Shifting $R_b$ with $A_{FB}^b$

Abstract

Precision measurements at the $Z$ resonance agree well with the standard model. However, there is still a hint of a discrepancy, not so much in $R_b$ by itself (which has received a great deal of attention in the past several years) but in the forward-backward asymmetry $A_{FB}^b$ together with $R_b$. The two are of course correlated. We explore the possibilty that these and other effects are due to the mixing of $b_L$ and $b_R$ with one or more heavy quarks.

11 pages, 1 Figure, LaTex file

References in corpus (1)

• Electroweak Precision Tests: A Concise Review

Cited by in corpus (10)

• Beautiful Mirrors and Precision Electroweak Data
• Constraints on top couplings in models with exotic quarks
• The $Z\to b\bar{b}$ Decay Asymmetry and Left-Right Models
• Alternative Interpretation of the Tevatron Top Events
• Fitting Precision Electroweak Data with Exotic Heavy Quarks
• $A_{FB}^b$ and $R_b$ at LEP and New Right-Handed Gauge Bosons
• Unparticle Physics and A_{FB}^b on the Z pole
• Probing anomalous right--handed current in Z b bbar vertex
• Implications of LEP/SLD Data for New Physics in Zbb_bar Couplings
• Vector-like Quark Interpretation of Excess in Higgs Signal Strength