The Effective $\eta^\prime g^* g^*$ Vertex at Arbitrary Gluon Virtualities
Abstract
The effective $\eta^\prime g^* g^*$ vertex is studied in the standard (BrodskyLepage) and modified hard scattering approaches for arbitrary gluon virtualities in the timelike and spacelike regions. The contribution of the gluons in the $\eta^\prime$meson is taken into account, and the wavefunction is constrained using data on the electromagnetic transition form factor of the $\eta^\prime$ meson. Our results have implications for the inclusive decay $B \to \eta^\prime X$ and exclusive decays, such as $B \to \eta^\prime (K, K^*)$, and in hadronic production processes $N + N (\bar N) \to \eta^\prime X$.
 Publication:

arXiv eprints
 Pub Date:
 December 2001
 arXiv:
 arXiv:hepph/0112048
 Bibcode:
 2001hep.ph...12048A
 Keywords:

 High Energy Physics  Phenomenology
 EPrint:
 19 pages, 6 figures (requires amssymb, epsf)