Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1995-04-10
Phys.Rev. D53 (1996) 2781-2788
Physics
High Energy Physics
High Energy Physics - Phenomenology
We have considerably shortened this paper. The bulk of the derivation of the $STUVWX$ formalism has been removed and will be p
Scientific paper
10.1103/PhysRevD.53.2781
We examine the oblique correction phenomenology of one-family Technicolor with light pseudo-Goldstone bosons. From loop calculations based on a gauged chiral lagrangian for Technicolor, we are lead to conclude that even though loops with light Goldstone bosons give a negative contribution to $S$ measured at the $Z$-pole, this effect is not sufficiently large to unambiguously counter the `S-argument' against one-family Technicolor. This result cannot be guessed \apriori, but must be explicitly calculated. Our analysis entails an extended version of the $STU$ oblique parametrization of Peskin and Takeuchi. In principle, this extended formalism ($STUVWX$) must be used when there are light new particles in loops.
Fleming Sean
Maksymyk Ivan
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