An inclusive measurement of the Z gamma -> nu(nu) over bar gamma production cross section in pp collisions at root s = 8 TeV is presented, using data corresponding to an integrated luminosity of 19.6fb(-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 vertical bar eta vertical bar < 1.44. The measured Z gamma -> nu<(nu)over bar>gamma 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(-2.2)(+2.4) fb. A study of the photon transverse momentum spectrum yields the most stringent limits to date on the anomalous ZZ gamma and Z gamma gamma trilinear gauge boson couplings. (C) 2016 The Author(s). Published by Elsevier B.V.

Khachatryan, V., Sirunyan, A.M., Tumasyan, A., Adam, W., Asilar, E., Bergauer, T., et al. (2016). Measurement of the Zγ → νν̅ γ production cross section in pp collisions at √s=8 TeV and limits on anomalous ZZγ and Zγγ trilinear gauge boson couplings. PHYSICS LETTERS. SECTION B, 760, 448-468 [10.1016/j.physletb.2016.06.080].

Measurement of the Zγ → νν̅ γ production cross section in pp collisions at √s=8 TeV and limits on anomalous ZZγ and Zγγ trilinear gauge boson couplings

CIOCCI, MARIA AGNESE;MESSINEO, ALBERTO MARIA;
2016-01-01

Abstract

An inclusive measurement of the Z gamma -> nu(nu) over bar gamma production cross section in pp collisions at root s = 8 TeV is presented, using data corresponding to an integrated luminosity of 19.6fb(-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 vertical bar eta vertical bar < 1.44. The measured Z gamma -> nu<(nu)over bar>gamma 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(-2.2)(+2.4) fb. A study of the photon transverse momentum spectrum yields the most stringent limits to date on the anomalous ZZ gamma and Z gamma gamma trilinear gauge boson couplings. (C) 2016 The Author(s). Published by Elsevier B.V.
2016
Khachatryan, V., Sirunyan, A.M., Tumasyan, A., Adam, W., Asilar, E., Bergauer, T., et al. (2016). Measurement of the Zγ → νν̅ γ production cross section in pp collisions at √s=8 TeV and limits on anomalous ZZγ and Zγγ trilinear gauge boson couplings. PHYSICS LETTERS. SECTION B, 760, 448-468 [10.1016/j.physletb.2016.06.080].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/1327737