Analysis of B-s -> phi l(+)l(-) decay with new-physics effects

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Yilmaz U. O.

EUROPEAN PHYSICAL JOURNAL C, vol.58, no.4, pp.555-568, 2008 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 58 Issue: 4
  • Publication Date: 2008
  • Doi Number: 10.1140/epjc/s10052-008-0784-2
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.555-568
  • Hacettepe University Affiliated: No


The rare B-s -> phi l(+)l(-) decay is investigated by using the most general model-independent effective Hamiltonian for l=mu,tau. The calculated value of Br(B-s -> phi mu(+)mu(-)) = 1.92x10(-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.