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Hard approximation in two-particle hadronic decays of B_c at large recoils

V. V. Kiselev
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Abstract

The two-particle decays of B_c^+ to psi pi^+(rho^+) and B_c^+ to eta_c pi^+(rho^+) are considered in a way taking into account a soft binding of quarks in the heavy quarkonia and a hard gluon exchange between the constituents at large recoil momenta of psi(eta_c). An approximate double enhancement of the amplitudes is found because of the nonspectator t-channel contribution.

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V. V. Kiselev. 2001-10-08. Hard approximation in two-particle hadronic decays of B_c at large recoils. https://arxiv.org/abs/hep-ph/9605451

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