$B^- \to K^- χ_{c0}$ decay from charmed meson rescattering

Details $B^- \to K^- χ_{c0}$ decay from charmed meson rescattering $B^- \to K^- χ_{c0}$ decay from charmed meson rescattering

2002-07-04

arxiv.org/abs/hep-ph/0207061v1

Phys.Lett. B542 (2002) 71-79

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTex, 13 pages, 2 eps figures

Scientific paper

We study the process $B^- \to K^- \chi_{c0}$ considering intermediate charmed meson rescattering effects. For this decay mode the naive factorization ansatz would predict a vanishing amplitude. We estimate contributions from the $D^{(*)}_{s} D^{(*)}\to K^- \chi_{c0}$ rescattering amplitudes, and compare the result with recent experimental measurements. We find that rescattering effects are able to produce a large branching ratio consistent with measurements by Belle Collaboration. We also consider rescattering effects in $B^- \to K^- J/\psi$, arguing that they play a similar role in producing a large branching fraction for this colour-suppressed decay mode.

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