Kroll, P. (2017) A study of the gamma*-f(0)(980) transition form factors. EUROPEAN PHYSICAL JOURNAL C, 77 (2): 95. ISSN 1434-6044, 1434-6052
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The gamma*-f(0)(980) transition form factors are calculated within the QCD factorization framework. The f(0)-meson is assumed to bemainly generated through its s (s) over bar Fock component. The corresponding spin wave function of the f(0)(980) meson is constructed and, combined with a model light-cone wave function for this Fock component, used in the calculation of the form factors. In the real-photon limit the results for the transverse form factor are compared to the large momentum-transfer data measured by the BELLE collaboration recently. It turns out that, for the momentum-transfer range explored by BELLE, the collinear approximation does not suffice, power corrections to it, modeled as quark transverse moment effects, seem to be needed. Mixing of the f(0) with the sigma(500) is also briefly discussed.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | PSEUDOSCALAR MESONS; EXCLUSIVE PROCESSES; DECAYS; F(0)(980); QCD; ANNIHILATION; QUARKONIUM; COLLISIONS; PHOTON; STATES; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Schäfer > Group Andreas Schäfer |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 14 Dec 2018 13:01 |
| Last Modified: | 18 Feb 2019 11:25 |
| URI: | https://pred.uni-regensburg.de/id/eprint/393 |
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