Can the minimal supersymmetric standard model with light bottom squark and light gluino survive Z-peak constraints?
文献类型：期刊论文
| 作者 | Xiong, ZH; Cao, JJ; Yang, JM ; Cao, JJ , CCAST, World Lab, POB 8730, Beijing 100080, Peoples R China.
|
| 刊名 | PHYSICAL REVIEW LETTERS
 |
| 出版日期 | 2002 |
| 卷号 | 88期号:11页码:- |
| 关键词 | Production Cross-section = 1.8 Tev p(p)Over-bar Collisions Root-s=1.8 Tev Z-decays Quark b(b)Over-bar Scenario Physics |
| ISSN号 | 0031-9007 |
| 英文摘要 | In 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. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000174541700007 |
| 公开日期 | 2012-08-29 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/13564]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 通讯作者 | Cao, JJ , CCAST, World Lab, POB 8730, Beijing 100080, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Xiong, ZH,Cao, JJ,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 | Xiong, ZH,Cao, JJ,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 | Xiong, ZH,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):-. |
入库方式： OAI收割
来源：理论物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。