Constraints on Masses of Charged PGBs in Technicolor Model from Decay $b\to s\gamma$

Abstract

In this paper we calculate the contributions to the branching ratio of $B\to X_s\gamma$ from the charged Pseudo-Goldstone bosons appeared in one generation Technicolor model. The current $CLEO$ experimental results can eliminate large part of the parameter space in the $m(P^{\pm })-m(P_8^{\pm })$ plane, and specifically, one can put a strong lower bound on the masses of color octet charged PGBs $P_8^{\pm }$: $m(P_8^{\pm })>400GeV$ at $90\%C.L$ for free $m(P^{\pm })$.

Comments: 9 pages, 3 figures(uuencoded), Minor changes(Type error), to appear in Phys. Rev. D