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CMS Experiment Results and Future Plans for Upgrade
Juan Suarez Gonzalez
Institute for Nuclear Problems BSU
On behalf of the CMS Collaboration
ISMART 2016
Minsk, Belarus
27th September 2016
Outline
• Standard Model Physics • Higgs Physics • Top • Exotica • SUSY • Upgrade phase I • Upgrade phase II • Outlook
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CMS Collaboration
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1700 physicists, 700 students, 950 engineers/technicians, 180 institutions from 43 countries
LHC
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Integrated Luminosity
CMS data collection efficiency = 92,0% CMS data certification efficiency = 92,5%
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Standard Model Physics
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Cross-section Review
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Drell-Yan cross section measurement
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2-3% system. Precision; compared NNLO predictions calculated with FEWZ and NLO predictions calculated with aMC@NLO [CMS-PAS-SMP-16-009]
ZZ production Cross-section measurement
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σ(ZZ)=(14.6+1.9-1.8(stas)+0.5-0.3(syst)+/-0.2(th)+/-0.4(lum))pb NNLO: (15.0+0.7-0.6+/-0.2)pb ~ 14% precision, limited by statistics [CMS-PAS-SMP-16-001] (arXiv:1607.08834)
Double differential inclusive jet CS
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[CMS-SMP-15-007](Eur.Phys.J.C 76(2016)451)
Higgs Physics
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H->γγ
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Observation of the Higgs boson in the γγ channel alone with significance exceeding 6 sigma [CMS-PAS-HIG-16-020]
H->ZZ*
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Observation of the Higgs boson in the ZZ* channel alone with significance exceeding 6 sigma [CMS-PAS-HIG-16-033]
Global Signal Strengths
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[arXiv:1606.02266v2, JHEP08(2016)045]
The best fit value for the parameter µ from ATLAS and CMS data at √S=7 and 8 TeV.
TOP
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Inclusive tt Cross-section measurement
Results consistent and in agreement with NNLO+NNLL over a large range of centre-of-mass energies
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Single top+Z+jet production
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A moderate excess of events compatible with SM tZq production is observed. The measured CS is σ(tZ->lνbl+l-q)=(10+8-7) fb with a significance of 2.4 sigma. BR(t->Zu)<0.022%,BR(t->Zc)<0.049% at 95 CL. No presence of FCNC production of tZ(q) is observed. [CMS-PAS-TOP-12-039]
Evidence for tt production in association with a W or Z boson
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σ(ttZ)=(0.70+0.16-0.15(stas)+0.14-0.12(syst))pb, σ(ttW)=(0.98+0.23-0.22(stas)+0.22-0.18(syst))pb. Expect.(obs.) signif. of 2.6(4.6) from the background-only hypothesis respectively. The measurement is in agreement with SM predictions. [CMS-PAS-TOP-16-017]
EXOTICA
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Search for resonances with dijets
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7.7 TeV the highest dijet invariant mass [CMS-PAS-EXO-16-032]
CMS Di-photon Mass Spectrum
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Not excess of events observed in comparison with SM predictions [CMS-PAS-EXO-027]
Search for Z’ in e-e+ and μ-μ+ channels
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Exclusion limits for: Z’_ssm (3% width)> 4 TeV (95% CL) and Z’_ψ (0.5% width)> 3.36 TeV (95% CL) [CMS-PAS-EXO-16-031]
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1.Mono+top [CMS-PAS-EXO-16-040], 2.Mono+V [CMS-PAS-EXO-16-037], 3.Mono+jet [CMS-PAS-EXO-16-037], 4.Mono+tt [CMS-PAS-HIG-16-005], 5.MET+photon [CMS-PAS-HIG-16-039], 6.Mono+Z[CMS-PAS-HIG-16-038], 7.Mono+H(γ γ ) [CMS-PAS-HIG-16-011], 8.Mono+H (bb)[CMS-PAS-HIG-16-012].
Limits on Dark-Matter search
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SUSY
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Gluino, stop and neutralino production
Constraints in the stop-neutralino plane obtained with fully-hadronic final states [CMS-PAS-SUS-16-028]
Gluino decay to qq+LSP
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Upgrade Phase I
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Schedule for upgrades
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Upgrade during the end of this year
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Upgrade Phase II
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Upgrade to face high pile-up and high radiation
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Outlook
• LHC surpassing any expectation
• A lot of new impressive results in CMS
• Looking for more with full 2016 data set
• Upgrade Phase I well in advance
• Preparing for TDR phase II 32 Juan Suarez Gonzalez ISMART 2016 27-09
Thank You for your Attention!!
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Backup
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Double-boson Cross section
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Upcoming ACTIVITIS for Upgrade I
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