b \rightarrow s \gamma AND Z \rightarrow b \overline{b} IN TECHNICOLOR WITH SCALARS

• Main Authors: Carone, Christopher D, Simmons, Elizabeth H, Su, Yumian
• Format: Journal Article
• Language: English
• Published: 06.10.1994
• Subjects: Physics - High Energy Physics - Phenomenology
• DOI: 10.48550/arxiv.hep-ph/9410242

Phys.Lett. B344 (1995) 287-292 We consider the radiative decay $b\rightarrow s \gamma$, and the correction to the $Zb\overline{b}$ vertex in technicolor models with scalars. In these models, the scalar develops a vacuum expectation value when the technifermions condense, and the ordinary fermions develop masses via Yukawa couplings. Since the symmetry breaking sector involves both a fundamental scalar doublet and an isotriplet of composite scalars (the technipions), the phenomenology associated with the charged scalars is similar to that found in a type-I two-Higgs doublet model. We show that the correction to the $Zb\overline{b}$ vertex is small over the allowed parameter space of the model in the two limits that we consider, and that there can be large, potentially observable, contributions to the $b\rightarrow s \gamma$ branching fraction.