Evidence of N*(1535) resonance contribution in the pn->d\phi reaction

TL;DR

This paper investigates the role of the N*(1535) resonance in the pn->d extphi reaction using an effective Lagrangian model, highlighting dominant meson exchanges and explaining experimental data.

Contribution

It provides the first detailed analysis of N*(1535) resonance contributions to this reaction, emphasizing the significance of ho- and extpi-meson exchanges.

Findings

ho- and extpi-meson exchanges dominate the reaction.

Theoretical results match experimental cross sections and angular distributions.

Supports the large sar{s} component in N*(1535) leading to OZI rule violation.

Abstract

The N*(1535) resonance contributions to the pn->d\phi reaction are evaluated in an effective Lagrangian model. The \pi-, \eta-, and \rho-meson exchange are considered. It is shown that the contributions from \pi- and \rho-meson exchange are dominant, while the contribution from \eta-meson exchange is negligibly small. Our theoretical results reproduce the experimental data of both total cross section and angular distribution well. This is another evidence that the N*(1535) resonance has large s\bar{s} component leading to a large coupling to N\phi, which may be the real origin of the OZI rule violation in the \piN and pN reactions.