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题名: SUSY effects in R-b: Revisited under current experimental constraints
作者: Su, W ;  Yang, JM
刊名: PHYSICS LETTERS B
出版日期: 2016
卷号: 757, 页码:136-141
关键词: Supersymmetry ;  R-b
学科分类: Astronomy & Astrophysics; Physics
DOI: http://dx.doi.org/10.1016/j.physletb.2016.03.075
通讯作者: Su, W ;  Yang, JM (reprint author), Acad Sinica, Inst Theoret Phys, Beijing 100190, Peoples R China. ;  Yang, JM (reprint author), Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan.
文章类型: Article
英文摘要: In this note we revisit the SUSY effects in R-b under current experimental constraints including the LHC Higgs data, the B-physics measurements, the dark matter relic density and direct detection limits, as well as the precision electroweak data. We first perform a scan to figure out the currently allowed parameter space and then display the SUSY effects in R-b. We find that although the SUSY parameter space has been severely restrained by current experimental data, both the general MSSM and the natural-SUSY scenario can still alter R-b with a magnitude sizable enough to be observed at future Z-factories (ILC, CEPC, FCC-ee, Super Z-factory) which produce 10(9)-10(12) Z-bosons. To be specific, assuming a precise measurement delta R-b = 2.0 x 10(-5) at FCC-ee, we can probe a right-handed stop up to 530 GeV through chargino-stop loops, probe a sbottom to 850 GeV through neutralino-sbottom loops and a charged Higgs to 770 GeV through the Higgs-top quark loops for a large tan beta. The full one-loop SUSY correction to R-b can reach 1 x 10(-4) in natural SUSY and 2 x 10(-4) in the general MSSM. (C) 2016 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP(3).
类目[WOS]: Astronomy & Astrophysics ;  Physics, Nuclear ;  Physics, Particles & Fields
关键词[WOS]: SUPERSYMMETRIC STANDARD MODEL ;  RADIATIVE-CORRECTIONS ;  Z-RESONANCE ;  MSSM ;  LHC ;  RENORMALIZATION ;  SEARCH ;  BOSON
收录类别: SCI
项目资助者: National Natural Science Foundation of China [11275245, 11135003] ;  CAS Center for Excellence in Particle Physics (CCEPP)
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/21621
Appears in Collections:理论物理所2016年知识产出_期刊论文

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Recommended Citation:
Su, W,Yang, JM. SUSY effects in R-b: Revisited under current experimental constraints[J]. PHYSICS LETTERS B,2016,757:136-141.
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