CERN Accelerating science

Početna stranica > Articles & Preprints > CERN Notes > CMS Physics Analysis Summaries

CMS Physics Analysis Summaries

Pretražite 1,743 zapise za:
Savjeti za pretraživanje :: Jednostavno pretraživanje
Added/modified since: do:
Sortiraj po: Prikaz rezultata: Oblik izlaznih podataka:
Najnovije dodano:
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. [...]
CMS-PAS-HIG-21-019.- Geneva : CERN, 2023 Figure_001-a: PDF; Figure_001-b: PDF; Figure_001-c: PDF; Figure_001-d: PDF; Figure_001-e: PDF; Figure_002: PDF; Figure_003: PDF; Figure_004: PDF; Figure_005-a: PDF; Figure_005-b: PDF; Figure_005-c: PDF; Figure_005-d: PDF; Figure_005-e: PDF; Figure_005-f: PDF; Figure_005-g: PDF; Figure_005-h: PDF; Figure_005-i: PDF; Figure_006: PDF; Figure_007: PDF; Figure_008: PDF; Figure_009: PDF; Figure_010: PDF; Figure_011: PDF; Figure_012: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

Detaljnije - Slični zapisi
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 $13~\mathrm{TeV}$. [...]
CMS-PAS-HIG-22-008.- Geneva : CERN, 2023 Figure_001-a: PDF; Figure_001-b: PDF; Figure_001-c: PDF; Figure_002-a: PDF; Figure_002-b: PDF; Figure_002-c: PDF; Figure_002-d: PDF; Figure_002-e: PDF; Figure_002-f: PDF; Figure_003-a: PDF; Figure_003-b: PDF; Figure_003-c: PDF; Figure_003-d: PDF; Figure_004-a: PDF; Figure_004-b: PDF; Figure_004-c: PDF; Figure_005-a: PDF; Figure_005-b: PDF; Figure_005-c: PDF; Figure_006-a: PDF; Figure_006-b: PDF; Figure_007-a: PDF; Figure_007-b: PDF; Figure_008-a: PDF; Figure_008-b: PDF; Figure_008-c: PDF; Figure_008-d: PDF; Figure_009-a: PDF; Figure_009-b: PDF; Figure_009-c: PDF; Figure_010-a: PDF; Figure_010-b: PDF; Figure_010-c: PDF; Figure_010-d: PDF; Figure_011: PDF; Figure_012-a: PDF; Figure_012-b: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

Detaljnije - Slični zapisi
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 $0.3\pm0.03~\mu\mathrm{b}^{-1}$. [...]
CMS-PAS-HIN-23-007.- Geneva : CERN, 2023 Figure_001-a: PDF; Figure_001-b: PDF; Figure_002-a: PDF; Figure_002-b: PDF; Figure_003-a: PDF; Figure_003-b: PDF; Figure_004: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

Detaljnije - Slični zapisi
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 $|y| < 2.4$. [...]
CMS-PAS-HIN-21-014.- Geneva : CERN, 2023 Figure_001-a: PDF; Figure_001-b: PDF; Figure_001-c: PDF; Figure_001-d: PDF; Figure_002-a: PDF; Figure_002-b: PDF; Figure_003-a: PDF; Figure_003-b: PDF; Figure_004: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

Detaljnije - Slični zapisi
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$^{-1}$. [...]
CMS-PAS-HIN-22-001.- Geneva : CERN, 2023 Figure_001-a: PDF; Figure_001-b: PDF; Figure_002-a: PDF; Figure_002-b: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

Detaljnije - Slični zapisi
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. [...]
CMS-PAS-HIN-23-003.- Geneva : CERN, 2023 Figure_001: PDF; Figure_002: PDF; Figure_003: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

Detaljnije - Slični zapisi
2023-09-01
14:36
Elliptic anisotropy measurement of the $\rm{f}_0(980)$ hadron in proton-lead collisions and evidence of its quark-antiquark composition by CMS /CMS Collaboration
Despite its discovery half a century ago, the question about the quark content of the $\rm{f}_0(980)$ hadron has not been settled, whether its being an ordinary quark-antiquark meson, a tetraquark exotic state, a kaon-antikaon molecule, or a quark-antiquark-gluon hybrid. In this note, evidence that the $\rm{f}_0(980)$ hadron is an ordinary quark-antiquark meson is reported, by employing the number-of-constituent-quark (NCQ) scaling of elliptic flow anisotropies ($v_2$), empirically established by conventional hadrons up to transverse momentum ($p_{\rm {T}}$) of about 10~GeV/$c$ in relativistic heavy ion collisions. [...]
CMS-PAS-HIN-20-002.- Geneva : CERN, 2023 Figure_001: PDF; Figure_002: PDF; Figure_003: PDF; Figure_004-a: PDF; Figure_004-b: PDF; Figure_005-a: PDF; Figure_005-b: PDF; Figure_006: PDF; Figure_007-a: PDF; Figure_007-b: PDF; Figure_008: PDF; Figure_009: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

Detaljnije - Slični zapisi
2023-08-31
23:25
Search for production of single vector-like quarks decaying to tH or tZ in the all-hadronic final state in pp collisions at sqrt(s) = 13 TeV /CMS Collaboration
A search for electroweak production of a single vector-like quark $\mathrm{T}$ in association with a bottom quark ($\mathrm{b}$) and decaying fully hadronically is presented. This search uses proton-proton collision data at $\sqrt{s} = 13~\mathrm{TeV}$ collected by the CMS experiment at the CERN LHC during 2016--2018, corresponding to an integrated luminosity of $138~\mathrm{fb}^{-1}$. [...]
CMS-PAS-B2G-19-001.- Geneva : CERN, 2023 Figure_001: PDF; Figure_002: PDF; Figure_003-a: PDF; Figure_003-b: PDF; Figure_003-c: PDF; Figure_003-d: PDF; Figure_004-a: PDF; Figure_004-b: PDF; Figure_004-c: PDF; Figure_005-a: PDF; Figure_005-b: PDF; Figure_005-c: PDF; Figure_005-d: PDF; Figure_005-e: PDF; Figure_005-f: PDF; Figure_006: PDF; Figure_007-a: PDF; Figure_007-b: PDF; Figure_007-c: PDF; Figure_007-d: PDF; Figure_008-a: PDF; Figure_008-b: PDF; Figure_008-c: PDF; Figure_008-d: PDF; Figure_009-a: PDF; Figure_009-b: PDF; Figure_009-c: PDF; Figure_009-d: PDF; Figure_010-a: PDF; Figure_010-b: PDF; Figure_010-c: PDF; Figure_010-d: PDF; Figure_010-e: PDF; Figure_010-f: PDF; Figure_011-a: PDF; Figure_011-b: PDF; Figure_011-c: PDF; Figure_011-d: PDF; Figure_011-e: PDF; Figure_011-f: PDF; Figure_012-a: PDF; Figure_012-b: PDF; Figure_012-c: PDF; Figure_012-d: PDF; Figure_012-e: PDF; Figure_012-f: PDF; Figure_013-a: PDF; Figure_013-b: PDF; Figure_013-c: PDF; Figure_013-d: PDF; Figure_013-e: PDF; Figure_013-f: PDF; Figure_014-a: PDF; Figure_014-b: PDF; Figure_014-c: PDF; Figure_014-d: PDF; Figure_014-e: PDF; Figure_014-f: PDF; Figure_015-a: PDF; Figure_015-b: PDF; Figure_015-c: PDF; Figure_015-d: PDF; Figure_015-e: PDF; Figure_015-f: PDF; Figure_016-a: PDF; Figure_016-b: PDF; Figure_016-c: PDF; Figure_016-d: PDF; Figure_016-e: PDF; Figure_016-f: PDF; Figure_017-a: PDF; Figure_017-b: PDF; Figure_017-c: PDF; Figure_017-d: PDF; Figure_017-e: PDF; Figure_017-f: PDF; Figure_018-a: PDF; Figure_018-b: PDF; Figure_018-c: PDF; Figure_018-d: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

Detaljnije - Slični zapisi
2023-08-31
07:53
Test of lepton flavor universality violation in semileptonic $B_c^+$ meson decays at CMS /CMS Collaboration
A measurement of the ratio of branching fractions $\mathrm{R}(\mathrm{J}/\psi) = \mathcal{B}(\mathrm{B}_{\mathrm{c}}^+\rightarrow\mathrm{J}/\psi\tau^+\nu_{\tau}) /$ $ \mathcal{B}(\mathrm{B}_{\mathrm{c}}^+\rightarrow\mathrm{J}/\psi\mu^+\nu_{\mu})$ in the $\mathrm{J}/\psi\rightarrow\mu^+\mu^-$, $\tau^+\rightarrow\mu^+\nu_{\mu}\nu_{\bar{\tau}}$ decay channel is presented. This measurement uses a sample of proton-proton collision data at a center of mass energy of 13 TeV collected by the CMS experiment in 2018 and corresponding to $59.7~\mathrm{fb}^{-1}$ of integrated luminosity. [...]
CMS-PAS-BPH-22-012.- Geneva : CERN, 2023 Figure_001-a: PDF; Figure_001-b: PDF; Figure_001-c: PDF; Figure_002: PDF; Figure_003-a: PDF; Figure_003-b: PDF; Figure_003-c: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

Detaljnije - Slični zapisi
2023-08-31
06:45
Test of lepton flavor universality in $\mathrm{B}^{\pm}\rightarrow \mathrm{K}^\pm \ell^+ \ell^-$ decays /CMS Collaboration
A test of lepton flavor universality in $\mathrm{B}^\pm \to \mathrm{K}^\pm\ell^+\ell^-$ decays, where $\ell$ is a muon or electron, as well as a measurement of differential and inclusive branching fractions of a nonresonant $\mathrm{B}^\pm \to\mathrm{K}^\pm\mu^+\mu^-$ decay with the CMS experiment at the LHC are presented. The analysis is made possible by a dedicated data set of proton-proton collisions at $\sqrt{s} = 13$ TeV recorded in 2018, using a special high-rate data stream designed for collecting about 10 billion unbiased b hadron decays. [...]
CMS-PAS-BPH-22-005.- Geneva : CERN, 2023 Figure_001: PDF; Figure_002: PDF; Figure_003: PDF; Figure_004-a: PDF; Figure_004-b: PDF; Figure_005-a: PDF; Figure_005-b: PDF; Figure_005-c: PDF; Figure_006-a: PNG; Figure_006-b: PNG; Figure_006-c: PNG; Figure_006-d: PNG; Figure_006-e: PNG; Figure_006-f: PNG; Figure_006-g: PNG; Figure_006-h: PNG; Figure_007-a: PNG; Figure_007-b: PNG; Figure_007-c: PNG; Figure_007-d: PNG; Figure_007-e: PNG; Figure_007-f: PNG; Figure_007-g: PNG; Figure_008-a: PDF; Figure_008-b: PDF; Figure_008-c: PDF; Figure_008-d: PDF; Figure_008-e: PDF; Figure_008-f: PDF; Figure_009: PDF; Figure_010: PDF; Figure_011: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

Detaljnije - Slični zapisi