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Dimension-six CP-conserving operators of the third-family quarks and their effects on collider observables
Whisnant, K; Yang, JM; Young, BL; Zhang, X
1997
发表期刊PHYSICAL REVIEW D
卷号56期号:1页码:467-478
通讯作者IOWA STATE UNIV,INT INST THEORET & APPL PHYS,AMES,IA 50011 ; HENAN NORMAL UNIV,DEPT PHYS,XINXIANG 453002,HENAN,PEOPLES R CHINA ; ACAD SINICA,INST HIGH ENERGY PHYS,BEIJING 100039,PEOPLES R CHINA
摘要We list all possible dimension-six CP-conserving SUc(3)xSU(L)(2)xU(Y)(1)-invariant operators involving the third-family quarks which could be generated by new physics at a higher scale. Expressions for these operators after electroweak gauge symmetry breaking and the induced effective couplings Wt(b) over bar, Xb(b) over bar, and Xt(t) over bar (X = Z, gamma,g, H) are presented. Analytic expressions for the tree level contributions of all these operators to the observables R-b and A(FB)(b) at CERN LEP I, sigma(e(+)e(-) --> ) and A(FB)(b) at LEP II, sigma(e(+)e(-) --> ) and A(FB)(t) at the Next Linear Collider (NLC). as well as sigma( --> + X) at the Fermilab Tevatron upgrade, are provided. The effects of these operators on different electroweak observables are discussed and numerical examples presented. Numerical analyses show that in the coupling region allowed by R-b and A(FB)(b) at LEP I, some of the new physics operators can still have significant contributions at LEP II, the Tevatron, and the NLC.
文章类型Article
学科领域Astronomy & Astrophysics; Physics
研究领域[WOS]Astronomy & Astrophysics ; Physics
DOI10.1103/PhysRevD.56.467
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语种英语
WOS类目Astronomy & Astrophysics ; Physics, Particles & Fields
WOS记录号WOS:A1997XH85700055
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被引频次:124[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/237604
专题理论物理室
作者单位中国科学院高能物理研究所
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Whisnant, K,Yang, JM,Young, BL,et al. Dimension-six CP-conserving operators of the third-family quarks and their effects on collider observables[J]. PHYSICAL REVIEW D,1997,56(1):467-478.
APA Whisnant, K,Yang, JM,Young, BL,&Zhang, X.(1997).Dimension-six CP-conserving operators of the third-family quarks and their effects on collider observables.PHYSICAL REVIEW D,56(1),467-478.
MLA Whisnant, K,et al."Dimension-six CP-conserving operators of the third-family quarks and their effects on collider observables".PHYSICAL REVIEW D 56.1(1997):467-478.
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