Eur. Phys. J. C (2009) 61: 451-459
https://doi.org/10.1140/epjc/s10052-009-1004-4

Regular Article - Theoretical Physics

Analysis of various polarization asymmetries in the inclusive b→s ℓ ⁺ ℓ ⁻ decay in the fourth-generation standard model

¹ Engineering Faculty, Cyprus International University, Via Mersin 10, Haspolat-Lefkoşa, North Cyprus, Turkey
² Physics Department, Middle East Technical University, 06531, Ankara, Turkey

^* e-mail: bashiry@ciu.edu.tr

Received: 22 September 2008
Revised: 3 February 2009
Published online: 8 April 2009

Abstract

In this study a systematical analysis of various polarization asymmetries in inclusive b→s ℓ ⁺ ℓ ⁻ decay in the standard model (SM) with four generation of quarks is carried out. We found that the various asymmetries are sensitive to the new mixing and quark masses for both of the μ and τ channels. Sizable deviations from the SM values are obtained. Hence, b→s ℓ ⁺ ℓ ⁻ decay is a valuable tool for searching physics beyond the SM, especially in the indirect searches for the fourth-generation of quarks (t′,b′).