (RMP) for the. STAR Heavy Flavor Tracker (HFT)

Research Management Plan (RMP) for the. STAR Heavy Flavor Tracker (HFT) Research Management Plan (RMP) for the STAR Heavy Flavor Tracker (HFT) Version 4 March 31, 2009 1. Introduction This document describes the plans of a group of institutions within the STAR collaboration

More information

arxiv:1006.5339v1 [hep-ph] 28 Jun 2010

arxiv:1006.5339v1 [hep-ph] 28 Jun 2010 FR-PHENO-2010-021 arxiv:1006.5339v1 [hep-ph] 28 Jun 2010 NLO QCD corrections to 4 b-quark production University of Illinois at Urbana-Champaign, Urbana IL, 61801 USA E-mail: ngreiner@illinois.edu Alberto

More information

Electroweak effects in Higgs boson production

Electroweak effects in Higgs boson production Electroweak effects in Higgs boson production Frank Petriello University of Wisconsin, Madison w/c. Anastasiou, R. Boughezal 0811.3458 w/ W. Y. Keung, WIP Outline Brief review of experiment, theory for

More information

The Silicon Strip Detector (SSD) for the ALICE experiment at LHC: construction, characterization and charged particles multiplicity studies.

The Silicon Strip Detector (SSD) for the ALICE experiment at LHC: construction, characterization and charged particles multiplicity studies. UNIVERSITÀ DEGLI STUDI DI TRIESTE Sede Amministrativa del Dottorato di Ricerca FACOLTÀ DI SCIENZE MATEMATICHE, FISICHE, NATURALI XXI Ciclo del Dottorato di Ricerca in FISICA The Silicon Strip Detector

More information

Dielectron production in proton-proton collisions with ALICE

Dielectron production in proton-proton collisions with ALICE Dielectron production in proton-proton collisions with ALICE Doctoral Thesis by Markus Konrad Köhler July 014 Institut für Kernphysik Prof. Dr. Peter Braun-Munzinger Prof. Dr. Jochen Wambach Dissertation

More information

PoS(LHCPP2013)033. Rare B meson decays at LHC. Francesco Dettori Nikhef and Vrij Universiteit, Amsterdam E-mail: fdettori@nikhef.nl.

PoS(LHCPP2013)033. Rare B meson decays at LHC. Francesco Dettori Nikhef and Vrij Universiteit, Amsterdam E-mail: fdettori@nikhef.nl. Nikhef and Vrij Universiteit, Amsterdam E-mail: fdettori@nikhef.nl Paolo Iengo INFN Napoli E-mail: paolo.iengo@cern.ch Luca Martini INFN Pisa E-mail: Luca.Martini@cern.ch Rare decays of B mesons are fundamental

More information

Information about the T9 beam line and experimental facilities

Information about the T9 beam line and experimental facilities Information about the T9 beam line and experimental facilities The incoming proton beam from the PS accelerator impinges on the North target and thus produces the particles for the T9 beam line. The collisions

More information

Axion/Saxion Cosmology Revisited

Axion/Saxion Cosmology Revisited Axion/Saxion Cosmology Revisited Masahiro Yamaguchi (Tohoku University) Based on Nakamura, Okumura, MY, PRD77 ( 08) and Work in Progress 1. Introduction Fine Tuning Problems of Particle Physics Smallness

More information

Beyond High Performance Computing: What Matters to CERN

Beyond High Performance Computing: What Matters to CERN Beyond High Performance Computing: What Matters to CERN Pierre VANDE VYVRE for the ALICE Collaboration ALICE Data Acquisition Project Leader CERN, Geneva, Switzerland 2 CERN CERN is the world's largest

More information

THE TOP QUARK Updated September 2013 by T.M. Liss (Univ. Illinois), F. Maltoni (Univ. Catholique de Louvain), and A. Quadt (Univ. Göttingen).

THE TOP QUARK Updated September 2013 by T.M. Liss (Univ. Illinois), F. Maltoni (Univ. Catholique de Louvain), and A. Quadt (Univ. Göttingen). 1 THE TOP QUARK Updated September 2013 by T.M. Liss (Univ. Illinois), F. Maltoni (Univ. Catholique de Louvain), and A. Quadt (Univ. Göttingen). A. Introduction The top quark is the Q = 2/3, T 3 = +1/2

More information

The accurate calibration of all detectors is crucial for the subsequent data

The accurate calibration of all detectors is crucial for the subsequent data Chapter 4 Calibration The accurate calibration of all detectors is crucial for the subsequent data analysis. The stability of the gain and offset for energy and time calibration of all detectors involved

More information

Rare decays in quark flavour physics

Rare decays in quark flavour physics Available online at www.sciencedirect.com Nuclear and Particle Physics Proceedings 73 75 (6) 5 59 www.elsevier.com/locate/nppp Rare decays in quark flavour physics Johannes Albrecht On behalf of the collaboration

More information

Combining fixed order QCD calculation with the parton shower Monte Carlo new PV prescription for IR singularities

Combining fixed order QCD calculation with the parton shower Monte Carlo new PV prescription for IR singularities Combining fixed order QCD calculation with the parton shower Monte Carlo new PV prescription for IR singularities O. Gituliar, S. Jadach, A. Kusina, W. Płaczek, S. Sapeta, A. Siódmok, M. Skrzypek Partly

More information

Measurement of the Beauty Cross Section using the Semileptonic Decay into Electrons at HERA

Measurement of the Beauty Cross Section using the Semileptonic Decay into Electrons at HERA Measurement of the Beauty Cross Section using the Semileptonic Decay into Electrons at HERA Dissertation zur Erlangung des Doktorgrades des Fachbereichs Physik der Universität Hamburg vorgelegt von Bengt

More information

JOURNAL OF CENTRAL EUROPEAN GREEN INNOVATION HU ISSN 2064-3004 Available online at http://greeneconomy.karolyrobert.hu/

JOURNAL OF CENTRAL EUROPEAN GREEN INNOVATION HU ISSN 2064-3004 Available online at http://greeneconomy.karolyrobert.hu/ Journal of Central European Green Innovation 2 (4) 189-194 (2014) JOURNAL OF CENTRAL EUROPEAN GREEN INNOVATION HU ISSN 2064-3004 Available online at http://greeneconomy.karolyrobert.hu/ WORLD CLASS WORKSHOP

More information

Validation of the MadAnalysis 5 implementation of ATLAS-SUSY-13-05

Validation of the MadAnalysis 5 implementation of ATLAS-SUSY-13-05 Validation of the MadAnalysis 5 implementation of ATLAS-SUSY-3-5 Guillaume Chalons (LPSC Grenoble) email: chalons@lpsc.in2p3.fr October 27, 24 Abstract In this note we summarise our validation of the ATLAS

More information

Single Top Production at the Tevatron

Single Top Production at the Tevatron Single Top Production at the Tevatron Daniel Wicke (Bergische Universität Wuppertal) Introduction Outline DØ Cross Section CDF Results DØ V tb Conclusions Revision : 1.7 DESY-Zeuthen, 21-Feb-2007 1 Introduction

More information

D. Rainwater and D. Zeppenfeld. Department of Physics, University of Wisconsin, Madison, WI 53706. K. Hagiwara

D. Rainwater and D. Zeppenfeld. Department of Physics, University of Wisconsin, Madison, WI 53706. K. Hagiwara University of Wisconsin - Madison MADPH-98-1057 KEK-TH-589 August 1998 Searching for H ττ in weak boson fusion at the LHC D. Rainwater and D. Zeppenfeld Department of Physics, University of Wisconsin,

More information

Perfect Fluidity in Cold Atomic Gases?

Perfect Fluidity in Cold Atomic Gases? Perfect Fluidity in Cold Atomic Gases? Thomas Schaefer North Carolina State University 1 Hydrodynamics Long-wavelength, low-frequency dynamics of conserved or spontaneoulsy broken symmetry variables τ

More information

Molecular Spectroscopy

Molecular Spectroscopy Molecular Spectroscopy UV-Vis Spectroscopy Absorption Characteristics of Some Common Chromophores UV-Vis Spectroscopy Absorption Characteristics of Aromatic Compounds UV-Vis Spectroscopy Effect of extended

More information

arxiv:hep-ph/9812492v1 24 Dec 1998

arxiv:hep-ph/9812492v1 24 Dec 1998 MPI-PhT/96-14(extended version) July 1996 A Note on QCD Corrections to A b FB using Thrust to arxiv:hep-ph/9812492v1 24 Dec 1998 determine the b-quark Direction Bodo Lampe Max Planck Institut für Physik

More information

ATLAS Test Beam Analysis in Stockholm: An Overview

ATLAS Test Beam Analysis in Stockholm: An Overview ATLAS Test Beam Analysis in Stockholm: An Overview Elin Bergeås, Stockholm University Stand-alone test beam 2003 and before - test beam targeted at TileCal modules only Combined test beam 2004 - test beam

More information

PoS(Kruger 2010)013. Setting of the ATLAS Jet Energy Scale. Michele Petteni Simon Fraser University E-mail: mpetteni@sfu.ca

PoS(Kruger 2010)013. Setting of the ATLAS Jet Energy Scale. Michele Petteni Simon Fraser University E-mail: mpetteni@sfu.ca Setting of the ALAS Energy Scale Simon Fraser University E-mail: mpetteni@sfu.ca he setting of the energy scale and its uncertainty in the ALAS detector is presented. After a brief introduction of the

More information

Running in 2011 - Luminosity. Mike Lamont Verena Kain

Running in 2011 - Luminosity. Mike Lamont Verena Kain Running in 2011 - Luminosity Mike Lamont Verena Kain Presentations Many thanks to all the speakers! Experiments expectations Massi Ferro-Luzzi Pushing the limits: beam Elias Métral Pushing the limits:

More information

arxiv:hep-lat/9210041v1 30 Oct 1992

arxiv:hep-lat/9210041v1 30 Oct 1992 1 The Interface Tension in Quenched QCD at the Critical Temperature B. Grossmann a, M.. aursen a, T. Trappenberg a b and U. J. Wiese c a HRZ, c/o Kfa Juelich, P.O. Box 1913, D-5170 Jülich, Germany arxiv:hep-lat/9210041v1

More information

Concepts in Theoretical Physics

Concepts in Theoretical Physics Concepts in Theoretical Physics Lecture 6: Particle Physics David Tong e 2 The Structure of Things 4πc 1 137 e d ν u Four fundamental particles Repeated twice! va, 9608085, 9902033 Four fundamental forces

More information

This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and

This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the authors institution

More information

The Experimental H.E.P. Group of the. Outline

The Experimental H.E.P. Group of the. Outline The Experimental H.E.P. Group of the Universidad Autónoma de Madrid a http://hepexp.ft.uam.es Luis Labarga Departamento de Física Teórica Universidad Autónoma de Madrid Dates and People Outline The ZEUS

More information

Simulation of Neutron Backgrounds from the ILC Extraction Line Beam Dump. Siva Darbha. Office of Science, SULI Program. University of Toronto

Simulation of Neutron Backgrounds from the ILC Extraction Line Beam Dump. Siva Darbha. Office of Science, SULI Program. University of Toronto SLAC-TN-07-013 August 2007 Simulation of Neutron Backgrounds from the ILC Extraction Line Beam Dump Siva Darbha Office of Science, SULI Program University of Toronto Stanford Linear Accelerator Center

More information

Vector-like quarks t and partners

Vector-like quarks t and partners Vector-like quarks t and partners Luca Panizzi University of Southampton, UK Outline Motivations and Current Status 2 Couplings and constraints 3 Signatures at LHC Outline Motivations and Current Status

More information

CERN-THESIS-2011-356

CERN-THESIS-2011-356 CERN-THESIS-2011-356 L0/L1 trigger generation by the ALICE PHOS detector Lijiao Liu Dissertation for the degree philosophiae doctor (PhD) at the University of Bergen October 2011 Contact: Lijiao Liu Institute

More information

How To Understand The Physics Of The Proton

How To Understand The Physics Of The Proton DEVELOPMENT OF A VIRTUALIZED COMPUTING ENVIRONMENT FOR LHC ANALYSES ON STANDARD BATCH SYSTEMS AND MEASUREMENT OF THE INCLUSIVE JET CROSS-SECTION WITH THE CMS EXPERIMENT AT 7 TEV Zur Erlangung des akademisches

More information

A new inclusive secondary vertex algorithm for b-jet tagging in ATLAS

A new inclusive secondary vertex algorithm for b-jet tagging in ATLAS Home Search Collections Journals About Contact us My IOPscience A new inclusive secondary vertex algorithm for b-jet tagging in This content has been downloaded from IOPscience. Please scroll down to see

More information