On the Nucleon Distribution Amplitude: The Heterotic Solution

Abstract

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{$|G_M^n|/G_M^p\le 0.1$}, 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 ${\hat{I}}^{3}p\hat{I}{”}^{+}$ and the decay widths of the charmonium levels ${}^3{S}_1$, ${}^3{P}_1$, and ${}^3{P}_2$ into $p\bar{p}$. The agreement with the available data is remarkable in all cases.

15 pages, RUB-TPII-21/92 Preprint