Searching heavier Higgs boson via di-Higgs production at LHC Run-2

分类： 物理学 >> 核物理学 提交时间： 2016-09-14

Lan-Chun L¨u Chun Du y Yaquan Fang Hong-Jian He Huijun Zhang€

摘要： The LHC discovery of a light Higgs particle h0 (125GeV) opens up new prospect for searching heavier Higgs boson(s) at the LHC Run-2, which will unambiguously point to new physics beyond the standard model (SM). We study the detection of a heavier neutral Higgs boson H0 via di-Higgs production channel at the LHC (14TeV), H0→h0h0→WW∗γγ. This directly probes the Hhh cubic Higgs interaction, which exists in most extensions of the SM Higgs sector. For the decay products of final states WW∗, we include both pure leptonic mode WW∗→ℓν¯ℓ¯ν and semi-leptonic mode WW∗→qq¯′ℓν. We analyze signals and backgrounds by performing fast detector simulation for the full processes pp→H→hh→WW∗γγ→ℓν¯ℓ¯νγγ and pp→H→hh→WW∗γγ→ℓνqq¯′γγ, over the mass range MH=250−600GeV. For generic two-Higgs-doublet models (2HDM), we present the discovery reach of the heavier Higgs boson at the LHC Run-2, and compare it with the current Higgs global fit of the 2HDM parameter space.

同行评议状态:待评议

 点击量 1307  下载量 627  评论