A perturbative approach to the eta_c-gamma transition form factor

Preprint

1 September 1997

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.hep-ph/9709203

Abstract

The eta_c-gamma transition form factor is calculated within a perturbative approach. For the eta_c-meson, a wave function of the Bauer-Stech-Wirbel type is used where the two free parameters, namely the decay constant f(eta_c) and the transverse size of the wave function, are related to the Fock state probability and the width for the two-photon decay Gamma[eta_c -> gamma gamma]. The Q^2 dependence of the eta_c-gamma transition form factor is well determined.

Keywords

ETA_C GAMMA TRANSITION
TRANSITION FORM FACTOR
PERTURBATIVE APPROACH
GAMMA TRANSITION FORM
DECAY

All Related Versions

Version 1, 1997-09-01, ArXiv
Published version: Physics Letters B, 413 (3-4), 410.

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