https://doi.org/10.1140/epjc/s10052-009-1046-7
Regular Article - Theoretical Physics
Study of quark distribution amplitudes of 1S and 2S heavy quarkonium states
Department of Physics, National Kaohsiung Normal University, Kaohsiung, 824, Taiwan
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Received:
31
January
2009
Revised:
17
March
2009
Published online:
26
May
2009
Abstract
In this paper, the quark distribution amplitudes of 1S and 2S heavy quarkonium states are studied in terms of Gaussian-type wave functions. The transverse momenta p ⊥ integrals of the formulae for the decay constant are performed analytically. Then the quark distribution amplitudes are obtained. In addition, the ξ-moments are also calculated. After fixing the relevant parameters appearing in the quark distribution amplitude, the curves of the quark distribution amplitude for 1S and 2S heavy quarkonium states are plotted. Finally, the numerical results of this approach are compared with the other theoretical predictions.
PACS: 13.20.Eb – / 12.39.Ki –
© Springer-Verlag , 2009
