Analysis of Δ+ (1232) isobar observables with improved quark distribution amplitudes
Abstract
A model distribution amplitude for the Δ+ (1232) isobar is proposed, derived on the basis of the QCD sum-rule calculations of Farrar et al. combined with those of Carlson and Poor. The transition form factor γpΔ+ is calculated modeling the proton by selected distribution amplitudes. Furthermore, predictions are made for some exclusive charmonium decays into Δ overlineΔ. The obtained results are compared with other theoretical models and with the available data.
- Publication:
-
Physics Letters B
- Pub Date:
- April 1993
- DOI:
- 10.1016/0370-2693(93)91393-2
- arXiv:
- arXiv:hep-ph/9211251
- Bibcode:
- 1993PhLB..304...24S
- Keywords:
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- High Energy Physics - Phenomenology
- E-Print:
- 15 pages, RUB-TPII-22/92 Preprint