The Effects of Fourth Generation on the double Lepton Polarization in B \rar K \ell^+ \ell^- decay

Abstract

This study investigates the influence of the fourth generation quarks on the double lepton polarizations in B \rar K \ell^+ \ell^- decay. Taking |V_{t's}V_{t'b}|\sim \{0.01-0.03\} with phase about 100^\circ, which is consistent with the b\to s\ell^+\ell^- rate and the B_s mixing parameter Delta m_{B_s}$, we obtain that the double lepton(muon and tau) polarizations are quite sensitive to the existence of fourth generation. It can serve as a good tool to search for new physics effects, precisely, to indirect search for the fourth generation quarks(t', b').

30 pages, 27 figures

References in corpus (2)

• Fourth Generation CP Violation Effect on B -> K pi, phi K and rho K in NLO PQCD
• Double Lepton Polarization in ${\Lambda }_b-->\Lambda l^{+}{l}^{-}$ Decay in the Standard Model with Fourth Generations Scenario

Cited by in corpus (2)

• Double-Lepton Polarization Asymmetries and Branching Ratio in $B \rar K_{0}^{*}(1430) l^+ l^- $ transition from Universal Extra Dimension Model
• Double-Lepton Polarization Asymmetries in $B_s \rar ϕ\ell^+ \ell^-$ Decay in the Fourth-Generation Standard Model