Double Higgs boson production and decay in Randall-Sundrum model at hadron colliders
Double Higgs boson production and decay in Randall-Sundrum model at hadron colliders
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强子对撞机 Randall-Sundrum 模型中双希格斯玻色子的产生和衰变
DOI：
10.1103/physrevd.92.116005
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Chen Chong
中科院分区：
文献类型：
--
作者：
Zhang Wen-Juan;Ma Wen-Gan;Zhang Ren-You;Li Xiao-Zhou;Guo Lei;Chen Chong
本文研究了14 TeV和33 TeV HE-LHC在标准模型和Randall-Sundrum（RS）模型下双Higgs粒子的产生和衰变。在我们的计算中，我们只合理地考虑了最轻的两个Kaluza-Klein（KK）引力子的贡献。我们给出了两种模型的积分截面和一些运动学分布。我们的结果表明，在最轻的两个KK引力子的质量MHH → M1，M2附近或中心Higgs快度区，RS效应是相当显著的，并且可以通过对末态粒子施加适当的运动学切割从重SM背景中提取出来.研究了散射截面与RS模型参数、第一KK引力子质量M1和有效耦合系数c 0的关系，发现随着M1的增大或c 0的减小，RS效应明显减弱。PACS：11.10.Kk、14.80.Cp、12.38.Bx
We investigate the double Higgs production and decay at the 14 TeV LHC and 33 TeV HE-LHC in both the standard model and Randall-Sundrum (RS) model. In our calculation we consider reasonably only the contribution of the lightest two Kaluza-Klein (KK) gravitons. We present the integrated cross sections and some kinematic distributions in both models. Our results show that the RS effect in the vicinities of MHH ∼ M1, M2 (the masses of the lightest two KK gravitons) or in the central Higgs rapidity region is quite significant, and can be extracted from the heavy SM background by imposing proper kinematic cuts on final particles. We also study the dependence of the cross section on the RS model parameters, the first KK graviton mass M1 and the effective coupling c0, and find that the RS effect is reduced obviously with the increment of M1 or decrement of c0. PACS: 11.10.Kk, 14.80.Cp, 12.38.Bx