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Cao, JJ; Xiong, ZH; Yang, JM; Cao, JJ , CCAST, World Lab, POB 8730, Beijing 100080, Peoples R China.
Can the minimal supersymmetric standard model with light bottom squark and light gluino survive Z-peak constraints?
Source PublicationPHYSICAL REVIEW LETTERS
KeywordProduction Cross-section = 1.8 Tev p(p)Over-bar Collisions Root-s=1.8 Tev Z-decays Quark b(b)Over-bar Scenario Physics
AbstractIn the framework of the minimal supersymmetric model we examine the Z-peak constraints on the scenario of one light bottom squark (sbottom) (similar to2-5.5 GeV) and light gluino (similar to12-16 GeV) which has been successfully used to explain the excess of bottom quark production in hadron collisions. Such a scenario is found to be severely constrained by the CERN LEP Z-peak observables, especially by R-b, due to the large effect of gluino-sbottom loops. To account for the Rb data in this scenario, the other mass eigenstate of sbottom, i.e., the heavier one, must be lighter than 125 ( 195) GeV at 2sigma(3sigma) level, which, however, is disfavored by CERN LEP II experiments.
2002
ISSN0031-9007
Volume88Issue:11Pages:-
Subject AreaPhysics
Indexed BySCI
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/13564
Collection理论物理所科研产出_SCI论文
Corresponding AuthorCao, JJ , CCAST, World Lab, POB 8730, Beijing 100080, Peoples R China.
Recommended Citation
GB/T 7714
Cao, JJ,Xiong, ZH,Yang, JM,et al. Can the minimal supersymmetric standard model with light bottom squark and light gluino survive Z-peak constraints?[J]. PHYSICAL REVIEW LETTERS,2002,88(11):-.
APA Cao, JJ,Xiong, ZH,Yang, JM,&Cao, JJ , CCAST, World Lab, POB 8730, Beijing 100080, Peoples R China..(2002).Can the minimal supersymmetric standard model with light bottom squark and light gluino survive Z-peak constraints?.PHYSICAL REVIEW LETTERS,88(11),-.
MLA Cao, JJ,et al."Can the minimal supersymmetric standard model with light bottom squark and light gluino survive Z-peak constraints?".PHYSICAL REVIEW LETTERS 88.11(2002):-.
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