2013-06-14
17:01 |
Measurements of the properties of the Higgs-like boson with the CMS experiment at the LHC
/ Azzurri, Paolo (INFN, Pisa)
/CMS Collaboration
Measurements of the properties of the
recently discovered Higgs-like boson are presented
using data samples recorded by the CMS experiment corresponding to
integrated luminosities of up to 5.1~fb$^{-1}$ at 7~TeV
and up to 12.2~fb$^{-1}$ at 8~TeV in proton proton collisions at the LHC.
The results combine decay modes
in pairs of photons, Z bosons, W bosons, tau leptons and b quarks.
The mass of the boson is determined to be 125.8$\pm$0.4~(stat.)
$\pm$0.4 (syst.)~GeV, and the signal strength at the measured mass
is $\mu = 0.88\pm 0.21$, normalized to the standard model expectation.
Combined results on couplings, spin and parity reveal a broad
agreement with the expectations of a standard model Higgs boson..
CMS-CR-2013-146; CERN-CMS-CR-2013-146.-
Geneva : CERN, 2013 - 9 p.
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2013-06-14
17:01 |
Measurements of Higgs Boson Properties in CMS.
/ Whitbeck, Andrew James (Johns Hopkins U.)
/CMS Collaboration
Property measurements of the Higgs boson candidate are presented using proton-proton collision data collected with the Compact Muon Solenoid (CMS) detector corresponding to integrated luminosities of 5.1~fb$^{-1}$ at $\sqrt{s}$=7~TeV and up to 19.6~fb$^{-1}$ at $\sqrt{s}$=8~TeV. Combined mass measurements using the ZZ and $\gamma\gamma$ decay channels and consistency of couplings of the observed boson with respect to those predicted from the SM Higgs boson is tested using data corresponding to 5.1~fb$^{-1}$ at $\sqrt{s}$=7~TeV and up to 12.2~fb$^{-1}$ at $\sqrt{s}$=8~TeV. [...]
CMS-CR-2013-145; CERN-CMS-CR-2013-145.-
Geneva : CERN, 2013 - 7 p.
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2013-06-14
17:01 |
Search for an excited quark decaying to a top quark plus gluon.
/ Wang, Ta-Wei (Taiwan, Natl. Taiwan U.)
/CMS Collaboration
We perform a search for a pair-produced-excited top quark, t*, that decays exclusively to a top quark and a gluon using data collected by the CMS detector from pp collisions at $\sqrt{s}$ = 8 TeV.
The search is performed using events consistent with the semi-leptonic decay of the t*t*system, that is events having a single isolated muon or electron, missing energy, and at least six well-reconstructed jets, one of which must be identified as originating from the fragmentation of a b quark.
The data analyzed corresponds to an integrated luminosity of 19.6 fb$^{-1}$ in both muon and electron channel.
No significant excess over expectations is observed and we set a lower limit is on a t*-quark mass at 95\% confidence level..
CMS-CR-2013-144; CERN-CMS-CR-2013-144.-
Geneva : CERN, 2013 - 4 p.
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2013-06-14
17:01 |
Search for neutral MSSM Higgs bosons with CMS
/ Zucchetta, Alberto (INFN, Padua ; Padua U.)
/CMS Collaboration
Results on the search for neutral Higgs bosons, in the context of the Minimal Supersymmetric extension of the Standard Model (MSSM), are presented. Different decay channels and final states are considered, including the production of the bosons in association with additional b-quarks and their decay into tau, muon, and b-quark pairs. [...]
CMS-CR-2013-139; CERN-CMS-CR-2013-139.-
Geneva : CERN, 2013 - 4 p.
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2013-06-14
17:01 |
Top quark Physics at the LHC
/ Battilana, Carlo (Madrid, CIEMAT)
/ATLAS and CMS Collaborations
An overview of recent results on top quark properties and interactions is given, obtained using data collected with the CMS and ATLAS experiments during the years 2011 and 2012 at 7 TeV and 8 TeV centre-of-mass energies. Measurements of top quark pair production cross sections in several top quark final states are reported. [...]
CMS-CR-2013-135; CERN-CMS-CR-2013-135.-
Geneva : CERN, 2013 - p.
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2013-06-14
16:59 |
Measurements of the top-quark properties at CMS
/ Yazgan, Efe (Gent U.)
/CMS Collaboration
Measurements of several top-quark properties, obtained from the CMS data collected in 2011 and 2012 at centre-of-mass energies of 7 and 8 TeV are presented. The results include measurements of the top pair charge asymmetry, the W helicity in top quark decays and the search for anomalous couplings, the top quark charge, and of the $t\overline{t}$ spin correlation. [...]
CMS-CR-2013-132; CERN-CMS-CR-2013-132.-
Geneva : CERN, 2013 - 6 p.
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2013-06-04
14:02 |
Measurement of the X(3872) production cross section via decays to $J/\psi\pi^{+}\pi^{-}$
/ Dall'Osso, Martino (INFN, Bologna ; Bologna U.)
/CMS Collaboration
The production of the X(3872) is studied in $pp$ collisions at $\sqrt{s} = 7$ TeV with the CMS detector at LHC, using decays to $J/\psi\pi^{+}\pi^{-}$ where the $J/\psi$ decays to two muons. For the first time, the prompt X(3872) cross section times branching fraction is extracted differentially in $p_{T}$. [...]
CMS-CR-2013-140; CERN-CMS-CR-2013-140.-
Geneva : CERN, 2013 - 3 p.
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2013-06-04
14:02 |
Search for the rare decays $B^0 \rightarrow \mu^+\mu^-$ and $B^0_s \rightarrow \mu^+\mu^-$ with the CMS detector
/ De Mattia, Marco (Purdue U.)
/CMS Collaboration
A search for the rare decays $B^0_s \rightarrow \mu^+\mu^-$ and $B^0 \rightarrow \mu^+\mu^-$ is performed in pp collisions at $\sqrt{s}$ = 7 TeV, with a data sample corresponding to an integrated luminosity of 5 fb$^{-1}$ collected by the CMS experiment at the LHC. In both decays, the number of events observed after all selection requirements is consistent with the expectation from background plus standard model signal predictions. [...]
CMS-CR-2013-138; CERN-CMS-CR-2013-138.-
Geneva : CERN, 2013 - 7 p.
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2013-06-04
14:02 |
Top Quark Physics at LHC. Results on CP violation and FCNC in top quark decays
/ Ferro, Cristina (Taiwan, Natl. Central U.)
/ATLAS and CMS Collaborations
Results on $CP$, $CPT$ violation and Flavor Changing Neutral Current (FCNC) in top quark physics, obtained from the ATLAS and CMS collaborations are presented. Results are obtained using both single top and $t\bar{t}$ events produced at 7 and 8 TeV. [...]
CMS-CR-2013-137; CERN-CMS-CR-2013-137.-
Geneva : CERN, 2013 - 8 p.
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2013-06-04
14:02 |
Angular analysis and branching ratio measurement of the decay ${\rm B}^0 \rightarrow {\rm K}^{*0} \mu^+ \mu^-$
/ Dinardo, Mauro (INFN, Milan Bicocca)
/CMS Collaboration
The angular distributions and the differential branching fraction of the decay ${\rm B}^{0} \rightarrow {\rm K}^{*0} \mu^{+} \mu^{-}$ are studied using an integrated luminosity of 5.2\,fb$^{-1}$ of data collected with the CMS detector. The forward-backward asymmetry of the muons $A_{FB}$, the ${\rm K}^{\ast 0}$ longitudinal polarization fraction $F_{L}$, and the differential branching fraction ${\rm d}\mathcal{B}/{\rm d}q^{2}$, are determined as a function of the dimuon invariant mass squared. [...]
CMS-CR-2013-133; CERN-CMS-CR-2013-133.-
Geneva : CERN, 2013 - 9 p.
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