Novel analysis of the decays ${\ensuremath{\psi}}^{\ensuremath{'}}\ensuremath{\rightarrow}{h}_{c}{\ensuremath{\pi}}^{0}$ and ${\ensuremath{\eta}}_{c}^{\ensuremath{'}}\ensuremath{\rightarrow}{\ensuremath{\chi}}_{c0}{\ensuremath{\pi}}^{0}$

Novel analysis of the decays $ψ^{'} \to h_{c} π^{0}$ and $η_{c}^{'} \to χ_{c 0} π^{0}$

Feng-Kun Guo, Christoph Hanhart, Gang Li, Ulf-G. Meißner, and Qiang Zhao

Phys. Rev. D 82, 034025 – Published 19 August 2010

Abstract

We show that in the transitions $ψ^{'} \to h_{c} π^{0}$ and $η_{c}^{'} \to χ_{c 0} π^{0}$ the contributions from charmed-meson loops are highly suppressed, in contrast to various other charmonium decays. We calculate the width of the $ψ^{'} \to h_{c} π^{0}$ , which agrees with the recent BES-III data, and predict the width of the $η_{c}^{'} \to χ_{c 0} π^{0}$ , $Γ (η_{c}^{'} \to χ_{c 0} π^{0}) = 1.5 \pm 0.4 keV$ . A confirmation of this prediction would also provide additional support for a recent analysis of $ψ^{'} \to J / ψ π^{0} (η)$ , where loops are claimed to play a prominent role.

Received 28 June 2010

DOI:https://doi.org/10.1103/PhysRevD.82.034025

Authors & Affiliations

Feng-Kun Guo¹, Christoph Hanhart^1,2, Gang Li^3,4, Ulf-G. Meißner^1,2,5, and Qiang Zhao^3,6

¹Institut für Kernphysik and Jülich Center for Hadron Physics, Forschungszentrum Jülich, D-52425 Jülich, Germany
²Institute for Advanced Simulation, Forschungszentrum Jülich, D-52425 Jülich, Germany
³Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
⁴Department of Physics, Qufu Normal University, Qufu, 273165, China
⁵Helmholtz-Institut für Strahlen- und Kernphysik and Bethe Center for Theoretical Physics, Universität Bonn, D-53115 Bonn, Germany
⁶Theoretical Physics Center for Science Facilities, CAS, Beijing 100049, China

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Vol. 82, Iss. 3 — 1 August 2010

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Physical Review D

covering particles, fields, gravitation, and cosmology

Novel analysis of the decays $ψ^{'} \to h_{c} π^{0}$ and $η_{c}^{'} \to χ_{c 0} π^{0}$

Feng-Kun Guo, Christoph Hanhart, Gang Li, Ulf-G. Meißner, and Qiang Zhao

Phys. Rev. D 82, 034025 – Published 19 August 2010

Abstract

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Physical Review D

covering particles, fields, gravitation, and cosmology

Novel analysis of the decays ψ′→hcπ0 and ηc′→χc0π0

Feng-Kun Guo, Christoph Hanhart, Gang Li, Ulf-G. Meißner, and Qiang Zhao

Phys. Rev. D 82, 034025 – Published 19 August 2010

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Novel analysis of the decays $ψ^{'} \to h_{c} π^{0}$ and $η_{c}^{'} \to χ_{c 0} π^{0}$