Two photon width of heavy pseudoscalar mesons

Details Two photon width of heavy pseudoscalar mesons Two photon width of heavy pseudoscalar mesons

2002-10-21

arxiv.org/abs/hep-ph/0210279v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

To appear in the proceedings of ``First international Workshop on Frontier Science, October 6-11, 2002 INFN Laboratory, Frasca

Scientific paper

We discuss the partial width of the pseudoscalar charmonium state eta_c and
bottomonium state eta_b into two photons. Predictions from potential models are
examined and compared with experimental values for the eta_c case. Through the
NRQCD factorisation procedure results for eta_c are also compared with those
from J/psi data, and results for eta_b to the Upsilon decay data.

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