论文编号:
第一作者所在部门:
论文题目:	Probing a scalar singlet-catalyzed electroweak phase transition with resonant di-Higgs boson production in the 4b channel
论文题目英文:
作者:	Li, Hao-Lin; Ramsey-Musolf, Michael J.; Willocq, Stephane
论文出处:
刊物名称:	PHYSICAL REVIEW D
年:	2019
卷:	100
期:	7
页:	75035
联系作者:
收录类别:
影响因子:
摘要:	We investigate the prospective reach of the 14 TeV HL-LHC for resonant production of a heavy Higgs boson that decays to two SM-like Higgs bosons in the 4b final state in the scalar singlet extended Standard Model. We focus on the reach for choices of parameters yielding a strong first order electroweak phase transition. The event selection follows the 4b analysis by the ATLAS Collaboration, enhanced with the use of a boosted decision tree method to optimize the discrimination between signal and background events. The output of the multivariate discriminant is used directly in the statistical analysis. The prospective reach of the 4b channel is compatible with previous projections for the bb gamma gamma and 4 tau channels for heavy Higgs boson mass m(2) below 500 GeV and superior to these channels for m(2) > 500 GeV. With 3 ab(-1) of integrated luminosity, it is possible to discover the heavy Higgs boson in the 4b channel for m(2) < 500 GeV in regions of parameter space yielding a strong first order electroweak phase transition and satisfying all other phenomenological constraints.
英文摘要:
外单位作者单位:
备注: