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CMS Physics Analysis Summaries
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2024-03-28
09:17
Measurement of the $\mathrm{B}^0_\mathrm{s}$ effective lifetime in the decay $\mathrm{B}^0_\mathrm{s}\to\mathrm{J}/\psi\, \mathrm{K}^0_\mathrm{S}$ from pp collisions at $\sqrt{s} = 13~\mathrm{TeV}$
/CMS Collaboration
The effective lifetime of the $\mathrm{B}^0_\mathrm{s}$ meson in the decay $\mathrm{B}^0_\mathrm{s}\to\mathrm{J}/\psi \, \mathrm{K}^0_\mathrm{S}$ is measured using data collected during 2016--2018 with the CMS detector in $\sqrt{s}=13~\mathrm{TeV}$ proton-proton collisions at the LHC, corresponding to an integrated luminosity of $140~\mathrm{fb}^{-1}$. The effective lifetime is determined by performing a two-dimensional unbinned maximum likelihood fit to the $\mathrm{B}^0_\mathrm{s}\to\mathrm{J}/\psi\, \mathrm{K}^0_\mathrm{S}$ meson invariant mass and proper decay time distributions.
[...]
CMS-PAS-BPH-22-001.-
Geneva : CERN, 2024
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2024-03-27
18:26
Inclusive and differential measurement of top quark cross sections in association with a Z boson
/CMS Collaboration
A measurement is presented of the inclusive and differential cross sections for top quark production in association with a Z boson, in pairs ($\mathrm{t\bar{t}Z}$) or with a single top quark ($\mathrm{tZq}$ and $\mathrm{tWZ}$). The data were recorded in pp collisions at a center-of-mass energy of $13~\mathrm{TeV}$, corresponding to an integrated luminosity of $138~\mathrm{fb}^{-1}$.
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CMS-PAS-TOP-23-004.-
Geneva : CERN, 2024
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2024-03-27
17:19
Probing entanglement in top quark production with the CMS detector
/CMS Collaboration
Entanglement is an intrinsic property of quantum mechanics and its measurement probes the current understanding of the underlying quantum nature of elementary particles at a fundamental level. A measurement of the extent of entanglement in top quark-antiquark ($\mathrm{t\bar{t}}$) events produced in proton-proton collisions at a center-of-mass energy of 13 TeV is performed on the data recorded by the CMS experiment at the CERN LHC in 2016, corresponding to an integrated luminosity of 35.9 $\mathrm{fb^{-1}}$.
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CMS-PAS-TOP-23-001.-
Geneva : CERN, 2024
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2024-03-27
16:38
Measurement of the Drell-Yan forward-backward asymmetry and of the effective leptonic weak mixing angle using proton-proton collisions at 13 TeV
/CMS Collaboration
The forward-backward asymmetry in Drell--Yan production and the effective leptonic electroweak mixing angle are measured using a sample of proton-proton collisions at $\sqrt{s}=13~\mathrm{TeV}$ collected by the CMS experiment and corresponding to an integrated luminosity of $137~\mathrm{fb}^{-1}$. The measurement uses both dimuon and dielectron events, and is performed as a function of the dilepton's mass and rapidity.
[...]
CMS-PAS-SMP-22-010.-
Geneva : CERN, 2024
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2024-03-27
11:51
Measurement of inclusive and differential cross sections for single top quark production in association with a W boson in proton-proton collisions at $\sqrt{s}=13.6~\mathrm{TeV}$
/CMS Collaboration
The first measurement of the inclusive and normalised differential cross sections for the production of single top quarks in association with a W boson in proton-proton collisions at a centre-of-mass energy of 13.6 TeV are presented. The data used were recorded with the CMS detector at the LHC during 2022, and correspond to an integrated luminosity of 34.7 $\mathrm{fb}^{-1}$.
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CMS-PAS-TOP-23-008.-
Geneva : CERN, 2024
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2024-03-27
06:38
Search for heavy long-lived charged particles with large ionization energy loss in proton-proton collisions at $\sqrt{s} = 13~\mathrm{TeV}$
/CMS Collaboration
A search for heavy, long-lived, charged particles depositing large ionization within the silicon tracker is presented. This analysis uses proton-proton collision data with center of mass energy at $\sqrt{s} = 13~\mathrm{TeV}$, collected in 2017 and 2018 by the CMS experiment at the CERN LHC, corresponding to an integrated luminosity of 101$~\mathrm{fb}^{-1}$.
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CMS-PAS-EXO-18-002.-
Geneva : CERN, 2024
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2024-03-26
22:26
Model-independent search for pair production of new bosons decaying into muons in proton-proton collisions at $\sqrt{s} = 13$ TeV
/CMS Collaboration
The results of a model-independent search for the pair production of new bosons within a mass range of $0.21 < \mathrm{m} < 60~\mathrm{GeV}$, are presented. This study utilizes events featuring four muons in the final state and a dataset, comprising $41.5~\mathrm{fb}^{-1}$ and $59.7~\mathrm{fb}^{-1}$ of proton-proton collisions at $\sqrt{s}=13~\mathrm{TeV}$, recorded in 2017 and 2018 by the CMS experiment at the CERN LHC.
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CMS-PAS-HIG-21-004.-
Geneva : CERN, 2024
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2024-03-26
10:13
Search for $CP$ violation in $\mathrm{D}^0\to\mathrm{K}^0_{\mathrm{S}}\mathrm{K}^0_{\mathrm{S}}$ decay from proton-proton collisions at 13 TeV
/CMS Collaboration
A search is reported for $CP$ violation in the $\mathrm{D}^0\to\mathrm{K}^0_{\mathrm{S}}\mathrm{K}^0_{\mathrm{S}}$ decay, using data collected from proton-proton collisions at $\sqrt{s} = 13~\mathrm{TeV}$ recorded by the CMS experiment in 2018. A dedicated data set of about 10 billion events containing a pair of b hadrons, nearly all of which decay to charm hadrons, is used.
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CMS-PAS-BPH-23-005.-
Geneva : CERN, 2024
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2024-03-26
07:57
Search for a heavy resonance decaying into ZH in events with an energetic jet and two electrons, two muons, or missing transverse momentum
/CMS Collaboration
A search is presented for a heavy resonance decaying into a Z boson and a Higgs (H) boson. The analysis uses data from proton-proton collisions at a centre-of-mass energy of $13~\mathrm{TeV}$ corresponding to $138~\mathrm{fb}^{-1}$ of integrated luminosity, recorded with the CMS experiment in the years 2016 to 2018.
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CMS-PAS-B2G-23-008.-
Geneva : CERN, 2024
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2024-03-26
07:03
Search for low-mass long-lived particles decaying to displaced jets in proton-proton collisions at $\sqrt{s} = 13.6~\mathrm{TeV}$
/CMS Collaboration
A search for low-mass long-lived particles decaying to displaced jets is presented, using a data sample corresponding to an integrated luminosity of $34.7~\mathrm{fb}^{-1}$, collected with the CMS detector at the CERN LHC in 2022. Novel trigger, reconstruction, and machine learning techniques were developed for and employed in this search.
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CMS-PAS-EXO-23-013.-
Geneva : CERN, 2024
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