Analysis of $Δ^{+}(1232)$ Isobar Observables, with Improved Quark Distribution Amplitudes

Details Analysis of $Δ^{+}(1232)$ Isobar Observables, with Improved Quark Distribution Amplitudes Analysis of $Δ^{+}(1232)$ Isobar Observables, with Improved Quark Distribution Amplitudes

1992-11-16

arxiv.org/abs/hep-ph/9211251v1

Phys.Lett. B304 (1993) 24-28

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, RUB-TPII-22/92 Preprint

Scientific paper

10.1016/0370-2693(93)91393-2

A model distribution amplitude for the $\Delta^{+}(1232)$ 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 $\gamma p\Delta^{+}$ is calculated modeling the proton by selected distribution amplitudes. Furthermore, predictions are made for some exclusive charmonium decays into $\Delta\bar{\Delta}$. The obtained results are compared with other theoretical models and with the available data.

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