Noncommuting ETC corrections to the Zt{bar t} vertex
- Mehta Research Institute, 10 Kasturba Gandhi Marg, Allahabad-211002 (India)
In this paper we calculate the corrections to Zt{bar t} couplings induced by noncommuting extended technicolor (ETC) interactions. The extra parameters {delta}g{sub L}{sup b}, s{sup 2}, and 1/x of noncommuting ETC models and the usual standard model (SM) parameters will be assumed to be determined from a global fit to the CERN LEP 1 EW data. We find that in the heavy (light) case F{sub L}{sup t} is modified by, at most, 4{percent} (2.8{percent}) relative to its SM value provided {delta}R{sub b}{lt}0.0088. This implies that it will be very difficult to disentangle the ETC corrections from SM corrections to the Zt{bar t} vertex or to probe the effects of noncommuting ETC on Zt{bar t} couplings with the projected Next Linear Collider precision of measuring them. {copyright} {ital 1997} {ital The American Physical Society}
- OSTI ID:
- 562886
- Journal Information:
- Physical Review, D, Journal Name: Physical Review, D Journal Issue: 9 Vol. 55; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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