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> CMS Physics Analysis Summaries
CMS Physics Analysis Summaries
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Darreres entrades:
2023-11-28
19:07
Constraints on the Higgs boson self-coupling with combination of single and double Higgs boson production
/CMS Collaboration
A combination of Higgs boson (H) measurements and searches for the production of Higgs boson pairs (HH) is presented, aiming to constrain the H trilinear self-coupling $\lambda_3$, using the proton-proton collision data collected by the CMS experiment at $\sqrt{s} = 13~\mathrm{TeV}$. The cross section of the main H production modes and the branching ratios of the principal decay channels depend on $\lambda_3$ because of next-to-leading-order electroweak corrections.
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CMS-PAS-HIG-23-006.-
Geneva : CERN, 2023
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2023-10-02
15:57
Portable Acceleration of CMS Production Workflow with Coprocessors as a Service
/CMS Collaboration
Computing demands for large scientific experiments, such as the CMS experiment at CERN, will increase dramatically in the next decades. To complement the future performance increases of software running on CPUs, explorations of coprocessor usage in data processing hold great potential and interest.
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CMS-PAS-MLG-23-001.-
Geneva : CERN, 2023
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2023-09-28
21:13
Search for flavor-changing neutral current interactions of the top quark and Higgs boson in proton-proton collisions at $\sqrt{s} = 13$ TeV
/CMS Collaboration
A search for flavor-changing neutral current interactions of the top quark (t) and Higgs boson (H) is presented. The search is based on Run 2 proton-proton collisions collected in 2016--2018 at a center-of-mass energy of 13 TeV with the CMS detector at the CERN LHC and corresponding to $138~\mathrm{fb}^{-1}$.
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CMS-PAS-TOP-22-002.-
Geneva : CERN, 2023
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2023-09-26
22:38
Combination of measurements of the top quark mass from data collected by the ATLAS and CMS experiments at $\sqrt{s}=7$ and $8~\mathrm{TeV}$
/CMS Collaboration
A combination of fifteen top quark mass measurements performed by the ATLAS and CMS experiments at the LHC is presented. The data sets used correspond to an integrated luminosity of up to 5 and $20~\mathrm{fb}^{-1}$ of proton-proton collisions at center-of-mass energies of 7 and $8~\mathrm{TeV}$, respectively.
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CMS-PAS-TOP-22-001.-
Geneva : CERN, 2023
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2023-09-19
09:38
Measurement of the Higgs boson mass and width using the four leptons final state
/CMS Collaboration
A measurement of the Higgs boson mass and width using the decays to two Z bosons is presented, using the proton-proton data collected by the CMS experiment at the LHC corresponding to an integrated luminosity of $138~\mathrm{fb}^{-1}$ at a center-of-mass energy of $13~\mathrm{TeV}$. The on-shell production of the Higgs boson with the decay $\mathrm{H} \to \mathrm{Z} \mathrm{Z}^* \to 4\ell$ is used to constrain its mass and width, which yields to the most precise single measurement of the mass to date $\mathrm{m}_\mathrm{H} = 125.08 \pm 0.12~\mathrm{GeV}$ and an upper limit on the width $\Gamma_\mathrm{H} < 60~\mathrm{MeV}$ at $68\%$ confidence level.
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CMS-PAS-HIG-21-019.-
Geneva : CERN, 2023
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2023-09-18
23:49
Constraints on anomalous Higgs boson couplings from its production and decay in the WW channel
/CMS Collaboration
A study of the Higgs boson anomalous couplings from its production and decay in the $\mathrm{WW}$ channel is presented. The proton-proton collision data set was collected with the CMS detector at the CERN LHC during 2016-2018, and corresponds to an integrated luminosity of $138~\mathrm{fb}^{-1}$ at a center-of-mass energy of $13~\mathrm{TeV}$.
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CMS-PAS-HIG-22-008.-
Geneva : CERN, 2023
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2023-09-18
17:50
Pseudorapidity distributions of charged hadrons in PbPb collisions at $\sqrt{\smash[b]{s_{_{\mathrm{NN}}}}} = 5.36$ TeV
/CMS Collaboration
The pseudorapidity ($\eta$) distributions of charged hadrons are measured using data collected at a record nucleon-nucleon center-of-mass energy of $\sqrt{\smash[b]{s_{_{\mathrm{NN}}}}}=5.36~\mathrm{TeV}$ for collisions of lead-lead (PbPb) ions. The data were recorded by the CMS experiment at the LHC in 2022 and correspond to an integrated luminosity of $0.3\pm0.03~\mu\mathrm{b}^{-1}$.
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CMS-PAS-HIN-23-007.-
Geneva : CERN, 2023
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2023-09-18
11:02
Constraining beauty quark energy loss and hadronization with $\text{B}^{+}$ and $\text{B}^{0}_{\text{s}}$ nuclear modification factors in PbPb collisions at $5.02\,\text{TeV}$ with CMS
/CMS Collaboration
The CMS Collaboration reports on the production yields of $\text{B}^{0}_{\text{s}}$ and $\text{B}^{+}$ mesons in proton-proton (pp) collisions recorded in 2017 at the CERN LHC with a center-of-mass energy of $5.02\,\text{TeV}$. Utilizing an integrated luminosity of 302.3$\,\text{pb}^{-1}$, the analysis focuses on the exclusive decay channels $\text{B}^{0}_{\text{s}} \to \text{J/}\psi (\mu^{+}\mu^{-})\,\phi (\text{K}^{+} \text{K}^{-})$ and $\text{B}^{+} \to \text{J/}\psi (\mu^{+}\mu^{-})\, \text{K}^{+}$ in a transverse momentum $(p_{\mathrm{T}})$ range of 7-50 $\text{GeV/c}$ and a rapidity interval $|y| < 2.4$.
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CMS-PAS-HIN-21-014.-
Geneva : CERN, 2023
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2023-09-12
23:54
Measurement of the $\mathrm{B}^+$ differential cross section as a function of transverse momentum and multiplicity in pPb collisions at $\sqrt{s_\mathrm{NN}}=$ 8.16 TeV
/CMS Collaboration
We present the measurement of the $\mathrm{B}^+$ meson production cross section with respect to the transverse momentum inclusively and, for the first time, in different charged particle multiplicities, in proton-lead collisions at a per nucleon center-of-mass energy of $8.16~\mathrm{TeV}$. The data were collected by the CMS detector during 2016 and correspond to an integrated luminosity of 175 nb$^{-1}$.
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CMS-PAS-HIN-22-001.-
Geneva : CERN, 2023
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2023-09-12
16:56
Extracting the speed of sound in the strongly interacting matter created in relativistic nuclear collisions
/CMS Collaboration
Ultrarelativistic nuclear collisions yield a strongly interacting state of hot and dense quark-gluon matter that exhibits a remarkable collective flow behavior with minimal viscous dissipation. To gain deeper insights into its intrinsic nature, we extracted the speed of sound in this medium utilizing data from $0.607~\mathrm{nb}^{-1}$ of lead-lead collisions at $\sqrt{\smash[b]{s_{_{\mathrm{NN}}}}}=5.02~\mathrm{TeV}$, recorded by the CMS experiment in 2018 at the CERN-LHC.
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CMS-PAS-HIN-23-003.-
Geneva : CERN, 2023
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