Corrections to the {ital Zb{bar b}} and {ital Z}{tau}{bar {tau}} vertices in a realistic one-family technicolor model

Journal Article · Wed Nov 01 04:00:00 EST 1995 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.52.5314· OSTI ID:118567

Yue, C; Kuang, Y; Lu, G; Wan, L ^[1]

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1. Physics Department, Henan Normal University, Xin Xiang, Henan 453002 (China)

By means of the effective Lagrangian approach we calculate the vertex corrections to the {ital Zb{bar b}} and {ital Z}{tau}{bar {tau}} vertices from sideways extended technicolor (ETC) boson exchange and diagonal ETC boson exchange in a realistic one-family technicolor (TC) model without exact custodial symmetry. We find that the {ital Z} partial width {Gamma}{sub {ital b}}={Gamma}({ital Z}{r_arrow}{ital b{bar b}}), branching ratio {ital R}{sub {ital b}}, and {tau} asymmetry parameter {ital A}{sub {tau}} increase, all in agreement with present experimental data.

• OSTI ID: 118567
• Journal Information: Physical Review, D, Journal Name: Physical Review, D Journal Issue: 9 Vol. 52; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ASYMMETRY
BOTTOMONIUM
COLOR MODEL
CORRECTIONS
LAGRANGIAN FUNCTION
TAU PARTICLES
VERTEX FUNCTIONS
Z NEUTRAL BOSONS