Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2007-10-07
Physics
High Energy Physics
High Energy Physics - Phenomenology
17 pages, 8 figures
Scientific paper
10.1088/1126-6708/2007/12/055
We investigate the influence of the fourth generation quarks on the branching ratio and the CP-asymmetry in B -->\pi \ell^+ \ell^- decay. Taking the |V_{t'd}V_{t'b}| ~ 0.001 with phase about 10 degree, which is consistent with the sin2\phi_1 of the CKM and the B_d mixing parameter \Delta m_{B_d}, we obtain that for both muon and tau 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.
Bashiry V.
Zeynali K.
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