CERN Accelerating science

CMS Conference Reports

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2016-05-18
10:12
SUSY searches in leptonic final states at CMS / Franco Sevilla, Manuel (UC, Santa Barbara) /CMS Collaboration
Results from searches for supersymmetry in single lepton, same-sign dilepton, opposite-sign same-flavordilepton, and multilepton final states are reported. The observed yields in data samples corresponding to anintegrated luminosity of 2.1--2.3~fb$^{-1}$ at $\sqrt s=13$ TeV, recorded by the CMS experiment at the LHC, areconsistent with the expectations from standard model backgrounds. [...]
CMS-CR-2016-082.- Geneva : CERN, 2016 - 5 p. Fulltext: PDF;
In : 51st Rencontres de Moriond on QCD and High Energy Interactions, La Thuile, Italy, 19 - 26 Mar 2016

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2016-05-18
10:12
SUSY searches in hadronic final states at CMS / Zevi Della Porta, Giovanni (UC, San Diego) /CMS Collaboration
Several searches for strongly-produced supersymmetric particles are presented.The searches are based on a data sample of proton-proton collisions with a center-of-mass energy of 13 TeV collected by the CMS experiment during the 2015 LHC run, corresponding to an integrated luminosity of 2.3 fb-1..
CMS-CR-2016-079.- Geneva : CERN, 2016 - 5 p. Fulltext: PDF;
In : 51st Rencontres de Moriond on QCD and High Energy Interactions, La Thuile, Italy, 19 - 26 Mar 2016

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2016-05-18
10:11
Results and Prospects for $\mathrm{t\overline{t}H}$ at CMS / Hauk, Johannes (DESY) /CMS Collaboration
First results of associated top-quark pair and Higgs-boson production ($\mathrm{t\overline{t}H}$) at CMS from the LHC Run~2 era at centre-of-mass energy $\sqrt{s}=13\,\mathrm{Te\hspace{-.08em}V}$ are presented. The $\mathrm{t\overline{t}H}$ process is the only one allowing a direct measurement of the top-Higgs coupling, which is an important test of the Standard Model (SM), and for searching new physics. Three analyses are performed and optimised individually according to different Higgs boson decays, and results are obtained in each for the signal strength~$\mu=\sigma/\sigma_{\mathrm{SM}}$ being the cross-section ratio of the measurement to the SM prediction. The diphoton decay $\mathrm{t\overline{t}H}$($\gamma\gamma$) results in $\mu=3.8^{+4.5}_{-3.6}$, the decays with leptons in the final state $\mathrm{t\overline{t}H}$(multileptons) in $\mu=0.6^{+1.4}_{-1.1}$, and the decay to a bottom quark pair $\mathrm{t\overline{t}H}$($\mathrm{b\overline{b}}$) yields $\mu=-2.0\pm1.8$. A combined result of $\mu_{\mathrm{t\overline{t}H}}=0.15^{+0.95}_{-0.81}$ is obtained from a fit to all three channels. No significant deviation from the SM is observed..
CMS-CR-2016-078.- Geneva : CERN, 2016 - 9 p. Fulltext: PDF;
In : 51st Rencontres de Moriond on Electroweak Interactions and Unified Theories, La Thuile, Italy, 12 - 19 Mar 2016

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2016-05-18
10:08
(YSF) Search for supersymmetry in the mutijet+MET final state / Bradmiller-Feld, John (UC, Santa Barbara) /CMS Collaboration
We present results from a generic search for strongly-produced supersymmetric particles in pp collisions in the multijet + missing transverse momentum final state. The data sample corresponds to 2.3 fb-1 recorded by the CMS experiment at $\sqrt{s}=13$ TeV. [...]
CMS-CR-2016-076; arXiv:1605.05762.- Geneva : CERN, 2016 - 5 p. Fulltext: PDF; External link: Fulltext
In : 51st Rencontres de Moriond on Electroweak Interactions and Unified Theories, La Thuile, Italy, 12 - 19 Mar 2016

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2016-05-18
10:08
(YSF) Search for heavy fermionic top partners decaying to same-sign dileptons at 13 TeV / Richardson, Clint Allan (Boston U.) /CMS Collaboration
With the discovery of the Higgs Boson during Run 1 of the Large Hadron Collider, one of the most important questions to answer during Run 2 is the naturalness problem. Composite Higgs theories answer the naturalness problem by regulating the quadratic divergences to the mass of the Higgs boson via fermionic top partners. [...]
CMS-CR-2016-069.- Geneva : CERN, 2016 - 5 p. Fulltext: PDF;
In : 51st Rencontres de Moriond on Electroweak Interactions and Unified Theories, La Thuile, Italy, 12 - 19 Mar 2016

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2016-05-18
10:07
(YSF) Vertex identification in the search for a Higgs boson decaying to two photons / Kucher, Inna (IRFU, Saclay) /CMS Collaboration
A search for a Higgs boson decaying to two photons has been performed by the CMS Collaboration at the LHC experiment using pp collisions at a center-of-mass energy of 13TeV with an integrated luminosity of 2.6/fb. In the decay of the Higgs boson into two photons, the unconverted final state photons are not detected in the tracker, so the determination of the associated primary vertex is not trivial. [...]
CMS-CR-2016-077.- Geneva : CERN, 2016 - 6 p. Fulltext: PDF;
In : 51st Rencontres de Moriond on Electroweak Interactions and Unified Theories, La Thuile, Italy, 12 - 19 Mar 2016

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2016-05-18
09:59
ttbar(+x) pair production at CMS and ATLAS / Seidel, Markus (CERN) /ATLAS and CMS Collaborations
The production cross section of top quark pairs was measured by the ATLAS and CMS collaborations at the Large Hadron Collider (LHC) in pp collisions at 7-13.This report briefly summarizes the most recent results..
CMS-CR-2016-068.- Geneva : CERN, 2016 - 5 p. Fulltext: PDF;
In : 51st Rencontres de Moriond on QCD and High Energy Interactions, La Thuile, Italy, 19 - 26 Mar 2016

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2016-05-18
09:58
New physics in final states with jets or vector bosons (B2G) / Pequegnot, Anne-Laure (Lyon, IPN) /CMS Collaboration
A survey is presented of results from some recent searches for new physics in final states with jets or vector bosons such as dijet, black holes, massive resonances or vector-like quarks searches. The results are based on 13 TeV or 8 TeV proton-proton collision data collected by the CMS detector at the LHC..
CMS-CR-2016-063.- Geneva : CERN, 2016 - 9 p. Fulltext: PDF;
In : 30th Les Rencontres de Physique de la Vallée d'Aoste Results and Perspectives in Particle Physics, La Thuile, Aosta Valley, Italie, 6 - 12 Mar 2016

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2016-05-18
09:57
Top-Quark Properties at the LHC / Beernaert, Kelly Simone (DESY) /ATLAS and CMS Collaborations
A review of recent measurements of top-quark properties is presented. Inclusive and differential top-quark pair charge asymmetry measurements using the full Run I dataset are found to be in agreement with the standard model (SM) predictions. [...]
CMS-CR-2016-061; arXiv:1605.05493.- Geneva : CERN, 2016 - 5 p. Fulltext: PDF; External link: Fulltext
In : 51st Rencontres de Moriond on QCD and High Energy Interactions, La Thuile, Italy, 19 - 26 Mar 2016

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2016-05-18
09:56
Upgrade of the CMS muon trigger system in the barrel region / Rabady, Dinyar Sebastian (Vienna, OAW) /CMS Collaboration
To maintain the excellent performance shown during the LHCs Run-1 the Level-1 Trigger of the Compact Muon Solenoid experiment underwent a significant upgrade. One part of this upgrade is the re-organization of the muon trigger path from a subsystem-centric view in which hits in the drift tubes (DT), the cathode strip chambers (CSC), and the resistive plate chambers (RPC) were treated separately in dedicated track-finding systems to one in which complementary detector systems for a given region (barrel, overlap, and endcap) are merged at the track-finding level. [...]
CMS-CR-2016-038.- Geneva : CERN, 2016 - 6 p. Fulltext: PDF;
In : 14th Vienna Conference on Instrumentation, Vienna, Austria, 15 - 19 Feb 2016

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