Form factors in B->f0(980) and D->f0(980) transitions from dispersion relations
B. El-Bennich, O. M. A. Leitner, B. Loiseau, J. -P. Dedonder
Abstract
Within the dispersion relation approach we give the double spectral representation for space-like and time-like B-> f0(980) and D-> f0(980) transition form factors in the full q2 range. The spectral densities, being the input of the dispersion relations, are obtained from a triangle diagram in the relativistic quark model.
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