BSM Higgs, Experimental report. A. Nikitenko, IC 10 th June 2015, Les Houches

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1 BSM Higgs, Experimental report A. Nikitenko, IC 10 th June 2015, Les Houches

2 First pp collision for physics at 13 TeV June 3, 2015 No stone to be left unturned to search for BSM physics with Run II 12 Experimentalists from ATLAS+CMS in Les Houches 2015 for BSM Higgs Session 2

3 BSM Physics with Higgs bosons additional Higgs bosons non SM decays of h(125) BR BSM < 0.58 at 95% CL (CMS) precise measurements for h(125) EFT, CP properties.

4 MSSM, 2HDM

Prospects for 2015-2016 No immediate discovery for with first 5-10 fb -1 is expected.

5 Prospects for No immediate discovery for with first 5-10 fb -1 is expected. with ~ 5-10 fb -1 at 13 TeV expect to reach 8 TeV/20 fb -1 sensitivity of current 8 TeV analyses and start to explore a new territory J. Stirling 2013 A. Djouadi et al arxiv: MSSM A/H/H + M. Carena et al arxiv: Search for heavy A/H->cc decays could complement direct searches cc searches: Les Houches project: Apyan Aram (CMS), H + ->cc A. Nikitenko (CMS), A/H->cc Long pre-lhc data history of these analyses: F. Moortgat et al, A. Ketevi et. al H/A->cc

Di-Higgs boson production in BSM: Alexandra Oliveira (CMS)

6 (MSSM) H hh ggbb, ttbb, bbbb How important is interference with BSM non-resonant di-higgs production? Di-Higgs boson production in BSM: Alexandra Oliveira (CMS) Devdatta Majumder (CMS) Chris Pollard (ATLAS) reconstruction of close by b- jets,

7 Presentation of limits from heavy Higgs searches in multi-higgs models Example from recent CMS H->ZA, A->ZH analysis (2HDM, m h =125) s x BR observed limit interpretation in 2HDM

Complementarity between precision measurements of h(125) and direct searches MSSM Carena, Haber, Low, Shah, Wagner, arxiv:1410.4969 alignment scenarios with large m Djouadi et.al. arxiv:1307.

8 Complementarity between precision measurements of h(125) and direct searches MSSM Carena, Haber, Low, Shah, Wagner, arxiv: alignment scenarios with large m Djouadi et.al. arxiv: HDM Direct search h 125 measurements sin(b-a)=1 sin(b+a)=1 Ferreira, Guedes, Gunion, Haber, Sampaio, Santos arxiv: sin(b-a)=1 => SM like limit (alignment) k F =k V =1 sin(b+a)=1 => k D =-1 (k U =k V =1) wrong sign limit; can be excluded with ~ 5 % accuracy on h->gg measurement

9 Open a new mass search region for pp->bbf and gg->f, f->mm, tt analyses ~ 20 GeV < m A < 60 GeV in 2HDM Type II Motivated by Gunion et al. arxiv: , arxiv: CMS: re-consider public 8 TeV analyses, bba, A->mm, tt tt mm

10 Issue 1 s(gg->a) at low m A can be much bigger than s(bba) gg->a contamination in b-tag category can be significant from to two sources: gg->a+gluon gluon->bb gluon is misstaged as b-jet b J. Gunion, Jiang Yun private communication Brown = wrong sign Yukawa cases: gg->a/bba ratio ~ 10 at m A =30 GeV Blue = normal sign Yukawa cases: gg->a/bba ratio can be 100 at m A =30 GeV Proper generation of gg->h+gluon, gluon->bb is important 10/06/

Quite large acceptance uncertainty of bbh generation with MG5_aMC@NLO due to Q sh Selections applied at particle level: p Tm1,2 > 25, 5 GeV, h m1,2 <2.1, 2.4 >=1 b-jet p T > 30 GeV, h <2.

11 Quite large acceptance uncertainty of bbh generation with due to Q sh Selections applied at particle level: p Tm1,2 > 25, 5 GeV, h m1,2 <2.1, 2.4 >=1 b-jet p T > 30 GeV, h <2.4 Issue 2 bbz can be used to tune MC settings and use them in h+b JHEP 06 (2012) 126, Z+b Selection efficiency shewer scale, Q sh variation 0.5 default x x x10-2 Uncert. -12 % +24 % JHEP 10 (2014) 141, Z+>=1b 10/06/

12 NMSSM, 2HDM+S

13 S. King, M. Muhlleitner, R. Nevzorov, K. Walz, arxiv: Very reach topologies with cross-sections > ~ 1 fb at 13 TeV! Need to set up the list of hottest and doable topologies for Run II Ulrich Goerlach (CMS) Benoit Courbon (CMS) Final states with photons Camilo Carillo (CMS) Light A/H->gg (m < 125 GeV) David Sabes (CMS) Light scalar bosons in SUSY Nicolas Chanon (CMS) Double Higgs

Search for scalar di-photon resonances, m X =[65-600] GeV S. King, M. Muhlleitner, R. Nevzorov, K. Walz, arxiv:1408.

14 Search for scalar di-photon resonances, m X =[65-600] GeV S. King, M. Muhlleitner, R. Nevzorov, K. Walz, arxiv: Result: limit on s x BR in fiducial volume Is it sensitive to SM Higgs Singlet Extension? From talk of Tania Robens at SUSY 2014 (see recent updates in arxiv: ) sx BR = (1-sin 2 a)s SM x BR SM < 12.2 fb at m h = 100 GeV

S. King, M. Muhlleitner, R. Nevzorov, K. Walz, arxiv:1408.

15 S. King, M. Muhlleitner, R. Nevzorov, K. Walz, arxiv: m t <m a1/h1 < 2m b h(125)->a 1 a 1 /h 1 h 1 mmtt 2m b <m a1/h1 < 0.5m h125 mmtt assuming Br(a->mm)+Br(a->tt )=1

16 h(125)->xx analyses in CMS with 8 TeV data: inspired, in particular by Stefano Moretti et. al, arxiv: King, Muhlleitner, Nevzorov, Walz arxiv: , M. Strassier et. al, arxiv: : Exotic decays of h125 h(125)->aa->4t, 2m t < m A < 2m b, approved with 8 TeV Paper under preparation (HIG ) h(125)->aa->mmbb, 2m b < m A < m h /2 still to be approved; HIG

17 Higgs and DM

g(gg)+met from VBF h(125) ATLAS analysis VBF h(125)->invis: BR obs <

18 Higgs and DM at LHC Invisible Latest ATLAS and CMS results on VBF h->invisible Semi-invisible ATLAS-CONF ; GMSB, NMSSM: g(gg)+met from VBF h(125) ATLAS analysis VBF h(125)->invis: BR obs < 0.29 BR exp < 0.35 CMS analysis: VBF h(125)->invis: BR obs < 0.57 BR exp < 0.40

19 Higgs and DM at LHC Mono-Higgs: Linda Carpenter et al arxiv: Other possibility: MSSM h 2 (125)->h 1 +MET from Felix Yu talk on LHCHXSWG/WG3 Fermilab meeting May 21, 2015 Les Houches project: Nicola De Filippis decays h->4l

20 Have a good work in Les Houches!

21 THE END

22 Non b-tag category is also dominated by bbh at large m A m A =300 GeV tanb = 20 m A =600 GeV tanb=20 s(gg->a+h)/s(bb->a+h) s(gg->a+h)/s(bb->a+h) x (e gg->h /e bb->h ) exp

23 bbh MC pp->bbh vs PY6/8 harder Higgs p T p T is sensitive to shower scale, Q sh in MG5_aMC@NLO use Z+b data to tune Q sh and apply it to H+b (very) different efficiency of the jet veto change of selection strategy for light pseudoscalar A analysis pp->bba,a->tt/mm 10/06/

24 Signal selection efficiencies vs PY6 for pp->bba, A->mm, m a =30 GeV Selection on muon p T, GeV h < 2.1 for both muons NLO+PY8 PY6 NLO+PY8 PY6 NLO+PY8 PY6 Muon selections >= 1 b-jet after m s sel. p T >30 GeV, h <2.4 1 b-jet no other jets h < Huge difference in additional jet veto decided to change a search strategy dropping the jet veto from the selections

Prospects for 2015-2016 No immediate discovery for Higgs-Exotics channels with first 5-10 fb -1 is expected so far: rare processes, need luminosity with ~ 5-10 fb -1 at 13 TeV expect to reach 8

25 Prospects for No immediate discovery for Higgs-Exotics channels with first 5-10 fb -1 is expected so far: rare processes, need luminosity with ~ 5-10 fb -1 at 13 TeV expect to reach 8 TeV/20 fb -1 sensitivity of current 8 TeV analyses and start to explore a new territory J. Stirling 2013 A. Djouadi et al arxiv: MSSM A/H/H + h(125)->aa, DM, mt M. Carena et al arxiv: Light c s are not excluded H/A->cc

26 Benchmarks and tools used so far by ATLAS and CMS for the interpretation in MSSM and 2HDM MSSM benchmark scenarios, arxiv: : tools: XS - HIGLU, SusHi, FeynHiggs; BRs: FeynHiggs+HDECAY 2HDM tools (no benchmark scenarios yet), arxiv: : SusHi+FeynHiggs or HIGLU+HDECAY

27 f->tt : model independent limits Go to MSSM interpretation using inclusive cross section from LHCHXSWG

28 H + ->tn: model independent limits and MSSM interpretation T. Plehn et al., hep-ph/ gb->th + no cross-sections yet available from LHCHXSWG to close the gap m H+ [ ] GeV

29 f->tt : interpretation in MSSM benchmark scenarios Carena, Haber, Low, Shah, Wagner, arxiv: Large m: no H->cc decays Djouadi, Maiani, Polosa, Quevillon, Riquer, arxiv:

30 What MSSM Higgs boson is discovered h or H? low m H scenario O. Stal arxiv: It is the little Higgs boson, h!

31 A->Zh: the s x BR limits so far 2HDM interpretation is done in the physics basis, CP-conserving with input: m h, m H, m A, m H+, a, tanb, m 12 additional parameters l 6,l 7 =0 as result of Z 2 symmetry (H 1 ->H 1, H 2 ->-H 2 ) and m 12 is taken as in MSSM: m A2 =m 122 /(sinbcosb)-l 5 v 2 with l 5 =0 as in MSSM

32 MSSM: inclusive cross-sections New for 13 TeV analyses (S. Liebler, talk on 9 th LHCHXSWG workshop Jan 2015 ): bbf: add y t y b interference term gg->f: change scale (m F /m R from m f to 0.5m f ) and uncertainty PDF+a S uncertainty as function of m f (not for every SUSY point) 13/14 TeV root files for Run I benchmark scenarios (Carena et al. 13) Santander matched xs for pp->h + tb; new scale setting for 5FS arxiv: /06/

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