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Analysis of B s →φ ℓ + ℓ − decay with new-physics effects

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Abstract

The rare B s →φ ℓ + ℓ −decay is investigated by using the most general model-independent effective Hamiltonian for ℓ=μ,τ. The calculated value of Br(B s →φ μ + μ −)=1.92×10−6 is consistent with the experimental upper bound. The dependencies of the branching ratios and polarization asymmetries of leptons and combined lepton–antilepton asymmetries on the new Wilson coefficients are presented. The analysis shows that the branching ratios and the lepton-polarization asymmetries are very sensitive to scalar- and tensor-type interactions. The results obtained in this work will be very useful in searching new physics beyond the standard model.

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Authors and Affiliations

  1. The J. Stefan Institute, Jamova 39, P.O. Box 300, 1001, Ljubljana, Slovenia

    U. O. Yilmaz

  2. Physics Department, Mersin University, 33343, Ciftlikkoy Mersin, Turkey

    U. O. Yilmaz

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  1. U. O. Yilmaz
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Correspondence to U. O. Yilmaz.

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Yilmaz, U.O. Analysis of B s →φ ℓ + ℓ − decay with new-physics effects. Eur. Phys. J. C 58, 555–568 (2008). https://doi.org/10.1140/epjc/s10052-008-0784-2

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  • DOI: https://doi.org/10.1140/epjc/s10052-008-0784-2

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