Distribution amplitudes and electroproduction of the delta and other low-lying resonances

Carl E. Carlson and J. L. Poor
Phys. Rev. D 38, 2758 – Published 1 November 1988
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Abstract

Calculations are presented of certain moments of the wave function of the Δ and of the lowest-lying negative-parity resonances. These are used to obtain model distribution amplitudes for these resonances and to calculate the size of the high-Q2 nucleon-resonance transition amplitude for each case. The I=(3/2 resonances are less asymmetric than the I=(1/2 ones, and indeed are compatible with total symmetry and even with being asymptotic; the agreement between calculation and measurement is good for the S11(1535) transition amplitude although inconclusive for the Δ. (For the isoquartet negative-parity ground state, the data presently hardly exist.)

  • Received 2 May 1988

DOI:https://doi.org/10.1103/PhysRevD.38.2758

©1988 American Physical Society

Authors & Affiliations

Carl E. Carlson and J. L. Poor

  • Department of Physics, The College of William and Mary, Williamsburg, Virginia 23185

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Issue

Vol. 38, Iss. 9 — 1 November 1988

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