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  • Authors: CMS Collaboration;

    CERN-LHC. The nuclear modification factors of J/psi and psi(2S) mesons are measured in PbPb collisions at a centre-of-mass energy per nucleon pair of 5.02 TeV. The analysis is based on PbPb and pp data samples collected by CMS at the LHC in 2015, corresponding to integrated luminosities of 464 inverse microbarns and 28 inverse picobarns, respectively. The measurements are performed in the dimuon rapidity range of abs(y)< 2.4 as a function of centrality, rapidity, and transverse momentum (pT) from pT= 3 GeV/c in the most forward region and up to 50 GeV/c. Both prompt and nonprompt (coming from b hadron decays) J/psi mesons are observed to be increasingly suppressed with centrality, with a magnitude similar to the one observed at 2.76 TeV for the two J/psi meson components. No dependence on rapidity is observed for either prompt or nonprompt J/psi mesons. An indication of a lower prompt J/psi meson suppression at pT > 25 GeV/c is seen with respect to that observed at intermediate pT. The prompt psi(2S) meson yield is found to be more suppressed than that of the prompt J/psi mesons in the entire pT range. Fraction of J/psi mesons coming from the decay of b hadrons, i.e. nonprompt J/psi meson fraction, as a function of dimuon pT for pp and PbPb collisions, for all centralities.

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    HEPData
    Dataset . 2018
    Data sources: Datacite
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      HEPData
      Dataset . 2018
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  • Authors: CMS Collaboration;

    A search for physics beyond the standard model (SM) in final states with an electron or muon and missing transverse momentum is presented. The analysis uses data from proton-proton collisions at a center-of-mass energy of 13 TeV, collected with the CMS detector at the LHC in 2016–2018, corresponding to an integrated luminosity of 137 fb-1. No significant deviation from the SM prediction is observed. Model independent limits are set on the production cross section and coupling strength of W' bosons decaying into lepton-plus-neutrino final states. This analysis also sets limits on the parameters of other models beyond-the-SM. A 5.7 TeV exclusion limit at 95% confidence level on the mass of a sequential SM W' boson with SM-like couplings is found, when combining electron and muon decay channels. Results on oblique electroweak parameters, in particular on the W parameter, are also presented for the first time using LHC data. These results are combined with those from the direct resonance search to set constraints on composite Higgs scenarios. Observed (solid line) and expected (dashed line) upper limits at 95% CL on the product of WPRIME cross-section production and BF(WPRIME --> LEPTON + NU) for an SSM WPRIME boson, as a function of the boson mass, for the muon decay channel. The shaded bands represent the one (green) and two (yellow) standard deviation uncertainty bands for the expected limits. The theoretical predictions for the SSM at NNLO precision in QCD are shown with narrow gray bands corresponding to the PDF and ALPHAS uncertainties.

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    HEPData
    Dataset . 2023
    Data sources: Datacite
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      HEPData
      Dataset . 2023
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  • Authors: Garai, Bikash; Bon, Volodymyr; Krause, Simon; Schwotzer, Friedrich; +3 Authors

    Related Article: Bikash Garai, Volodymyr Bon, Simon Krause, Friedrich Schwotzer, Martin Gerlach, Irena Senkovska, Stefan Kaskel|2020|Chem.Mater.|32|889|doi:10.1021/acs.chemmater.9b04769

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  • Authors: CMS Collaboration;

    The transverse momentum $p_{T}$ distributions of $\Lambda$, $\Xi-$, and $\Omega-$ baryons, their antiparticles, and ${K_{0}}^{S}$ mesons are measured in proton-proton (pp) and proton-lead (pPb) collisions at a nucleon-nucleon center-of-mass energy of 5.02 TeV over a broad rapidity range. The data, corresponding to integrated luminosities of 40.2 $nb^{−1}$ and 15.6 $μb^{−1}$ for pp and pPb collisions, respectively, were collected by the CMS experiment. The nuclear modification factor $R_{pPb}$, which is defined as the ratio of the particle yield in pPb collisions and a scaled pp reference, is measured for each particle. A strong dependence on particle species is observed in the $p_{T}$ range from 2 to 7 GeV, where $R_{pPb}$ for ${K_{0}}^{S}$ is consistent with unity, while an enhancement ordered by strangeness content and/or particle mass is observed for the three baryons. In pPb collisions, the strange hadron production is asymmetric about the nucleon-nucleon center-of-mass rapidity. Enhancements, which depend on the particle type, are observed in the direction of the Pb beam. The results are compared with predictions from EPOS LHC, which includes parametrized radial flow. The model is in qualitative agreement with the $R_{pPb}$ data, but fails to describe the dependence on particle species in the yield asymmetries measured away from midrapidity in pPb collisions. $Y_{asym}$ in p+Pb at $\sqrt{s}$=5.02 TeV in 1.3 < |$y_{CM}$| < 1.8

    HEPDataarrow_drop_down
    HEPData
    Dataset . 2021
    Data sources: Datacite
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      HEPData
      Dataset . 2021
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  • Authors: Storey, Caroline M.; Gyton, Matthew R.; Andrew, Rhiann E.; Chaplin, Adrian B.;

    Related Article: Caroline M. Storey, Matthew R. Gyton, Rhiann E. Andrew, Adrian B. Chaplin|2020|Chem.-Eur.J.|26|14715|doi:10.1002/chem.202002962

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  • Authors: CMS Collaboration;

    Ratio RMN_veto of the cross sections for Mueller-Navelet to ”exclusive” with veto dijet production together with predictions of different MC models. No data abstract available.

    HEPDataarrow_drop_down
    HEPData
    Dataset . 2021
    Data sources: Datacite
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      HEPData
      Dataset . 2021
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  • Authors: CMS Collaboration;

    CERN-LHC. The cross sections for $\Upsilon(\mathrm{1S})$, $\Upsilon(\mathrm{2S})$, and $\Upsilon(\mathrm{3S})$ production in lead-lead (PbPb) and proton-proton (pp) collisions at $ {\sqrt {\smash [b]{s_{_{\mathrm {NN}}}}}} = $ 5.02 TeV have been measured using the CMS detector at the LHC. The nuclear modification factors, $ {R_{\mathrm{AA}}} $, derived from the PbPb-to-pp ratio of yields for each state, are studied as functions of meson rapidity and transverse momentum, as well as PbPb collision centrality. The yields of all three states are found to be significantly suppressed, and compatible with a sequential ordering of the suppression, $ {R_{\mathrm{AA}}}( \Upsilon(\mathrm{1S}) ) > {R_{\mathrm{AA}}}( \Upsilon(\mathrm{2S})) > {R_{\mathrm{AA}}} (\Upsilon(\mathrm{3S}) )$ . The suppression of $ \Upsilon(\mathrm{1S})$ is larger than that seen at $ {\sqrt {\smash [b]{s_{_{\mathrm {NN}}}}}} = $ 2.76 TeV, although the two are compatible within uncertainties. The upper limit on the ${R_{\mathrm{AA}}}$ of $ \Upsilon(\mathrm{3S})$ integrated over $ {p_{\mathrm{T}}} $ and rapidity and centrality is 0.096 at 95% confidence level, which is the strongest suppression observed for any hadron species in heavy ion collisions to date. Nuclear modification factor of the Y(3S) meson as a function of rapidity.

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    HEPData
    Dataset . 2019
    Data sources: Datacite
    HEPData
    Dataset . 2019
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      HEPDataarrow_drop_down
      HEPData
      Dataset . 2019
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      Dataset . 2019
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  • Authors: Taylor, Christopher G. P.; Argent, Stephen P.; Ludden, Michael D.; Piper, Jerico R.; +3 Authors

    Related Article: Christopher G. P. Taylor, Stephen P. Argent, Michael D. Ludden, Jerico R. Piper, Cristina Mozaceanu, Sarah A. Barnett, Michael D. Ward|2020|Chem.-Eur.J.|26|3054|doi:10.1002/chem.201905499

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  • Authors: CMS Collaboration;

    Expected and observed upper limits at the 95% CL on the pp --> X --> ZZ cross section as a function of $m_X$ with $\Gamma_X$=10 GeV in VBF production mode. No data abstract available.

    HEPDataarrow_drop_down
    HEPData
    Dataset . 2018
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      Dataset . 2018
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  • Authors: Liu, Junzhi; Li, Bo-Wei; Tan, Yuan-Zhi; Giannakopoulos, Angelos; +6 Authors

    An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures. Related Article: Junzhi Liu , Bo-Wei Li , Yuan-Zhi Tan , Angelos Giannakopoulos , Carlos Sanchez-Sanchez , David Beljonne , Pascal Ruffieux , Roman Fasel , Xinliang Feng , and Klaus Müllen|2015|J.Am.Chem.Soc.|137|6097|doi:10.1021/jacs.5b03017

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  • Authors: CMS Collaboration;

    CERN-LHC. The nuclear modification factors of J/psi and psi(2S) mesons are measured in PbPb collisions at a centre-of-mass energy per nucleon pair of 5.02 TeV. The analysis is based on PbPb and pp data samples collected by CMS at the LHC in 2015, corresponding to integrated luminosities of 464 inverse microbarns and 28 inverse picobarns, respectively. The measurements are performed in the dimuon rapidity range of abs(y)< 2.4 as a function of centrality, rapidity, and transverse momentum (pT) from pT= 3 GeV/c in the most forward region and up to 50 GeV/c. Both prompt and nonprompt (coming from b hadron decays) J/psi mesons are observed to be increasingly suppressed with centrality, with a magnitude similar to the one observed at 2.76 TeV for the two J/psi meson components. No dependence on rapidity is observed for either prompt or nonprompt J/psi mesons. An indication of a lower prompt J/psi meson suppression at pT > 25 GeV/c is seen with respect to that observed at intermediate pT. The prompt psi(2S) meson yield is found to be more suppressed than that of the prompt J/psi mesons in the entire pT range. Fraction of J/psi mesons coming from the decay of b hadrons, i.e. nonprompt J/psi meson fraction, as a function of dimuon pT for pp and PbPb collisions, for all centralities.

    HEPDataarrow_drop_down
    HEPData
    Dataset . 2018
    Data sources: Datacite
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      Dataset . 2018
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  • Authors: CMS Collaboration;

    A search for physics beyond the standard model (SM) in final states with an electron or muon and missing transverse momentum is presented. The analysis uses data from proton-proton collisions at a center-of-mass energy of 13 TeV, collected with the CMS detector at the LHC in 2016–2018, corresponding to an integrated luminosity of 137 fb-1. No significant deviation from the SM prediction is observed. Model independent limits are set on the production cross section and coupling strength of W' bosons decaying into lepton-plus-neutrino final states. This analysis also sets limits on the parameters of other models beyond-the-SM. A 5.7 TeV exclusion limit at 95% confidence level on the mass of a sequential SM W' boson with SM-like couplings is found, when combining electron and muon decay channels. Results on oblique electroweak parameters, in particular on the W parameter, are also presented for the first time using LHC data. These results are combined with those from the direct resonance search to set constraints on composite Higgs scenarios. Observed (solid line) and expected (dashed line) upper limits at 95% CL on the product of WPRIME cross-section production and BF(WPRIME --> LEPTON + NU) for an SSM WPRIME boson, as a function of the boson mass, for the muon decay channel. The shaded bands represent the one (green) and two (yellow) standard deviation uncertainty bands for the expected limits. The theoretical predictions for the SSM at NNLO precision in QCD are shown with narrow gray bands corresponding to the PDF and ALPHAS uncertainties.

    HEPDataarrow_drop_down
    HEPData
    Dataset . 2023
    Data sources: Datacite
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      HEPDataarrow_drop_down
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      Dataset . 2023
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  • Authors: Garai, Bikash; Bon, Volodymyr; Krause, Simon; Schwotzer, Friedrich; +3 Authors

    Related Article: Bikash Garai, Volodymyr Bon, Simon Krause, Friedrich Schwotzer, Martin Gerlach, Irena Senkovska, Stefan Kaskel|2020|Chem.Mater.|32|889|doi:10.1021/acs.chemmater.9b04769

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  • Authors: CMS Collaboration;

    The transverse momentum $p_{T}$ distributions of $\Lambda$, $\Xi-$, and $\Omega-$ baryons, their antiparticles, and ${K_{0}}^{S}$ mesons are measured in proton-proton (pp) and proton-lead (pPb) collisions at a nucleon-nucleon center-of-mass energy of 5.02 TeV over a broad rapidity range. The data, corresponding to integrated luminosities of 40.2 $nb^{−1}$ and 15.6 $μb^{−1}$ for pp and pPb collisions, respectively, were collected by the CMS experiment. The nuclear modification factor $R_{pPb}$, which is defined as the ratio of the particle yield in pPb collisions and a scaled pp reference, is measured for each particle. A strong dependence on particle species is observed in the $p_{T}$ range from 2 to 7 GeV, where $R_{pPb}$ for ${K_{0}}^{S}$ is consistent with unity, while an enhancement ordered by strangeness content and/or particle mass is observed for the three baryons. In pPb collisions, the strange hadron production is asymmetric about the nucleon-nucleon center-of-mass rapidity. Enhancements, which depend on the particle type, are observed in the direction of the Pb beam. The results are compared with predictions from EPOS LHC, which includes parametrized radial flow. The model is in qualitative agreement with the $R_{pPb}$ data, but fails to describe the dependence on particle species in the yield asymmetries measured away from midrapidity in pPb collisions. $Y_{asym}$ in p+Pb at $\sqrt{s}$=5.02 TeV in 1.3 < |$y_{CM}$| < 1.8

    HEPDataarrow_drop_down
    HEPData
    Dataset . 2021
    Data sources: Datacite
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      HEPDataarrow_drop_down
      HEPData
      Dataset . 2021
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  • Authors: Storey, Caroline M.; Gyton, Matthew R.; Andrew, Rhiann E.; Chaplin, Adrian B.;

    Related Article: Caroline M. Storey, Matthew R. Gyton, Rhiann E. Andrew, Adrian B. Chaplin|2020|Chem.-Eur.J.|26|14715|doi:10.1002/chem.202002962

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