Braun, V. M. and Lenz, A. and Peters, G. and Radyushkin, A. V. (2006) Light cone sum rules for gamma N-*->Delta transition form factors. PHYSICAL REVIEW D, 73 (3): 034020. ISSN 2470-0010, 2470-0029
Full text not available from this repository.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.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | GENERALIZED PARTON DISTRIBUTIONS; LARGE MOMENTUM-TRANSFER; TWIST DISTRIBUTION AMPLITUDES; N-DELTA TRANSITION; QUANTUM CHROMODYNAMICS; EXCLUSIVE PROCESSES; PERTURBATIVE QCD; QUARK-MODEL; TRANSVERSE-MOMENTUM; ASYMPTOTIC-BEHAVIOR; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Braun > Group Vladimir Braun |
| Depositing User: | Petra Gürster |
| Date Deposited: | 11 Feb 2021 17:15 |
| Last Modified: | 11 Feb 2021 17:15 |
| URI: | https://pred.uni-regensburg.de/id/eprint/35019 |
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