Tri-photon at muon collider: a new process to probe the anomalous quartic gauge couplings
Ji-Chong Yang, Zhi-Bin Qin, Xueying Han, Yu-Chen Guo, Tong Li
Abstract
A bstract The muon collider has recently received a great deal of attention because of its ability to achieve both high energy and high luminosity. It plays as a gauge boson collider because the vector boson scattering (VBS) becomes the dominant production topology for Standard Model processes starting from a few TeV of collision energy. In this paper, we propose that the process of μ + μ − annihilation into tri-photon is also very sensitive to the search of anomalous quartic gauge couplings (aQGCs). We investigate the projected constraints on the transverse operators contributing to aQGCs through μ + μ − → Z * /γ * → γγγ at muon colliders. For the muon collider with $$ \sqrt{s} $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> </mml:math> = 3 TeV and $$ \mathcal{L} $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>L</mml:mi> </mml:math> = 1 ab − 1 , the expected constraints are about two orders of magnitude stronger than those at the 13 TeV LHC.