Lepton Polarization Asymmetry in B\to\ell^{+}\ell^{-} decay Beyond the Standard Model

Details Lepton Polarization Asymmetry in B\to\ell^{+}\ell^{-} decay Beyond the Standard Model Lepton Polarization Asymmetry in B\to\ell^{+}\ell^{-} decay Beyond the Standard Model

2004-04-22

arxiv.org/abs/hep-ph/0404191v1

Chin.Phys.Lett. 22 (2005) 2201-2203

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages,4 figures

Scientific paper

10.1088/0256-307X/22/9/017

The lepton polarization asymmetry in the B\to\ell^{+}\ell^{-} decay, when one of the leptons is polarized, is investigated using the most general form of the effective Hamiltonian. The sensitivity of the asymmetry to the new Wilson coefficients is studied.Moreover, correlations between the lepton polarization asymmetry and the branching ratio is studied. It is observed that, there are not exist such regions of new Wilson coefficients, which the value of branching ratio coincides with SM result while the lepton polarization does not, i.e new physics effects can be established by studying lepton polarization only.

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