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Measurement of the cross section for electroweak production of Z$\gamma$ in association with two jets and constraints on anomalous quartic gauge couplings in proton–proton collisions at $\sqrt{s} = 8$ TeV

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  • معلومة اضافية
    • Contributors:
      Institut Pluridisciplinaire Hubert Curien (IPHC); Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS); Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3); Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU); Université Paris-Saclay-Direction de Recherche Fondamentale (CEA) (DRF (CEA)); Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA); Laboratoire Leprince-Ringuet (LLR); Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X); Institut Polytechnique de Paris (IP Paris)-Institut Polytechnique de Paris (IP Paris)-Centre National de la Recherche Scientifique (CNRS); Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA)); Centre de Calcul de l'IN2P3 (CC-IN2P3); Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS); Institut de Physique Nucléaire de Lyon (IPNL); Université Claude Bernard Lyon 1 (UCBL); Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS); CMS
    • بيانات النشر:
      CCSD
    • الموضوع:
      2017
    • نبذة مختصرة :
      International audience ; A measurement is presented of the cross section for the electroweak production of a Z boson and a photon in association with two jets in proton–proton collisions at s=8 TeV . The Z bosons are identified through their decays to electron or muon pairs. The measurement is based on data collected with the CMS detector corresponding to an integrated luminosity of 19.7 fb −1 . The electroweak contribution has a significance of 3.0 standard deviations, and the measured fiducial cross section is 1.86−0.75+0.90(stat)−0.26+0.34(syst)±0.05(lumi) fb, while the summed electroweak and quantum chromodynamic total cross section in the same region is observed to be 5.94−1.35+1.53(stat)−0.37+0.43(syst)±0.13(lumi) fb. Both measurements are consistent with the leading-order standard model predictions. Limits on anomalous quartic gauge couplings are set based on the Zγ mass distribution.
    • Relation:
      info:eu-repo/semantics/altIdentifier/arxiv/1702.03025; ARXIV: 1702.03025; INSPIRE: 1512924
    • الرقم المعرف:
      10.1016/j.physletb.2017.04.071
    • الدخول الالكتروني :
      https://hal.science/hal-01669817
      https://hal.science/hal-01669817v1/document
      https://hal.science/hal-01669817v1/file/1-s2.0-S0370269317303453-main.pdf
      https://doi.org/10.1016/j.physletb.2017.04.071
    • Rights:
      info:eu-repo/semantics/OpenAccess
    • الرقم المعرف:
      edsbas.9DBD5958