CMS Experiment Results and Future Plans for Upgrade

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

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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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