A gamma gamma collider for the 750 GeV resonant state

作者：He, Min; He, Xiao-Gang^*; Tang, Yong

来源：Physics Letters B, 2016, 759: 166-170.

DOI：10.1016/j.physletb.2016.05.056

Recent data collected by ATLAS and CMS at 13 TeV collision energy of the LHC indicate the existence of a new resonant state phi with a mass of 750 GeV decaying into two photons gamma gamma. The properties of phi should be studied further at the LHC and also future colliders. Since only phi -> gamma gamma decay channel has been measured, one of the best ways to extract more information about phi is to use a gamma gamma collider to produce phi at the resonant energy. In this work we show how a gamma gamma collider helps to verify the existence of phi and to provide some of the most important information about the properties of phi, such as branching fractions of phi -> V1V2. Here V-i can be gamma, Z, or W-+/-. We also show that by studying angular distributions of the final gamma's in gamma gamma -> phi -> gamma gamma, one can obtain crucial information about whether this state is a spin-0 or a spin-2 state.

• 出版日期2016-8-10
• 单位上海交通大学