Technicolor contribution to the [ital Zb[bar b]] vertex correction from the spectral representation

Journal Article · Sat Apr 01 04:00:00 EST 1995 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.51.3557· OSTI ID:6474508

Mahanta, U ^[1]

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1. Mehta Research Institute, 10, Kasturba Gandhi Marg, Allahabad-211002 (India)

In this paper we calculate the technicolor contribution to the [ital Zb[bar b]] vertex correction by using the spectral representation of two point vector and axial vector correlators. Our calculation shows that in the ordinary as well as in the walking technicolor scenario the major contribution to the vertex correction comes from the Goldstone pole in the axial vector channel. We find that in the ordinary technicolor scenario the ETC interaction that produces a large top mass (e.g., [ital m][sub [ital t]][approx]100 GeV) will also produce observable effects at CERN LEP through the [ital Zb[bar b]] vertex, whereas the corresponding effect for the walking technicolor scenario may be barely (or may not be) observable with the present LEP precision.

• OSTI ID: 6474508
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 51:7; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

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BEAUTY PARTICLES
BOSONS
COLOR MODEL
COMPOSITE MODELS
CORRECTIONS
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GOLDSTONE BOSONS
INTERMEDIATE BOSONS
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QUARK MODEL
VERTEX FUNCTIONS
Z NEUTRAL BOSONS