Pion induced Reactions for Charmed Baryons

TL;DR

This paper investigates pion-induced reactions for producing charmed baryons, comparing charm and strangeness production rates, and finds that excited charmed states are produced more readily than expected, contrasting with strangeness production.

Contribution

It introduces a combined Regge and quark-diquark model approach to analyze charm production, highlighting unique features of charm excitation at large momentum transfer.

Findings

Charm production rates are comparable to strangeness rates.

Excited charmed baryons are not suppressed in production.

Charm production exhibits distinct features from strangeness due to large momentum transfer.

Abstract

We study pion induced reactions for charmed baryons $B$, $\pi$ + N $\rightarrow$ $D^*$ + $B$. First we estimate charm production rates in comparison with strangeness production using a Regge model which is dominated by vector ($D^*$ or $K^*$ ) Reggeon exchange. Then we examine the production rates of various charmed baryons $B$ in a quark-diquark model. We find that the production of excited states are not necessarily suppressed, a sharp contrast to strangeness production, which is a unique feature of the charm production with a large momentum transfer.