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| Paper IPM / Physic / 8651 |
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| Abstract: | |||||
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We investigate the influence of the fourth generation quarks on
the branching ratio and the CP-asymmetry in B \rar πl+l− decay. Taking the |Vt′dVt′b| ∼ 0.001 with phase
about 10°, which is consistent with the sin2ϕ1 of the
CKM and the Bd mixing parameter ∆mBd, we obtain
that for both (μ, τ) channels the branching ratio, the
magnitude of CP-asymmetry and lepton polarization depict strong
dependency on the 4th generation quarks mass and mixing
parameters. These results can serve as a good tool to search for
new physics effects, precisely, to search for the fourth
generation quarks(t′, b′) via its indirect manifestations in
loop diagrams.
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