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arXiv · 1002.2712

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

Feng-Kun Guo·Christoph Hanhart·Gang Li·Ulf-G. Meißner·Qiang Zhao
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Abstract

We show that in the transitions psi' -> h_c π^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, Γ(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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Feng-Kun Guo, Christoph Hanhart, Gang Li, Ulf-G. Meißner, Qiang Zhao. 2010-07-27. Novel analysis of the decays psi' -> h_c pi^0 and eta_c'-> chi_{c0} pi^0. https://doi.org/10.1103/physrevd.82.034025

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