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CMS Physics Analysis Summaries

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2016-05-27
09:52
High-$p_\mathrm{T}$ track $v_{n}$ harmonics in PbPb collisions at $5.02~\mathrm{TeV}$ /CMS Collaboration
The Fourier coefficients (n = 2,3) of the azimuthal distributions of charged particles produced in PbPb collisions at $\sqrt{s_{NN}} = 5.02~\mathrm{TeV}$ is measured with the CMS detector at the LHC over an extended transverse momentum ($p_\mathrm{T}$) range up to approximately $100~\mathrm{GeV}/c$. The data cover both the low-$p_\mathrm{T}$ region ($1 < p_\mathrm{T} < 3~\mathrm{GeV}/c$) associated with hydrodynamic flow phenomena and the high-$p_\mathrm{T}$ region where anisotropic azimuthal distributions may reflect the path-length dependence of parton energy loss in the created medium. [...]
CMS-PAS-HIN-15-014.- Geneva : CERN, 2016 Figure_001: PDF; Figure_002: PDF; Figure_003: PDF; Figure_004: PDF; Fulltext in PDF: PDF;

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2016-05-27
09:23
Study of Z+jet correlations in PbPb and pp collisions at $\sqrt{s_{\rm NN}} = 5.02~\mathrm{TeV}$ /CMS Collaboration
The production of Z+jet pairs is measured for the first time in pp and central PbPb collisions at a centre-of-mass energy of 5.02 TeV per nucleon pair, using data samples collected by the CMS experiment at the LHC. The Z+jet azimuthal angle correlations and $p_T$ imbalance are analysed for events containing a Z boson with transverse momentum $p_\mathrm{T}^\mathrm{Z} > 60~\mathrm{GeV}/c$ and an associated jet with $p_\mathrm{T}^\mathrm{Jet} > 30~\mathrm{GeV}/c$. [...]
CMS-PAS-HIN-15-013.- Geneva : CERN, 2016 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-a: PDF; Figure_005-b: PDF; Figure_006-a: PDF; Figure_006-b: PDF; Fulltext in PDF: PDF;

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2016-05-24
15:37
Measurement of the charged particle nuclear modification factor in PbPb collisions at $\sqrt{s_{\rm NN}}=5.02~\mathrm{TeV}$ /CMS Collaboration
The nuclear modification factor, $R_{\rm AA}$, of charged particles produced in the $|\eta|<1$ pseudorapidity region is measured at $\sqrt{s_{\rm NN}}=5.02~\mathrm{TeV}$ using $404~\mu\mathrm{b}^{-1}$ of PbPb and $25.8~\mathrm{pb}^{-1}$ of pp data collected by the CMS experiment at the end of 2015. The $R_{\rm AA}$ is presented in several bins of collision centrality, over the transverse momentum range of $0.7-400~\mathrm{GeV}$. [...]
CMS-PAS-HIN-15-015.- Geneva : CERN, 2016 Figure_001-a: PDF; Figure_001-b: 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_003-e: PDF; Figure_003-f: PDF; Figure_004-a: PDF; Figure_004-b: PDF; Figure_005: PDF; Figure_006: PDF; Fulltext in PDF: PDF;

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2016-05-23
22:16
Combination of cross-section measurements of associated production of a single top quark and a W boson at $\sqrt{s} = 8~\mathrm{TeV}$ with the ATLAS and CMS experiments /CMS Collaboration
A combination of cross-section measurements for the associated production of a top quark and a W boson in proton-proton collisions at $\sqrt{s}=8~\mathrm{TeV}$ by the ATLAS and CMS experiments is presented. The two measurements are based on integrated luminosities of $20.3~\mathrm{fb}^{-1}$ and $12.2~\mathrm{fb}^{-1}$, respectively. [...]
CMS-PAS-TOP-15-019.- Geneva : CERN, 2016 Figure_001: PDF; Figure_002: PDF; Fulltext in PDF: PDF;

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2016-05-23
08:45
Observation of particle-species dependence and collectivity in azimuthal correlations of pp collisions at the LHC /CMS Collaboration
Measurements of two- and multi-particle angular correlations in pp collisions at $\sqrt{s} = 5$, $7$, and $13~\mathrm{TeV}$ are presented as a function of charged-particle multiplicity. The data, corresponding to an integrated luminosity of $1.0~\mathrm{pb}^{-1}$ ($5~\mathrm{TeV}$), $6.2~\mathrm{pb}^{-1}$ ($7~\mathrm{TeV}$), and $0.7~\mathrm{pb}^{-1}$ ($13~\mathrm{TeV}$), were collected using the CMS detector at the LHC. [...]
CMS-PAS-HIN-16-010.- Geneva : CERN, 2016 Figure_001-a: PDF; Figure_001-b: PDF; Figure_002: PDF; Figure_003: PDF; Figure_004: PDF; Figure_005: PDF; Figure_006: PDF; Figure_007: PDF; Figure_008: PDF; Figure_009-a: PDF; Figure_009-b: PDF; Figure_010: PDF; Fulltext in PDF: PDF;

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2016-05-19
22:32
Observation of $\Upsilon(1S)$ pair production at CMS /CMS Collaboration
The simultaneous production of two $\Upsilon(1S)$ mesons in proton-proton collisions is observed by CMS at $\sqrt s$ = 8 TeV at LHC in a data sample corresponding to an integrated luminosity of 20.7 fb$^{-1}$. The statistical significance is well in excess of 5 standard deviations. [...]
CMS-PAS-BPH-14-008.- Geneva : CERN, 2016 Figure_001: PDF; Figure_002-a: PDF; Figure_002-b: PDF; Fulltext in PDF: PDF;

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2016-05-19
22:31
Combination of diboson resonance searches at 8 and 13 TeV /CMS Collaboration
The statistical combination of searches for massive resonances decaying to pairs of W, Z, and Higgs bosons based on pp collision data collected by the CMS experiment at the CERN LHC is presented. The data are taken at a centre-of-mass energy of 8 and 13 TeV and correspond to an integrated luminosity of 19.7fb$^{-1}$ and 2.6$^{-1}$ respectively. The results are interpreted in the context of a heavy vector triplet model that mimics the properties of composite Higgs models predicting a W' and a Z' decaying to WZ, WH, WW, and ZH and a model with a "bulk" graviton that decays into WW and ZZ. Combined cross section limits as a function of resonance mass are obtained. The combined significance of potential resonances of 1.8--2 TeV are evaluated in each signal hypothesis..
CMS-PAS-B2G-16-007.- Geneva : CERN, 2016 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; Figure_004: PDF; Figure_005-a: PDF; Figure_005-b: PDF; Figure_005-c: PDF; Figure_006: PDF; Figure_007: PDF; Figure_008-a: PDF; Figure_008-b: PDF; Figure_009: PDF; Fulltext in PDF: PDF;

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2016-05-17
17:39
Determination of the normalised invariant mass distribution of $\mathrm{t\bar{t}}+$jet and extraction of the top quark mass /CMS Collaboration
A measurement of the top quark mass from top quark pair ($\mathrm{t\bar{t}}$) events produced in association with additional hard jets is performed in pp collisions at $\sqrt{s}=8$ TeV with the CMS detector using data recorded in 2012, corresponding to an integrated luminosity of 19.7 fb$^{-1}$. The mass is extracted from the normalised invariant mass distribution of the $\mathrm{t\bar{t}}\text{+jet}$ system at reconstruction level as well as from the related normalised differential cross section. [...]
CMS-PAS-TOP-13-006.- Geneva : CERN, 2016 Figure_001-a: PDF; Figure_001-b: PDF; Figure_001-c: 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_006: PDF; Figure_007: PDF; Fulltext in PDF: PDF;

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2016-05-07
11:10
Measurement of the differential cross section for $t$-channel single-top-quark production at $\sqrt{s}=13~\mathrm{TeV}$ /CMS Collaboration
A measurement of differential cross sections for $t$-channel single-top-quark production in proton-proton collisions at a centre-of-mass energy of 13 TeV is presented. The cross sections are measured as functions of the transverse momentum and the absolute value of the rapidity of the top quark. [...]
CMS-PAS-TOP-16-004.- Geneva : CERN, 2016 Figure_001-a: PDF; Figure_001-b: PDF; Figure_002-a: PDF; Figure_002-b: PDF; Figure_002-c: PDF; Figure_002-d: PDF; Figure_003-a: PDF; Figure_003-b: 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; Fulltext in PDF: PDF;

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2016-04-27
12:35
Search for high-mass resonances and quantum black holes in the $e\mu$ final state in proton-proton collisions at $\sqrt{s}=13~\mathrm{TeV}$ /CMS Collaboration
A search for heavy resonances decaying into $e\mu$ final states has been performed using an integrated luminosity of $2.7~\mathrm{fb}^{-1}$ of $13~\mathrm{TeV}$ proton-proton collision data recorded with the CMS detector at the LHC. No evidence for physics beyond the Standard Model is observed in the invariant mass spectrum of selected $e\mu$ pairs. [...]
CMS-PAS-EXO-16-001.- Geneva : CERN, 2016 Figure_001-a: PDF; Figure_001-b: PDF; Figure_002-a: PDF; Figure_002-b: PDF; Figure_003: PDF; Fulltext in PDF: PDF;

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