14 research outputs found

    Association of FGFR4 Genetic Polymorphisms with Prostate Cancer Risk and Prognosis

    No full text
    Abstract The fibroblast growth factor receptor 4 (FGFR4) is thought to be involved in many critical cellular processes and has been associated with prostate cancer risk. Four single nucleotide polymorphisms within or near FGFR4 were analysed in a population-based study of 1458 prostate cancer patients and 1352 age-matched controls. We found no evidence to suggest that any of the FGFR4 SNP genotypes were associated with prostate cancer risk or with disease aggressiveness, Gleason score or stage. A weak association was seen between rs351855 and prostate cancer-specific mortality. Subset analysis of cases that had undergone radical prostatectomy revealed an association between rs351855 and prostate cancer risk. While our results confirm an association between FGFR4 and prostate cancer risk in radical prostatectomy cases, they suggest that the role of FGFR4 in disease risk and outcomes at a population-based level appears to be minor

    Search for narrow resonances in the <math display="inline"><mi>b</mi></math>-tagged dijet mass spectrum in proton-proton collisions at <math display="inline"><msqrt><mi>s</mi></msqrt><mo>=</mo><mn>13</mn><mtext> </mtext><mtext> </mtext><mi>TeV</mi></math>

    No full text
    International audienceA search is performed for narrow resonances decaying to final states of two jets, with at least one jet originating from a b quark, in proton-proton collisions at s=13  TeV. The data set corresponds to an integrated luminosity of 138  fb-1 collected with the CMS detector at the LHC. Jets originating from energetic b hadrons are identified through a b-tagging algorithm that utilizes a deep neural network or the presence of a muon inside a jet. The invariant mass spectrum of jet pairs is well described by a smooth parametrization and no evidence for the production of new particles is observed. Upper limits on the production cross section are set for excited b quarks and other resonances decaying to dijet final states containing b quarks. These limits exclude at 95% confidence level models of Zâ€Č bosons with masses from 1.8 TeV to 2.4 TeV and of excited b quarks with masses from 1.8 TeV to 4.0 TeV. This is the most stringent exclusion of excited b quarks to date

    Strange hadron collectivity in pPb and PbPb collisions

    No full text
    International audienceThe collective behavior of KS0 {\textrm{K}}_{\textrm{S}}^0 and Λ/Λ‟ \Lambda /\overline{\Lambda} strange hadrons is studied by measuring the elliptic azimuthal anisotropy (v2_{2}) using the scalar-product and multiparticle correlation methods. Proton-lead (pPb) collisions at a nucleon-nucleon center-of-mass energy sNN \sqrt{s_{\textrm{NN}}} = 8.16 TeV and lead-lead (PbPb) collisions at sNN \sqrt{s_{\textrm{NN}}} = 5.02 TeV collected by the CMS experiment at the LHC are investigated. Nonflow effects in the pPb collisions are studied by using a subevent cumulant analysis and by excluding events where a jet with transverse momentum greater than 20 GeV is present. The strange hadron v2_{2} values extracted in pPb collisions via the four- and six-particle correlation method are found to be nearly identical, suggesting the collective behavior. Comparisons of the pPb and PbPb results for both strange hadrons and charged particles illustrate how event-by-event flow fluctuations depend on the system size.[graphic not available: see fulltext

    Measurement of the Higgs boson inclusive and differential fiducial production cross sections in the diphoton decay channel with pp collisions at s \sqrt{s} = 13 TeV

    No full text
    International audienceThe measurements of the inclusive and differential fiducial cross sections of the Higgs boson decaying to a pair of photons are presented. The analysis is performed using proton-proton collisions data recorded with the CMS detector at the LHC at a centre-of-mass energy of 13 TeV and corresponding to an integrated luminosity of 137 fb−1^{−1}. The inclusive fiducial cross section is measured to be σfid=73.4−5.3+5.4(stat)−2.2+2.4(syst) {\sigma}_{\textrm{fid}}={73.4}_{-5.3}^{+5.4}{\left(\textrm{stat}\right)}_{-2.2}^{+2.4}\left(\textrm{syst}\right) fb, in agreement with the standard model expectation of 75.4 ± 4.1 fb. The measurements are also performed in fiducial regions targeting different production modes and as function of several observables describing the diphoton system, the number of additional jets present in the event, and other kinematic observables. Two double differential measurements are performed. No significant deviations from the standard model expectations are observed.[graphic not available: see fulltext

    Searches for additional Higgs bosons and for vector leptoquarks in ττ\tau\tau final states in proton-proton collisions at s=\sqrt{s} = 13 TeV

    No full text
    Three searches are presented for signatures of physics beyond the standard model (SM) in ττ\tau\tau final states in proton-proton collisions at the LHC, using a data sample collected with the CMS detector at s=\sqrt{s} = 13 TeV, corresponding to an integrated luminosity of 138 fb−1^{-1}. Upper limits at 95% confidence level (CL) are set on the products of the branching fraction for the decay into τ\tau leptons and the cross sections for the production of a new boson ϕ\phi, in addition to the H(125) boson, via gluon fusion (ggϕ\phi) or in association with b quarks, ranging from O{\mathcal{O}}(10 pb) for a mass of 60 GeV to 0.3 fb for a mass of 3.5 TeV each. The data reveal two excesses for ggϕ\phi production with local pp-values equivalent to about three standard deviations at mϕ={m_{\phi}} = 0.1 and 1.2 TeV. In a search for tt-channel exchange of a vector leptoquark U1_{1}, 95% CL upper limits are set on the dimensionless U1_{1} leptoquark coupling to quarks and τ\tau leptons ranging from 1 for a mass of 1 TeV to 6 for a mass of 5 TeV, depending on the scenario. In the interpretations of the Mh125{M_{\mathrm{h}}^{125}} and Mh, EFT125{M_{\mathrm{h},\,\text{EFT}}^{125}} minimal supersymmetric SM benchmark scenarios, additional Higgs bosons with masses below 350 GeV are excluded at 95% CL.Three searches are presented for signatures of physics beyond the standard model (SM) in ττ final states in proton-proton collisions at the LHC, using a data sample collected with the CMS detector at s \sqrt{s} = 13 TeV, corresponding to an integrated luminosity of 138 fb−1^{−1}. Upper limits at 95% confidence level (CL) are set on the products of the branching fraction for the decay into τ leptons and the cross sections for the production of a new boson ϕ, in addition to the H(125) boson, via gluon fusion (ggϕ) or in association with b quarks, ranging from O \mathcal{O} (10 pb) for a mass of 60 GeV to 0.3 fb for a mass of 3.5 TeV each. The data reveal two excesses for ggϕ production with local p-values equivalent to about three standard deviations at mϕ_{ϕ} = 0.1 and 1.2 TeV. In a search for t-channel exchange of a vector leptoquark U1_{1}, 95% CL upper limits are set on the dimensionless U1_{1} leptoquark coupling to quarks and τ leptons ranging from 1 for a mass of 1 TeV to 6 for a mass of 5 TeV, depending on the scenario. In the interpretations of the Mh125 {M}_{\textrm{h}}^{125} and Mh,EFT125 {M}_{\textrm{h},\textrm{EFT}}^{125} minimal supersymmetric SM benchmark scenarios, additional Higgs bosons with masses below 350 GeV are excluded at 95% CL.[graphic not available: see fulltext]Three searches are presented for signatures of physics beyond the standard model (SM) in ττ\tau\tau final states in proton-proton collisions at the LHC, using a data sample collected with the CMS detector at s\sqrt{s} = 13 TeV, corresponding to an integrated luminosity of 138 fb−1^{-1}. Upper limits at 95% confidence level (CL) are set on the products of the branching fraction for the decay into τ\tau leptons and the cross sections for the production of a new boson ϕ\phi, in addition to the H(125) boson, via gluon fusion (ggϕ\phi) or in association with b quarks, ranging from O\mathcal{O}(10 pb) for a mass of 60 GeV to 0.3 fb for a mass of 3.5 TeV each. The data reveal two excesses for ggϕ\phi production with local pp-values equivalent to about three standard deviations at mϕm_\phi = 0.1 and 1.2 TeV. In a search for tt-channel exchange of a vector leptoquark U1_1, 95% CL upper limits are set on the dimensionless U1_1 leptoquark coupling to quarks and τ\tau leptons ranging from 1 for a mass of 1 TeV to 6 for a mass of 5 TeV, depending on the scenario. In the interpretations of the Mh125M_\mathrm{h}^{125} and Mh,EFT125M_\mathrm{h, EFT}^{125} minimal supersymmetric SM benchmark scenarios, additional Higgs bosons with masses below 350 GeV are excluded at 95% CL

    Measurement of inclusive and differential cross sections for single top quark production in association with a W boson in proton-proton collisions at s \sqrt{s} = 13 TeV

    No full text
    International audienceMeasurements of the inclusive and normalised differential cross sections are presented 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 TeV. The data used were recorded with the CMS detector at the LHC during 2016–2018, and correspond to an integrated luminosity of 138 fb−1^{−1}. Events containing one electron and one muon in the final state are analysed. For the inclusive measurement, a multivariate discriminant, exploiting the kinematic properties of the events is used to separate the signal from the dominant tt‟ \textrm{t}\overline{\textrm{t}} background. A cross section of 79.2±0.9(stat)−8.0+7.7(syst)±1.2(lumi) 79.2\pm 0.9{\left(\textrm{stat}\right)}_{-8.0}^{+7.7}\left(\textrm{syst}\right)\pm 1.2\left(\textrm{lumi}\right) pb is obtained, consistent with the predictions of the standard model. For the differential measurements, a fiducial region is defined according to the detector acceptance, and the requirement of exactly one jet coming from the fragmentation of a bottom quark. The resulting distributions are unfolded to particle level and agree with the predictions at next-to-leading order in perturbative quantum chromodynamics.[graphic not available: see fulltext

    Search for pair production of vector-like quarks in leptonic final states in proton-proton collisions at s \sqrt{s} = 13 TeV

    No full text
    A search is presented for vector-like T \mathrm{T} and B \mathrm{B} quark-antiquark pairs produced in proton-proton collisions at a center-of-mass energy of 13 TeV. Data were collected by the CMS experiment at the CERN LHC in 2016-2018, with an integrated luminosity of 138 fb−1 ^{-1} . Events are separated into single-lepton, same-sign charge dilepton, and multilepton channels. In the analysis of the single-lepton channel a multilayer neural network and jet identification techniques are employed to select signal events, while the same-sign dilepton and multilepton channels rely on the high-energy signature of the signal to distinguish it from standard model backgrounds. The data are consistent with standard model background predictions, and the production of vector-like quark pairs is excluded at 95% confidence level for T \mathrm{T} quark masses up to 1.54 TeV and B \mathrm{B} quark masses up to 1.56 TeV, depending on the branching fractions assumed, with maximal sensitivity to decay modes that include multiple top quarks. The limits obtained in this search are the strongest limits to date for TT‟ \mathrm{T} \overline{\mathrm{T}} production, excluding masses below 1.48 TeV for all decays to third generation quarks, and are the strongest limits to date for BB‟ \mathrm{B} \overline{\mathrm{B}} production with B \mathrm{B} quark decays to tW.A search is presented for vector-like T and B quark-antiquark pairs produced in proton-proton collisions at a center-of-mass energy of 13 TeV. Data were collected by the CMS experiment at the CERN LHC in 2016–2018, with an integrated luminosity of 138 fb−1^{−1}. Events are separated into single-lepton, same-sign charge dilepton, and multi-lepton channels. In the analysis of the single-lepton channel a multilayer neural network and jet identification techniques are employed to select signal events, while the same-sign dilepton and multilepton channels rely on the high-energy signature of the signal to distinguish it from standard model backgrounds. The data are consistent with standard model background predictions, and the production of vector-like quark pairs is excluded at 95% confidence level for T quark masses up to 1.54 TeV and B quark masses up to 1.56 TeV, depending on the branching fractions assumed, with maximal sensitivity to decay modes that include multiple top quarks. The limits obtained in this search are the strongest limits to date for TT‟ \textrm{T}\overline{\textrm{T}} production, excluding masses below 1.48 TeV for all decays to third generation quarks, and are the strongest limits to date for BB‟ \textrm{B}\overline{\textrm{B}} production with B quark decays to tW.[graphic not available: see fulltext]A search is presented for vector-like T and B quark-antiquark pairs produced in proton-proton collisions at a center-of-mass energy of 13 TeV. Data were collected by the CMS experiment at the CERN LHC in 2016-2018, with an integrated luminosity of 138 fb−1^{-1}. Events are separated into single-lepton, same-sign charge dilepton, and multilepton channels. In the analysis of the single-lepton channel a multilayer neural network and jet identification techniques are employed to select signal events, while the same-sign dilepton and multilepton channels rely on the high-energy signature of the signal to distinguish it from standard model backgrounds. The data are consistent with standard model background predictions, and the production of vector-like quark pairs is excluded at 95% confidence level for T quark masses up to 1.54 TeV and B quark masses up to 1.56 TeV, depending on the branching fractions assumed, with maximal sensitivity to decay modes that include multiple top quarks. The limits obtained in this search are the strongest limits to date for TT‟\mathrm{T\overline{T}} production, excluding masses below 1.48 TeV for all decays to third generation quarks, and are the strongest limits to date for BB‟\mathrm{B\overline{B}} production with B quark decays to tW

    Search for Higgs boson decays to a Z boson and a photon in proton-proton collisions at s \sqrt{s} = 13 TeV

    No full text
    International audienceResults are presented from a search for the Higgs boson decay H → ZÎł, where Z → ℓ+^{+}ℓ−^{−} with ℓ = e or ÎŒ. The search is performed using a sample of proton-proton (pp) collision data at a center-of-mass energy of 13 TeV, recorded by the CMS experiment at the LHC, corresponding to an integrated luminosity of 138 fb−1^{−1}. Events are assigned to mutually exclusive categories, which exploit differences in both event topology and kinematics of distinct Higgs production mechanisms to enhance signal sensitivity. The signal strength ÎŒ, defined as the product of the cross section and the branching fraction \left[\sigma \left(\textrm{pp}\to \textrm{H}\right)\mathcal{B}\left(\textrm{H}\to \textrm{Z}\upgamma \right)\right] relative to the standard model prediction, is extracted from a simultaneous fit to the ℓ+^{+}ℓ−^{−}Îł invariant mass distributions in all categories and is measured to be ÎŒ = 2.4 ± 0.9 for a Higgs boson mass of 125.38 GeV. The statistical significance of the observed excess of events is 2.7 standard deviations. This measurement corresponds to \left[\sigma \left(\textrm{pp}\to \textrm{H}\right)\mathcal{B}\left(\textrm{H}\to \textrm{Z}\upgamma \right)\right]=0.21\pm 0.08 pb. The observed (expected) upper limit at 95% confidence level on ÎŒ is 4.1 (1.8), where the expected limit is calculated under the background-only hypothesis. The ratio of branching fractions \mathcal{B}\left(\textrm{H}\to \textrm{Z}\upgamma \right)/\mathcal{B}\left(\textrm{H}\to \upgamma \upgamma \right) is measured to be 1.5−0.6+0.7 {1.5}_{-0.6}^{+0.7} , which agrees with the standard model prediction of 0.69 ± 0.04 at the 1.5 standard deviation level.[graphic not available: see fulltext

    Search for heavy resonances and quantum black holes in eÎŒ\mu, eτ\tau, and Ότ\mu\tau final states in proton-proton collisions at s\sqrt{s} = 13 TeV

    No full text
    A search is reported for heavy resonances and quantum black holes decaying into eÎŒ\mu, eτ\tau, and Ότ\mu\tau final states in proton-proton collision data recorded by the CMS experiment at the CERN LHC during 2016-2018 at s=\sqrt{s} = 13 TeV, corresponding to an integrated luminosity of 138 fb−1^{-1}. The eÎŒ\mu, eτ\tau, and Ότ\mu\tau invariant mass spectra are reconstructed, and no evidence is found for physics beyond the standard model. Upper limits are set at 95% confidence level on the product of the cross section and branching fraction for lepton flavor violating signals. Three benchmark signals are studied: resonant τ\tau sneutrino production in RR parity violating supersymmetric models, heavy Z' gauge bosons with lepton flavor violating decays, and nonresonant quantum black hole production in models with extra spatial dimensions. Resonant τ\tau sneutrinos are excluded for masses up to 4.2 TeV in the eÎŒ\mu channel, 3.7 TeV in the eτ\tau channel, and 3.6 TeV in the Ότ\mu\tau channel. A Z' boson with lepton flavor violating couplings is excluded up to a mass of 5.0 TeV in the eÎŒ\mu channel, up to 4.3 TeV in the eτ\tau channel, and up to 4.1 TeV in the Ότ\mu\tau channel. Quantum black holes in the benchmark model are excluded up to the threshold mass of 5.6 TeV in the eÎŒ\mu channel, 5.2 TeV in the eτ\tau channel, and 5.0 TeV in the Ότ\mu\tau channel. In addition, model-independent limits are extracted to allow comparisons with other models for the same final states and similar event selection requirements. The results of these searches provide the most stringent limits available from collider experiments for heavy particles that undergo lepton flavor violating decays.A search is reported for heavy resonances and quantum black holes decaying into eÎŒ, eτ, and Ότ final states in proton-proton collision data recorded by the CMS experiment at the CERN LHC during 2016–2018 at s \sqrt{s} = 13 TeV, corresponding to an integrated luminosity of 138 fb−1^{−1}. The eÎŒ, eτ, and Ότ invariant mass spectra are reconstructed, and no evidence is found for physics beyond the standard model. Upper limits are set at 95% confidence level on the product of the cross section and branching fraction for lepton flavor violating signals. Three benchmark signals are studied: resonant τ sneutrino production in R parity violating supersymmetric models, heavy Zâ€Č gauge bosons with lepton flavor violating decays, and nonresonant quantum black hole production in models with extra spatial dimensions. Resonant τ sneutrinos are excluded for masses up to 4.2TeV in the eÎŒ channel, 3.7TeV in the eτ channel, and 3.6TeV in the Ότ channel. A Zâ€Č boson with lepton flavor violating couplings is excluded up to a mass of 5.0TeV in the eÎŒ channel, up to 4.3Te V in the eτ channel, and up to 4.1TeV in the Ότ channel. Quantum black holes in the benchmark model are excluded up to the threshold mass of 5.6TeV in the eÎŒ channel, 5.2TeV in the eτ channel, and 5.0TeV in the Ότ channel. In addition, model-independent limits are extracted to allow comparisons with other models for the same final states and similar event selection requirements. The results of these searches provide the most stringent limits available from collider experiments for heavy particles that undergo lepton flavor violating decays.[graphic not available: see fulltext]A search is reported for heavy resonances and quantum black holes decaying into eÎŒ\mu, eτ\tau, and Ότ\mu\tau final states in proton-proton collision data recorded by the CMS experiment at the CERN LHC during 2016-2018 at s\sqrt{s} = 13 TeV, corresponding to an integrated luminosity of 138 fb−1^{-1}. The eÎŒ\mu, eτ\tau, and Ότ\mu\tau invariant mass spectra are reconstructed, and no evidence is found for physics beyond the standard model. Upper limits are set at 95% confidence level on the product of the cross section and branching fraction for lepton flavor violating signals. Three benchmark signals are studied: resonant τ\tau sneutrino production in RR parity violating supersymmetric models, heavy Z' gauge bosons with lepton flavor violating decays, and nonresonant quantum black hole production in models with extra spatial dimensions. Resonant τ\tau sneutrinos are excluded for masses up to 4.2 TeV in the eÎŒ\mu channel, 3.7 TeV in the eτ\tau channel, and 3.6 TeV in the Ότ\mu\tau channel. A Z' boson with lepton flavor violating couplings is excluded up to a mass of 5.0 TeV in the eÎŒ\mu channel, up to 4.3 TeV in the eτ\tau channel, and up to 4.1 TeV in the Ότ\mu\tau channel. Quantum black holes in the benchmark model are excluded up to the threshold mass of 5.6 TeV in the eÎŒ\mu channel, 5.2 TeV in the eτ\tau channel, and 5.0 TeV in the Ότ\mu\tau channel. In addition, model-independent limits are extracted to allow comparisons with other models for the same final states and similar event selection requirements. The results of these searches provide the most stringent limits available from collider experiments for heavy particles that undergo lepton flavor violating decays

    Search for nonresonant Higgs boson pair production in the four leptons plus two b jets final state in proton-proton collisions at s=\sqrt{s} = 13 TeV

    No full text
    The first search for nonresonant production of Higgs boson pairs (HH) with one H decaying into four leptons and the other into a pair of b quarks is presented, using proton-proton collisions recorded at a center-of-mass energy of s=\sqrt{s} = 13 TeV by the CMS experiment. The analyzed data correspond to an integrated luminosity of 138 fb−1^{-1}. A 95% confidence level upper limit of 32.4 is set on the signal strength modifier ÎŒ\mu, defined as the ratio of the observed HH production rate in the HH→ZZ∗bbˉ→4ℓbbˉ{\mathrm{H}\mathrm{H}} \to\mathrm{Z}\mathrm{Z}^{*}\mathrm{b}\mathrm{\bar{b}}\to 4\ell\mathrm{b}\mathrm{\bar{b}} decay channel to the standard model expectation. Possible modifications of the H trilinear coupling λHHH\lambda_\text{HHH} with respect to the standard model (SM) value are investigated. The coupling modifier Îșλ\kappa_{\lambda}, defined as λHHH\lambda_\text{HHH} divided by its SM prediction, is constrained to be within the observed (expected) range −-8.8 (−-9.8) <Îșλ< < \kappa_{\lambda} < 13.4 (15.0) at 95% confidence level.The first search for nonresonant production of Higgs boson pairs (HH) with one H decaying into four leptons and the other into a pair of b quarks is presented, using proton-proton collisions recorded at a center-of-mass energy of s \sqrt{s} = 13 TeV by the CMS experiment. The analyzed data correspond to an integrated luminosity of 138 fb−1^{−1}. A 95% confidence level upper limit of 32.4 is set on the signal strength modifier ÎŒ, defined as the ratio of the observed HH production rate in the HH→ZZ∗bb‟→4ℓbb‟ \textrm{HH}\to {\textrm{ZZ}}^{\ast}\textrm{b}\overline{\textrm{b}}\to 4\ell \textrm{b}\overline{\textrm{b}} decay channel to the standard model (SM) expectation. Possible modifications of the H trilinear coupling λHHH_{HHH} with respect to the SM value are investigated. The coupling modifier Îșλ_{λ}, defined as λHHH_{HHH} divided by its SM prediction, is constrained to be within the observed (expected) range −8.8 (−9.8) < Îșλ_{λ}< 13.4 (15.0) at 95% confidence level.[graphic not available: see fulltext]The first search for nonresonant production of Higgs boson pairs (HH) with one H decaying into four leptons and the other into a pair of b quarks is presented, using proton-proton collisions recorded at a center-of-mass energy of s\sqrt{s} = 13 TeV by the CMS experiment. The analyzed data correspond to an integrated luminosity of 138 fb−1^{-1}. A 95% confidence level upper limit of 32.4 is set on the signal strength modifier ÎŒ\mu, defined as the ratio of the observed HH production rate in the HH →\to ZZ*bbˉ\mathrm{\bar{b}} →\to 4ℓ\ellbbˉ\mathrm{\bar{b}} decay channel to the standard model expectation. Possible modifications of the H trilinear coupling λHHH\lambda_\text{HHH} with respect to the standard model (SM) value are investigated. The coupling modifier Îșλ\kappa_{\lambda}, defined as λHHH\lambda_\text{HHH} divided by its SM prediction, is constrained to be within the observed (expected) range -8.8 (-9.8) << Îșλ\kappa_{\lambda} << 13.4 (15.0) at 95% confidence level
    corecore