Searching for heavy charged Higgs boson with jet substructure at the LHC

被引:31
|
作者
Yang, Shuo [1 ,2 ]
Yan, Qi-Shu [3 ]
机构
[1] Dalian Univ Technol, Dept Phys, Dalian 116622, Peoples R China
[2] Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China
[3] Chinese Acad Sci, Coll Phys Sci, Grad Univ, Beijing 100039, Peoples R China
来源
基金
美国国家科学基金会;
关键词
Jets; Phenomenological Models; Beyond Standard Model; LARGE HADRON COLLIDER; SUPERSYMMETRIC STANDARD MODEL; TOP-QUARK DECAYS; E(+)E(-) COLLISIONS; PAIR PRODUCTION; GLUON FUSION; CERN LHC; CP-ODD; ALGORITHMS; SCATTERING;
D O I
10.1007/JHEP02(2012)074
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
We study the heavy charged Higgs boson (from 800 GeV to 1500 GeV in this study) in production associated with a top quark at the LHC with the collision energy root s = 14 TeV. Such a heavy charged Higgs boson can dominantly decay into a top quark and a bottom quark due to its large Yukawa couplings, like in MSSM. To suppress background events and to confirm the signal, we reconstruct the mass bumps of the heavy charged Higgs boson and the associated top quark. For this purpose, we propose a hybrid-R reconstruction method which utilizes the top tagging technique, a jet substructure technique developed for highly boosted massive particles. By using the full hadronic mode of pp -> H(+/-)t -> ttb as a test field, we find that this method can greatly reduce the combinatorics in the full reconstruction and can successfully reduce background events down to a controlled level. The sensitivity of LHC to the heavy charged Higgs boson with two b taggings is studied and a 9.5 sigma significance can be achieved when m(H +/-) = 1 TeV.
引用
收藏
页数:27
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