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CMS Physics Analysis Summaries

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2018-05-21
14:28
Measurement of light-by-light scattering in ultraperipheral PbPb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV /CMS Collaboration
A measurement of light-by-light scattering, $\gamma\gamma\to\gamma\gamma$, in ultraperipheral PbPb collisions at a centre-of-mass energy per nucleon pair of 5.02 TeV is reported. The analysis is conducted using a data sample corresponding to an integrated luminosity of $390~\mu\mathrm{b}^{-1}$ recorded by the CMS experiment at the LHC. [...]
CMS-PAS-FSQ-16-012.- Geneva : CERN, 2018 Figure_001: PNG; Figure_002: PDF; Figure_003-a: PDF; Figure_003-b: PDF; Figure_003-c: PDF; Figure_003-d: 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; Fulltext in PDF: PDF;

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2018-05-17
12:18
Femtoscopic Bose-Einstein Correlations of charged hadrons in proton-proton collisions at $\sqrt{s}=13~\mathrm{TeV}$ /CMS Collaboration
Femtoscopic correlations between charged hadrons are measured over a broad multiplicity range, from a few particles up to about 250 reconstructed charged hadrons, in proton-proton collisions at $\sqrt{s}=13~\mathrm{TeV}$. The results are based on data collected by the CMS detector at the CERN LHC. [...]
CMS-PAS-FSQ-15-009.- Geneva : CERN, 2018 Figure_001-a: PDF; Figure_001-b: PDF; Figure_001-c: PDF; Figure_001-d: PDF; Figure_001-e: PDF; Figure_001-f: PDF; Figure_002-a: PDF; Figure_002-b: PDF; Figure_003-a: PDF; Figure_003-b: PDF; Figure_003-c: PDF; Figure_003-d: PDF; Figure_003-e: PDF; Figure_003-f: PDF; Figure_004-a: PDF; Figure_004-b: PDF; Figure_004-c: PDF; Figure_004-d: PDF; Figure_005-a: PDF; Figure_005-b: 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_009-a: PDF; Figure_009-b: PDF; Figure_009-c: PDF; Figure_009-d: PDF; Figure_009-e: PDF; Figure_009-f: 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; Fulltext in PDF: PDF;

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2018-05-15
19:02
Production of prompt and nonprompt ${\rm J}\hspace{-.08em}/\hspace{-.14em}\psi$ mesons in jets in pp collisions at $\sqrt{s} = 5.02~\mathrm{TeV}$ /CMS Collaboration
The fragmentation of jets containing a ${\rm J}\hspace{-.08em}/\hspace{-.14em}\psi$ meson is studied in low pile-up pp data recorded in 2015, at a center-of-mass energy of $\sqrt{s} = 5.02~\mathrm{TeV}$. The fraction of the jet transverse momentum $p_{\rm T,jet}$ taken by the ${\rm J}\hspace{-.08em}/\hspace{-.14em}\psi$ is measured for both prompt and nonprompt ${\rm J}\hspace{-.08em}/\hspace{-.14em}\psi$ mesons. [...]
CMS-PAS-HIN-18-012.- Geneva : CERN, 2018 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-a: PDF; Figure_004-b: PDF; Figure_005-a: PDF; Figure_005-b: PDF; Fulltext in PDF: PDF;

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2018-05-15
18:06
Measurement of the radial profile of $D^{0}$ mesons in jets produced in pp and PbPb collisions at 5.02 TeV /CMS Collaboration
The first measurement of the radial distributions of $D^{0}$ mesons in jets in PbPb and pp collisions is presented. Data samples of PbPb and pp collisions at a nucleon-nucleon center-of-mass energy of $\sqrt{s_{NN}}=5.02$ $\mathrm{TeV}$, corresponding to integrated luminosities of 404 $\mu \rm b^{-1}$ and 27.4 $\rm p b^{-1}$, respectively, are recorded by the CMS detector at the LHC. [...]
CMS-PAS-HIN-18-007.- Geneva : CERN, 2018 Figure_001-a: PDF; Figure_001-b: PDF; Fulltext in PDF: PDF;

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2018-05-15
17:33
Studies of beauty suppression via measurements of nonprompt D0 mesons in PbPb collisions at sqrt(sNN)=5.02 TeV /CMS Collaboration
The transverse momentum spectra of $\mathrm{D^0}$ mesons from b hadron decays are measured in pp and PbPb collisions at a nucleon-nucleon center of mass energy of 5.02 $\mathrm{TeV}$ with the CMS detector at the LHC. The measurement is performed in the $\mathrm{D^0}$ $p_{\rm{T}}$ range of 2--100 ${\rm Ge\hspace{-.08em}V\hspace{-0.16em}}/\hspace{-0.08em}c$ and in the rapidity range of $|\mathrm{y}|<1$. [...]
CMS-PAS-HIN-16-016.- Geneva : CERN, 2018 Figure_001: PDF; Figure_002: PDF; Figure_003: PDF; Fulltext in PDF: PDF;

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2018-05-15
16:26
Observation of prompt $\mathrm{J}\hspace{-.08em}/\hspace{-.14em}\psi$ meson elliptic flow in high-multiplicity pPb collisions at $\sqrt{s_{_{\mathrm{NN}}}} = 8.16~\mathrm{TeV}$ /CMS Collaboration
The measurement of the elliptic flow of prompt $\mathrm{J}\hspace{-.08em}/\hspace{-.14em}\psi$ mesons in high-multiplicity pPb collisions is reported using a data sample collected by the CMS experiment, at a nucleon-nucleon center-of-mass energy $\sqrt{s_{_{\mathrm{NN}}}} = 8.16~\mathrm{TeV}$. The $\mathrm{J}\hspace{-.08em}/\hspace{-.14em}\psi$ mesons are reconstructed using the dimuon channel with both muons detected in a forward rapidity region with either $-2.86 < y_{\rm cm} < -1.86$ or $0.94 < y_{\rm cm}< 1.94$. [...]
CMS-PAS-HIN-18-010.- Geneva : CERN, 2018 Figure_001: PDF; Figure_002: PDF; Figure_003: PDF; Fulltext in PDF: PDF;

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2018-05-15
15:59
Measurement of the $\mathrm{B}_{s}^{0}$ meson nuclear modification factor in PbPb collisions at $\sqrt{\smash[b]{s_{_{\mathrm{NN}}}}} = 5.02\,\mathrm{Te\hspace{-1pt}V}$ /CMS Collaboration
The production cross sections of $\mathrm{B}_{s}^{0}$ mesons and charge conjugates are measured in pp and PbPb collisions via the exclusive decay channel $\mathrm{B}_{s}^{0}\to\mathrm{J}\hspace{-1pt}/\hspace{-1pt}\psi\hspace{2pt}\phi\to\mu^{+}\mu^{-}\mathrm{K}^{+}\mathrm{K}^{-}$ at a center-of-mass energy $\sqrt{\smash[b]{s_{_{\mathrm{NN}}}}} = 5.02\,\mathrm{Te\hspace{-1pt}V}$ per nucleon pair and within the rapidity range ($|y|<2.4$) using the CMS detector at the LHC. The proton-proton (pp) measurement is performed as a function of transverse momentum of the $\mathrm{B}_{s}^{0}$ meson in the range of 7 to 50$\hspace{2pt}\mathrm{Ge\hspace{-1pt}V}\hspace{-2pt}/\hspace{-1pt}c$ and is compared to the predictions of next-to-leading order perturbative calculations. [...]
CMS-PAS-HIN-17-008.- Geneva : CERN, 2018 Figure_001-a: PDF; Figure_001-b: PDF; Figure_002-a: PDF; Figure_002-b: PDF; Figure_003: PDF; Figure_004-a: PDF; Figure_004-b: PDF; Figure_005: PDF; Fulltext in PDF: PDF;

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2018-05-15
15:55
Jet shapes for isolated photon-tagged jets in PbPb and pp collisions at $\sqrt{s_\mathrm{NN}}=5.02~\mathrm{TeV}$ /CMS Collaboration
The modification of jet shapes in PbPb collision, relative to those in pp collision, is studied for jets associated with an isolated photon, using data collected with the CMS detector at the CERN LHC at a nucleon-nucleon center-of-mass energy of $5.02~\mathrm{TeV}$. Jet shapes are constructed in annuli around the axes of jets of transverse momentum $p_\mathrm{T}^\mathrm{jet} > 30~{\rm Ge\hspace{-.08em}V\hspace{-0.16em}}/\hspace{-0.08em}c $ that are associated with an isolated photon of $p_\mathrm{T}^\gamma > 60~{\rm Ge\hspace{-.08em}V\hspace{-0.16em}}/\hspace{-0.08em}c $, using charged particles of $p_\mathrm{T}^\mathrm{trk} > 1~{\rm Ge\hspace{-.08em}V\hspace{-0.16em}}/\hspace{-0.08em}c $. [...]
CMS-PAS-HIN-18-006.- Geneva : CERN, 2018 Figure_001: PDF; Fulltext in PDF: PDF;

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2018-05-15
15:47
Charged particle angular correlations in XeXe collision at $\sqrt{s_{NN}} = 5.44$ TeV /CMS Collaboration
Azimuthal correlations of charged particles in xenon-xenon collisions at $ \sqrt{s_{_{\rm NN}}} =$ 5.44 TeV are studied using data collected by the CMS experiment at the CERN LHC. The $v_{2}$, $v_{3}$, and $v_{4}$ Fourier coefficients that characterize the azimuthal behavior are obtained using two-particle correlations, the scalar product method and the multiparticle cumulant method. [...]
CMS-PAS-HIN-18-001.- Geneva : CERN, 2018 Figure_001: PDF; Figure_002: PDF; Figure_003: PDF; Figure_004: PDF; Figure_005: PDF; Figure_006: PDF; Figure_007: PDF; Figure_008: PDF; Figure_009: PDF; Figure_010: PDF; Fulltext in PDF: PDF;

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2018-05-15
13:10
Measurement of correlated azimuthal anisotropy Fourier harmonics with subevent cumulants in pPb collisions at 8.16 TeV /CMS Collaboration
Event-by-event correlations of azimuthal anisotropy Fourier coefficients ($v_n$) in 8.16 TeV pPb data are extracted using a subevent four-particle cumulant technique with the CMS experiment at the LHC. Each combination of four particles is required to fall into two, three or four distinct subevents within the full pseudorapidity range from -2.4 to 2.4 using tracks with transverse momentum between 0.3 and 3.0 GeV/c. [...]
CMS-PAS-HIN-18-015.- Geneva : CERN, 2018 Figure_001: PDF; Figure_002: PDF; Fulltext in PDF: PDF;

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