Title of article
A perturbative approach to the ηcγ transition form factor
Author/Authors
Thorsten Feldmann، نويسنده , , Peter Kroll، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 1997
Pages
6
From page
410
To page
415
Abstract
The ηcγ transition form factor is calculated within a perturbative approach. For the ηc-meson, a wave function of the Bauer-Stech-Wirbel type is used where the two free parameters, namely the decay constant fηc and the transverse size of the wave function, are related to the Fock state probability and the width for the two-photon decay Γ[ηc → γγ]. The Q2 dependence of the ηcγ transition form factor is well determined.
Keywords
Transition form factor , Hard scattering , eta/c (2980)
Journal title
PHYSICS LETTERS B
Serial Year
1997
Journal title
PHYSICS LETTERS B
Record number
909001
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