Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1992-11-16
Phys.Rev.D47:3685-3689,1993
Physics
High Energy Physics
High Energy Physics - Phenomenology
15 pages, RUB-TPII-21/92 Preprint
Scientific paper
10.1103/PhysRevD.47.R3685
We present a new nucleon distribution amplitude which amalgamates features of the Chernyak-Ogloblin-Zhitnitsky model with those of the Gari-Stefanis model. This "heterotic" solution provides the possibility to have asymptotically a small ratio \hbox{$\vert G_{M}^{n}\vert/G_{M}^{p}\le 0.1$}, while fulfilling most of the sum-rule requirements up to the third order. Using this nucleon distribution amplitude we calculate the electromagnetic and weak nucleon form factors, the transition form factor $\gamma p \Delta^{+}$ and the decay widths of the charmonium levels $^3S_{1}$, $^3P_{1}$, and $^3P_{2}$ into $p\bar p$. The agreement with the available data is remarkable in all cases.
Bergmann Marcel
Stefanis N. G.
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