Probing photon helicity in radiative B decays via charmonium resonance interference

Details Probing photon helicity in radiative B decays via charmonium resonance interference Probing photon helicity in radiative B decays via charmonium resonance interference

2005-09-05

arxiv.org/abs/hep-ph/0509030v3

Phys.Lett.B634:403-407,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

elsart, 11 pages, 4 figures; added comments on strong phase (final version Phys. Lett. B)

Scientific paper

10.1016/j.physletb.2006.02.004

We investigate a new method to probe the helicity of the photon emitted in the b -> s gamma transition. The method relies on the observation of interference effects between two resonance contributions, B -> K*(K gamma) gamma and B -> eta_c(gamma gamma) K or B -> chi_c0(gamma gamma) K to the same final state K gamma gamma. Decays of the type B -> K_res(K gamma) gamma dominate the B -> K gamma gamma yield throughout most of the phase space, and may be accessible at current B meson facilities already.

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