Superconvergence and the Y0(1405)BP coupling

Biswas, S. N. ; Bose, Subir ; Datta, K. ; Dhar, J. ; Saxena, R. P. (1968) Superconvergence and the Y0(1405)BP coupling Physical Review, 165 (5). pp. 1788-1790. ISSN 0031-899X

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We consider fixed-momentum-transfer dispersion relations for the process K- +N→Σ+π. Under the assumption that the asymptotic behavior of the amplitude at high energies is governed by the Regge trajectories in the crossed t channel K+π→Σ-+N, we obtain a sum rule which allows us to estimate the Y0BP coupling. The calculated value agrees well with the estimate by Dalitz, Wong, and Rajasekharan, and that by Das and Mahanthappa.

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