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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
; | Date: |
18 Oct 2005 | 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 | Source: | arXiv, hep-ph/0510237 | Services: | Forum | Review | PDF | Favorites |
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