Warkentin, N. and Diehl, M. and Ivanov, D. Yu. and Schaefer, A. (2007) Exclusive electroproduction of pion pairs. EUROPEAN PHYSICAL JOURNAL A, 32 (3). pp. 273-291. ISSN 1434-6001, 1434-601X
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We investigate electroproduction of pion pairs on the nucleon in the framework of QCD factorization for hard exclusive processes. We extend previous analyses by taking the hard-scattering coefficients at next-to-leading order in alpha(s) . The dynamics of the produced pion pair is described by two-pion distribution amplitudes, for which we perform a detailed theoretical and phenomenological analysis. In particular, we obtain constraints on these quantities by comparing our results with measurements of angular observables that are sensitive to the interference between two-pion production in the isoscalar and isovector channels.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | GENERALIZED PARTON DISTRIBUTIONS; TO-LEADING ORDER; FORM-FACTOR; MESONS; QCD; NUCLEON; GAMMA; GLUONS; BOSON; DECAY; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Schäfer > Group Andreas Schäfer |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 04 Dec 2020 08:22 |
| Last Modified: | 04 Dec 2020 08:22 |
| URI: | https://pred.uni-regensburg.de/id/eprint/32651 |
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