Double-Lepton Polarization Asymmetries in $B_s \rar \phi \ell^+ \ell^-$ Decay in the Fourth-Generation Standard Model

TL;DR

This paper studies how the hypothetical fourth generation of quarks could influence double-lepton polarization asymmetries in the decay of B_s mesons, suggesting these measurements could reveal new physics beyond the Standard Model.

Contribution

It introduces the analysis of fourth-generation effects on polarization asymmetries in B_s decays, highlighting their sensitivity compared to other decay channels.

Findings

Asymmetries are more sensitive to fourth-generation parameters than in B to K decays.

Studying these asymmetries can potentially confirm the existence of a fourth quark generation.

The results suggest a new method for probing physics beyond the Standard Model.

Abstract

In this paper, we investigate the effects of the fourth generation of quarks on the double-lepton polarization asymmetries in the $B_s \rar \phi \ell^+ \ell^-$ decay. It is shown that these asymmetries in $B_s \rar \phi \ell^+ \ell^-$ decay compared with those of $B \rar K \ell^+ \ell^-$ decay are more sensitive to the fourth-generation parameters. We conclude that an efficient way to establish the existence of the fourth generation of quarks could be the study of these asymmetries in the $B_s \rar \phi \ell^+ \ell^-$ decay.