Calculation of pure annihilation type decay $B^+ \to D_s^+ φ$

Details Calculation of pure annihilation type decay $B^+ \to D_s^+ φ$ Calculation of pure annihilation type decay $B^+ \to D_s^+ φ$

2001-12-09

arxiv.org/abs/hep-ph/0112127v1

Eur.Phys.J.C24:121-126,2002

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, including 1 figure, revtex4

Scientific paper

10.1007/s100520200929

The rare decay $B^+ \to D_s^+ \phi$ can occur only via annihilation type diagrams in the standard model. We calculate this decay in perturbative QCD approach with Sudakov resummation. We found that the branching ratio of $B^+ \to D_s^+ \phi$ is of order $10^{-7}$ which may be measured in the near future by KEK and SLAC $B$ factories. The small branching ratio predicted in standard model makes this channel sensitive to new physics contributions.

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