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Title: Measurement of the Zγννγ production cross section in pp collisions at s=8 TeV and limits on anomalous ZZγ and Zγγ trilinear gauge boson couplings

An inclusive measurement of the Zγ→$$ν\overline{ν}$$γ production cross section in pp collisions at $$\sqrt{s}=$$ 8 TeV is presented, using data corresponding to an integrated luminosity of 19.6 fb₋1 collected with the CMS detector at the LHC. This measurement is based on the observation of events with large missing energy and with a single photon with transverse momentum above 145 GeV and absolute pseudorapidity in the range |η|<1.44 . The measured Zγ→$$ν\overline{ν}$$γ production cross section, 52.7±2.1 (stat) ±6.4 (syst) ±1.4 (lumi) fb , agrees well with the standard model prediction of 50.0$$+2.4\atop{₋2.2}$$ fb . As a result, a study of the photon transverse momentum spectrum yields the most stringent limits to date on the anomalous ZZγ and Zγγ trilinear gauge boson couplings.
Authors:
 [1]
  1. Yerevan Physics Inst. (YerPhI) (Armenia). et al.
Publication Date:
OSTI Identifier:
1263695
Report Number(s):
FERMILAB-PUB-16-054-CMS; CMS-SMP-14-019; CERN-EP-2016-007; arXiv:1602.07152
Journal ID: ISSN 0370-2693; 1423069
Grant/Contract Number:
AC02-07CH11359
Type:
Published Article
Journal Name:
Physics Letters. Section B
Additional Journal Information:
Journal Volume: 760; Journal Issue: C; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Research Org:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Orgs:
CMS Collaboration
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; photon; MET