Probing stops in the coannihilation region at the HL-LHC: A comparative study of different processes

doi:10.1016/j.physletb.2020.135800

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	Probing stops in the coannihilation region at the HL-LHC: A comparative study of different processes
	Duan, Guang Hua 1,2; Fan, Xiang 1; Hikasa, Ken-ichi ; Peng, Bo 1; Yang, Jin Min 1,3
刊名	PHYSICS LETTERS B
	2020
卷号	810 页码:135800
关键词	MODEL HIGGS-BOSON FORTRAN CODE DECAYS SUSY TOP
ISSN号	0370-2693
DOI	10.1016/j.physletb.2020.135800
英文摘要	In the minimal supersymmetric model, the coannihilation of the lighter stop (t) over tilde (1) and bino-like dark matter chi provides a feasible way to accommodate the correct dark matter relic abundance. In this scenario, due to the compressed masses, (t) over tilde (1)merely appears as missing energy at the LHC and thus the pair production of (t) over tilde (1) can only be probed by requiring an associated energetic jet. Meanwhile, since (t) over tilde (2) and (b) over tilde (1) are correlated in mass and mixing with (t) over tilde (1), the production of (t) over tilde (2)(t) over tilde (2)* or (b) over tilde (1)(b) over tilde (1), each of which dominantly decays into (t) over tilde (1) plus Z, h or W boson, may serve as a complementary probe. We examine all these processes at the HL-LHC and find that the 2 sigma sensitivity to chi mass can be as large as about 570 GeV, 600 GeV for m((t) over tilde2) less than or similar to 1100 GeV and 1.1 TeV for m((b) over tilde1)less than or similar to 1375 GeV from the production process of (t) over tilde (1)(t) over tilde (1)+jet, (t) over tilde (2)(t) over tilde (2)and (b) over tilde (1)(b) over tilde (1), respectively. (C) 2020 The Authors. Published by Elsevier B.V.
学科主题	Astronomy & Astrophysics ; Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/27444]
专题	理论物理研究所_理论物理所1978-2010年知识产出
作者单位	1.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China 3.Univ Calif Los Angeles, Dept Elect & Comp Engn, Los Angeles, CA 90095 USA 4.Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan
推荐引用方式 GB/T 7714	Duan, Guang Hua,Fan, Xiang,Hikasa, Ken-ichi,et al. Probing stops in the coannihilation region at the HL-LHC: A comparative study of different processes[J]. PHYSICS LETTERS B,2020,810:135800.
APA	Duan, Guang Hua,Fan, Xiang,Hikasa, Ken-ichi,Peng, Bo,&Yang, Jin Min.(2020).Probing stops in the coannihilation region at the HL-LHC: A comparative study of different processes.PHYSICS LETTERS B,810,135800.
MLA	Duan, Guang Hua,et al."Probing stops in the coannihilation region at the HL-LHC: A comparative study of different processes".PHYSICS LETTERS B 810(2020):135800.