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题名: Residual effects of heavy sparticles in the bottom quark Yukawa coupling: A comparative study for the MSSM and NMSSM
作者: Wang, Wenyu ;  Xiong, Zhaohua ;  Yang, Jin Min
刊名: PHYSICS LETTERS B
出版日期: 2009
卷号: 680, 期号:2, 页码:167-171
关键词: SUPERSYMMETRIC STANDARD MODEL ;  HIGGS BOSONS ;  TAN-BETA ;  SECTOR
学科分类: Physics
通讯作者: Yang, JM , Chinese Acad Sci, Key Lab Frontiers Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China
部门归属: [Yang, JM] Chinese Acad Sci, Key Lab Frontiers Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China; [Wang, WY; Xiong, ZH] Beijing Univ Technol, Inst Theoret Phys, Coll Appl Sci, Beijing 100020, Peoples R China
英文摘要: If the sparticles are relatively heavy (a few TeV) while the Higgs sector is not so heavy (m(A) is not so large), the Higgs boson Yukawa couplings can harbor sizable quantum effects of sparticles and these large residual effects may play a special role in probing supersymmetry at foreseeable colliders. In this work, focusing on the supersymmetric QCD effects in the hb (b) over bar coupling (h is the lightest CP-even Higgs boson), we give a comparative study for the two popular supersymmetric models: the MSSM and NMSSM. While for both models the supersymmetric QCD can leave over large residual quantum effects in hb (b) over bar coupling, the NMSSM can allow for a much broader region of such effects. Since these residual effects can be over 20% for the hb (b) over bar coupling (and thus over 40% for the ratio Br(h -> b (b) over bar)/Br(h -> tau(+)tau(-))), future measurements may unravel the effects of heavy sparticles or even distinguish the two models. (C) 2009 Elsevier B.V. All rights reserved.
资助者: National Natural Science Foundation of China[10821504, 10725526, 10635030]; Natural Science Foundation of Beijing[1072001]
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000270608400012
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5239
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Wang, Wenyu,Xiong, Zhaohua,Yang, Jin Min. Residual effects of heavy sparticles in the bottom quark Yukawa coupling: A comparative study for the MSSM and NMSSM[J]. PHYSICS LETTERS B,2009,680(2):167-171.
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