Novel analysis of the decays psi' -> h_c pi^0 and eta_c'-> chi_{c0} pi^0

Details Novel analysis of the decays psi' -> h_c pi^0 and eta_c'-> chi_{c0} pi^0 Novel analysis of the decays psi' -> h_c pi^0 and eta_c'-> chi_{c0} pi^0

2010-02-13

arxiv.org/abs/1002.2712v2

Phys.Rev.D82:034025,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, 1 figure. Version accepted for publication in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.82.034025

We show that in the transitions psi' -> h_c \pi^0 and eta_c' -> chi_{c0} pi^0 the contributions from charmed meson loops are highly suppressed, in contrast to various other charmonium decays. We calculate the width of the psi' -> h_c pi^0, which agrees with the recent BES-III data, and predict the width of the eta_c' -> chi_{c0} pi^0, \Gamma(eta_c' -> chi_{c0} pi^0) = 1.5\pm0.4 keV. A confirmation of this prediction would also provide additional support for a recent analysis of psi' -> J/psi pi^0 (eta), where loops are claimed to play a prominent role.

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