Photodisintegration of the deuteron in the few GeV region using asymptotic amplitudes

Details Photodisintegration of the deuteron in the few GeV region using asymptotic amplitudes Photodisintegration of the deuteron in the few GeV region using asymptotic amplitudes

1999-04-21

arxiv.org/abs/nucl-th/9904058v1

Phys.Lett. B456 (1999) 9-15

Physics

Nuclear Physics

Nuclear Theory

10 pages, 3 figures, to appear in Physics Letters B

Scientific paper

10.1016/S0370-2693(99)00430-X

Exclusive photodisintegration of the deuteron in the 1-4GeV range is described in terms of a simple covariant and gauge invariant approach using an effective counting rule as the hard part of the d-np vertex. At a scattering angle of theta_cm=90 degrees a prescaling behavior of the differential cross section proportional to 1/s^(n-2) with n ~ 12 is obtained; going away from 90 degrees the value of n decreases slowly, in qualitative agreement with the recent data.

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