Scalar explanation of diphoton excess at LHC

被引:35
作者
Han, Huayong [1 ]
Wang, Shaoming [1 ]
Zheng, Sibo [1 ]
机构
[1] Chongqing Univ, Dept Phys, Chongqing 401331, Peoples R China
基金
中国国家自然科学基金;
关键词
PP COLLISIONS; RESONANCE; SEARCH;
D O I
10.1016/j.nuclphysb.2016.04.002
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
Inspired by the diphoton signal excess observed in the latest data of 13 TeV LHC, we consider either a 750 GeV real scalar or pseudo-scalar responsible for this anomaly. We propose a concrete vector-like quark model, in which the vector-like fermion pairs directly couple to this scalar via Yukawa interaction. For this setting the scalar is mainly produced via gluon fusion, then decays at the one-loop level to SM diboson channels gg, gamma gamma, ZZ, WW. We show that for the vector-like fermion pairs with exotic electric charges, such model can account for the diphoton excess and is consistent with the data of 8 TeV LHC simultaneously in the context of perturbative analysis. (C) 2016 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license.
引用
收藏
页码:180 / 186
页数:7
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