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Oakes, RJ; Yang, JM; Young, BL; Oakes, RJ , Northwestern Univ, Dept Phys & Astron, Evanston, IL 60208 USA.
Implications of LEP and SLD data for new physics in Zb(b)over-bar couplings
Source PublicationPHYSICAL REVIEW D
KeywordTop-quark Production Parity-violating Supersymmetry W-gluon Fusion Fermilab-tevatron R-parity Standard Model Yukawa Corrections 3rd-family Quarks Z-resonance Z-decays
AbstractThe 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.
2000
ISSN0556-2821
Volume61Issue:7Pages:-
Subject AreaPhysics
Indexed BySCI
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/12993
Collection理论物理所科研产出_SCI论文
Corresponding AuthorOakes, RJ , Northwestern Univ, Dept Phys & Astron, Evanston, IL 60208 USA.
Recommended Citation
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):-.
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