期刊
CHINESE PHYSICS C
卷 44, 期 12, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1674-1137/abb4d2
关键词
anomalous quartic gauge coupling; vector boson scattering; Large Hadron Collider; Standard Model effective field theory
资金
- National Natural Science Foundation of China [11905093, 11875157, 11947402]
- Doctoral Start-up Foundation of Liaoning Province [2019-BS-154]
Vector boson scattering at the Large Hadron Collider (LHC) is sensitive to anomalous quartic gauge couplings (aQGCs). In this study, we investigate the aQGC contribution to W gamma jj production at the LHC with root s = 13 TeV in the context of an effective field theory (EFT). The unitarity bound is applied as a cut on the energy scale of this production process, which is found to have significant suppressive effects on signals. To enhance the statistical significance, we analyze the kinematic and polarization features of the aQGC signals in detail. We find that the polarization effects induced by aQGCs are unique and can discriminate the signals from the SM backgrounds well. With the proposed event selection strategy, we obtain the constraints on the coefficients of dimension-8 operators with current luminosity. The results indicate that the process pp -> W gamma jj is powerful for searching for the and O-M2,O-3,O-4,O-5 and O-T5,O-6,O-7 operators.
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