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CMS Physics Analysis Summaries

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2020-01-10
10:58
Combined Higgs boson production and decay measurements with up to 137 fb-1 of proton-proton collision data at sqrts = 13 TeV /CMS Collaboration
Combined measurements of the production and decay rates of the Higgs boson, its couplings to vector bosons and fermions, and interpretations in the effective field theory framework are presented. The analysis uses the LHC proton-proton collision data set recorded with the CMS detector at $\sqrt{s}=13\,\mathrm{TeV}$ in 2016, 2017, and 2018, corresponding to an integrated luminosity of up to $137\,\mathrm{fb}^{-1}$, depending on the decay channel. [...]
CMS-PAS-HIG-19-005.- Geneva : CERN, 2020 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_003-c: 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: PDF; Figure_007: PDF; Figure_008: PDF; Figure_009-a: PDF; Figure_009-b: PDF; Figure_010: PDF; Figure_011-a: PDF; Figure_011-b: PDF; Figure_011-c: PDF; Figure_011-d: PDF; Figure_012-a: PDF; Figure_012-b: PDF; Figure_012-c: PDF; Figure_013: PDF; Fulltext in PDF: PDF;

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2019-11-29
12:47
Search for a light charged Higgs boson in the H$^{\pm} \rightarrow$ cs channel at 13 TeV /CMS Collaboration
A search is conducted for a low-mass charged Higgs boson produced in a top quark decay and subsequently decaying into a charm and an antistrange quark. The data sample was recorded in proton-proton collisions at $\sqrt{s}=13~\mathrm{TeV}$ by the CMS experiment at the LHC and corresponds to an integrated luminosity of $35.9~\mathrm{fb}^{-1}$. [...]
CMS-PAS-HIG-18-021.- Geneva : CERN, 2019 Figure_001: 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_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; Fulltext in PDF: PDF;

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2019-11-19
09:42
Measurement of prompt $\rm{ D_{s}^{+}}$ production in pp and PbPb collisions at $\sqrt{s_{_{\text{NN}}}}$ = 5.02 TeV /CMS Collaboration
The transverse momentum ($p_{T}$) spectra of prompt $\rm{ D_{s}^{+}}$ mesons and charge conjugates are measured in pp and PbPb collisions at a center-of-mass energy of 5.02 TeV per nucleon pair using the CMS detector at the LHC. The measurement is performed through the ${\rm D_{s}^{+}}$ $\to$ $\phi$$\pi^{+}$ $\to$ $\rm{K^{+}K^{-}}$$\pi^{+}$ decay channels with the $\rm{ D_{s}^{+}}$ rapidity range $|y| < 1.0 $. [...]
CMS-PAS-HIN-18-017.- Geneva : CERN, 2019 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; Figure_005-a: PDF; Figure_005-b: PDF; Fulltext in PDF: PDF;

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2019-11-13
15:22
Extraction of CKM matrix elements in single top quark $t$-channel events in proton-proton collisions at $\sqrt{s} = 13$ TeV /CMS Collaboration
This note presents a model-independent extraction of the modulus of the Cabibbo Kobayashi Maskawa matrix elements $\mathrm{V_{\mathrm{tb}}}$, $\mathrm{V_{\mathrm{td}}}$, and $\mathrm{V_{\mathrm{ts}}}$ using an event sample enriched in single top quark $t$-channel events. The analysis uses proton-proton collisions data from the LHC collected during 2016 by the CMS experiment at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 35.9 fb$^{\mathrm{-1}}$. [...]
CMS-PAS-TOP-17-012.- Geneva : CERN, 2019 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_002-c: PDF; Figure_002-d: 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_004-d: PDF; Figure_005-a: PDF; Figure_005-b: PDF; Figure_005-c: PDF; Figure_005-d: PDF; Figure_006-a: PDF; Figure_006-b: PDF; Figure_006-c: PDF; Figure_006-d: PDF; Figure_006-e: PDF; Figure_006-f: PDF; Fulltext in PDF: PDF;

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2019-11-08
11:06
Nuclear modification factor of isolated photons in PbPb collisions at $\sqrt{s_{_{\mathrm{NN}}}} = 5.02~\mathrm{TeV}$ /CMS Collaboration
The transverse energy ($E^{\gamma}_\text{T}$) spectra and the nuclear modification factors ($R_{\mathrm{AA}}$) of isolated photons are analyzed using proton-proton (pp) and lead-lead (PbPb) collisions at $\sqrt{s_{_{\mathrm{NN}}}} = 5.02~\mathrm{TeV}$. The data were collected using the CMS detector at the CERN LHC with corresponding integrated luminosities of $404~\mu\mathrm{b}^{-1}$ and $27.4~\mathrm{pb}^{-1}$ for PbPb and pp data, respectively. [...]
CMS-PAS-HIN-18-016.- Geneva : CERN, 2019 Figure_001: PDF; Figure_002: PDF; Figure_003: PDF; Figure_004: PDF; Figure_005: PDF; Figure_006: PDF; Fulltext in PDF: PDF;

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2019-11-07
22:48
Nuclear modification of $\Upsilon$ states in pPb collisions at $\sqrt{s_\mathrm{NN}} = 5.02~\mathrm{TeV}$ /CMS Collaboration
Production cross sections of $\Upsilon(\mathrm{1S})$, $\Upsilon(\mathrm{2S})$, and $\Upsilon(\mathrm{3S})$ states decaying into $\mu^{+}\mu^{-}$ in proton-lead (pPb) collisions are reported using data collected by the CMS experiment at $\sqrt{s_\mathrm{NN}}=5.02~\mathrm{TeV}$. Nuclear modification factors $R_\mathrm{pPb}$ for all three $\Upsilon$ states are obtained using measured proton-proton (pp) cross sections at the same collision energy. [...]
CMS-PAS-HIN-18-005.- Geneva : CERN, 2019 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; Figure_005-c: PDF; Figure_006-a: PDF; Figure_006-b: PDF; Figure_007-a: PDF; Figure_007-b: PDF; Figure_008: PDF; Figure_009-a: PDF; Figure_009-b: PDF; Fulltext in PDF: PDF;

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2019-11-07
10:55
Search for strong electromagnetic fields in PbPb collisions at 5.02 TeV via azimuthal anisotropy of $\mathrm{D^0}$ and $\mathrm{\overline{D}^0}$ mesons /CMS Collaboration
Motivated by the search for strong electromagnetic fields created in PbPb collisions, the first measurement of the $v_2$ difference ($\Delta v_2$) between $\mathrm{D^0}$ and $\mathrm{\overline{D}^0}$ is presented as a function of rapidity. The result for the rapidity-averaged $v_2$ difference is found to be $\left\langle\Delta v_2 \right\rangle = 0.001 \pm 0.001 \mathrm{(stat)} \pm 0.003 \mathrm{(syst)}$, consistent with zero within experimental uncertainties. [...]
CMS-PAS-HIN-19-008.- Geneva : CERN, 2019 Figure_001: PDF; Figure_002: PDF; Figure_003: PDF; Figure_004-a: PDF; Figure_004-b: PDF; Figure_005: PDF; Fulltext in PDF: PDF;

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2019-11-06
22:36
Studies of charm and beauty long-range correlations in pp and pPb collisions /CMS Collaboration
Studies of collective long-range (large $\eta$ gap) correlations involving open charm and beauty hadrons in pp and pPb collisions are presented, using data samples collected by the CMS experiment with center-of-mass energies of 13 and 8.16 TeV, respectively. The elliptic flow harmonics ($v_2$) of prompt and nonprompt $D^{0}$ mesons (from beauty hadron decays) are extracted from long-range two-particle azimuthal correlations, with respect to inclusive charged particles. [...]
CMS-PAS-HIN-19-009.- Geneva : CERN, 2019 Figure_001: PDF; Figure_002-a: PDF; Figure_002-b: PDF; Figure_003-a: PDF; Figure_003-b: PDF; Figure_004: PDF; Figure_005: PDF; Figure_006: PDF; Fulltext in PDF: PDF;

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2019-11-06
13:41
Evidence for top quark production in nucleus-nucleus collisions /CMS Collaboration
Evidence for the production of top quarks in heavy ion collisions is reported in a data sample of lead-lead collisions recorded in 2018 by the CMS experiment at a nucleon-nucleon center-of-mass energy of $\sqrt{\smash[b]{s_{_{\mathrm{NN}}}}} = 5.02$ TeV, corresponding to an integrated luminosity of $1.7\pm0.1\,\text{nb}^{-1}$. Top quark pair ($\mathrm{t\bar{t}}$) production is measured in events with two opposite-sign high-$p_{\mathrm{T}}$ isolated leptons ($\ell^\pm\ell^\mp =\,\mathrm{e}^{+} \mathrm{e}^{-},\,\mu^{+} \mu^{-},\,\text{and}\,\mathrm{e}^{\pm} \mu^{\mp}$). [...]
CMS-PAS-HIN-19-001.- Geneva : CERN, 2019 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_003-a: PDF; Figure_003-b: PDF; Figure_003-c: PDF; Figure_004-a: PDF; Figure_004-b: PDF; Figure_004-c: PDF; Figure_005: PDF; Fulltext in PDF: PDF;

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2019-11-05
20:01
Evidence for $\chi_{c1}$(3872) in PbPb collisions and studies of its prompt production at $\sqrt{\smash[b]{s_{_{\mathrm{NN}}}}}=5.02$ TeV /CMS Collaboration
The first evidence for $\chi_{c1}$(3872) in relativistic heavy ion collisions is reported. Prompt $\chi_{c1}$(3872) production is studied in PbPb collisions at a center-of-mass energy of $\sqrt{\smash[b]{s_{_{\mathrm{NN}}}}} = 5.02$ TeV per nucleon pair, using the decay chain $\chi_{c1}$(3872)$\rightarrow {\rm J}/\psi\pi^+\pi^-\rightarrow \mu^+\mu^-\pi^+\pi^-$. [...]
CMS-PAS-HIN-19-005.- Geneva : CERN, 2019 Figure_001: PDF; Figure_002: PDF; Fulltext in PDF: PDF;

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