Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-07-28
Phys.Rev.D83:035017,2011
Physics
High Energy Physics
High Energy Physics - Phenomenology
15 pages, 7 figures; Modification in the text and figures, version is closed to the one accepted for publication in Phys. Rev.
Scientific paper
10.1103/PhysRevD.83.035017
We study the effects of the fourth generation of quarks on the total branching ratio and the lepton polarizations in $\bar{B}_{0}\rightarrow K_{0}^{\ast}(1430)l^{+}l^{-}$($l$ = $\mu $, $\tau $) decay. Taking fourth generation quark mass $m_{t{\prime}}$ of about $400$ to $600$ GeV with the mixing angle $|V_{t^{\prime}b}^{\ast}V_{t^{\prime}s}|$ in the range $(0.05-1.4)\times 10^{-2}$ and using the phase to be $80^{o}$%, it is found that the branching ratio and lepton polarizations are quite sensitive to these fourth generation parameters. In future the experimental study of this decay will give us an opportunity to study new physics effects, precisely, to search for the fourth generation of quarks $% (t^{\prime},b^{\prime})$ in an indirect way.
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