Implications of LEP and SLD data for new physics in Zb(b)over-bar couplings
文献类型：期刊论文
| 作者 | Oakes, RJ; Yang, JM ; Young, BL; Oakes, RJ , Northwestern Univ, Dept Phys & Astron, Evanston, IL 60208 USA.
|
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2000 |
| 卷号 | 61期号:7页码:- |
| 关键词 | Top-quark Production Parity-violating Supersymmetry W-gluon Fusion Fermilab-tevatron R-parity Standard Model Yukawa Corrections 3rd-family Quarks Z-resonance Z-decays |
| ISSN号 | 0556-2821 |
| 英文摘要 | The combined CERN LEP and SLAC Large Detector (SLD) data on the b,(b) over bar forward-backward asymmetry from the Z-pole measurements may imply the presence of new physics in the Zb (b) over bar couplings. In general, the effect of new physics can be parametrized by SUC(3) x SUL(2) x U-Y(1) invariant higher dimensional operators. By fitting the recently announced LEP and SLD data on A(b) and R-b, the size of the coupling strengths of these operators can be determined. We also found that the new physics operators can be divided into two types, depending on their Higgs field content. The ones involving the Higgs field have very mild effects at higher energy colliders, while the other type which do not contain the Higgs field can show significantly large effects on b (b) over bar production at LEP II, t (t) over bar production at the NLC and single top quark production at the Fermilab Tevatron. The preliminary data from the LEP II measurements disfavor the second type of operators. |
| 学科主题 | Physics |
| WOS记录号 | WOS:000086065200076 |
| 公开日期 | 2012-08-29 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/12993]  |
| 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 | Oakes, RJ , Northwestern Univ, Dept Phys & Astron, Evanston, IL 60208 USA. |
| 推荐引用方式 GB/T 7714 | Oakes, RJ,Yang, JM,Young, BL,et al. Implications of LEP and SLD data for new physics in Zb(b)over-bar couplings[J]. PHYSICAL REVIEW D,2000,61(7):-. |
| APA | Oakes, RJ,Yang, JM,Young, BL,&Oakes, RJ , Northwestern Univ, Dept Phys & Astron, Evanston, IL 60208 USA..(2000).Implications of LEP and SLD data for new physics in Zb(b)over-bar couplings.PHYSICAL REVIEW D,61(7),-. |
| MLA | Oakes, RJ,et al."Implications of LEP and SLD data for new physics in Zb(b)over-bar couplings".PHYSICAL REVIEW D 61.7(2000):-. |
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。