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Light Cone Sum Rules for gamma* N -> Delta Transition Form Factors

V. M. Braun·A. Lenz·G. Peters·A. V. Radyushkin
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Abstract

A theoretical framework is suggested for the calculation of gamma* N -> Delta transition form factors using the light-cone sum rule approach. Leading-order sum rules are derived and compared with the existing experimental data. We find that the transition form factors in a several GeV region are dominated by the ``soft'' contributions that can be thought of as overlap integrals of the valence components of the hadron wave functions. The ``minus'' components of the quark fields contribute significantly to the result, which can be reinterpreted as large contributions of the quark orbital angular momentum

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V. M. Braun, A. Lenz, G. Peters, A. V. Radyushkin. 2006-01-25. Light Cone Sum Rules for gamma* N -> Delta Transition Form Factors. https://doi.org/10.1103/physrevd.73.034020

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