Z(V(V)over-bar)γ Measurement and Neutral aTGC Limits at 13 TeV with the ATLAS Detector

被引：0
|
作者：
Dartsi, Olympia [1 ]
机构：
[1] Univ Savoie Mt Blanc, LAPP, CNRS IN2P3, F-74940 Annecy, France
来源：
BULLETIN OF THE LEBEDEV PHYSICS INSTITUTE | 2020年 / 47卷 / 10期
关键词：
ATLAS detector; LHC; 13; TeV; Standard Model; electroweak; Z gamma production; anomalous triple gauge boson coupling (aTGC); ZZ gamma couplings; Z gamma gamma couplings;
D O I：
10.3103/S106833562010005X
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The production of a Z boson in association with a high-energy photon (gamma) in proton-proton collisions has been studied at the Large Hadron Collider (LHC). These studies have been used to test the electroweak sector of the Standard Model and to search for new physics effects, such as potential couplings of Z bosons to photons. The Z gamma production with the Z boson decaying into neutrinos has been measured with data collected by the ATLAS detector during the 2015-2016 period at a centerof-mass energy of 13 TeV and corresponding to an integrated luminosity of 36.1 fb(-1). Candidate Z gamma events with invisible decays of the Z boson are selected by requiring significant transverse momentum of the neutrinos system in conjunction with a single isolated photon with large transverse energy (ET). Evidence of anomalous triple gauge-boson couplings is sought in Z gamma production with photon ET greater than 600 GeV. No excess is observed relative to the Standard Model expectation, and upper limits are set on the strength of ZZ gamma and Z gamma gamma couplings.
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页码：303 / 307
页数：5
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