Leading-twist two gluon distribution amplitude and exclusive processes involving eta and eta' mesons

Details Leading-twist two gluon distribution amplitude and exclusive processes involving eta and eta' mesons Leading-twist two gluon distribution amplitude and exclusive processes involving eta and eta' mesons

2002-10-04

arxiv.org/abs/hep-ph/0210079v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, 1 figure (using LATEX with ws-procs9x6.cls); talk presented at the workshop on Exclusive Processes at High Momentum T

Scientific paper

I briefly review the formalism for treating the leading-twist two-gluon states appearing in processes which involve eta and eta' mesons. The constraints on the size of the lowest order Gegenbauer coefficients of the two-gluon distribution amplitude are obtained from the fit to the eta and eta' transition form factor data. The results are applied to chi -> eta eta (eta' eta') decays and deeply virtual electroproduction of eta and eta' mesons.

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