Measurement of the production cross section in pp collisions at 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.
- Research Organization:
- 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 Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- Contributing Organization:
- CMS Collaboration
- Grant/Contract Number:
- AC02-07CH11359
- OSTI ID:
- 1263695
- Alternate ID(s):
- OSTI ID: 1244503
- Report Number(s):
- FERMILAB-PUB-16-054-CMS; CMS-SMP-14-019; CERN-EP-2016-007; arXiv:1602.07152; S0370269316303410; PII: S0370269316303410
- Journal Information:
- Physics Letters B, Journal Name: Physics Letters B Vol. 760 Journal Issue: C; ISSN 0370-2693
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- Netherlands
- Language:
- English
Web of Science
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