The possible hidden-charm molecular baryons composed of anti-charmed meson and charmed baryon

TL;DR

This paper investigates the potential existence of loosely bound hidden-charm molecular baryons formed by anti-charmed mesons and charmed baryons using the one-boson-exchange model, predicting specific states that could exist.

Contribution

It is the first study to systematically analyze the possible hidden-charm molecular baryons composed of anti-charmed mesons and charmed baryons with numerical predictions.

Findings

Existence of $oldsymbol{ ext{Σ}_car{ ext{D}}^*}$ states with various quantum numbers.

Existence of a $oldsymbol{ ext{Σ}_car{ ext{D}}}$ state with specific quantum numbers.

Non-existence of $oldsymbol{ ext{Λ}_car{ ext{D}}}$ and $oldsymbol{ ext{Λ}_car{ ext{D}}^*}$ molecular states.

Abstract

With the one-boson-exchange model we have studied the possible existence of the very loosely bound hidden-charm molecular baryons composed of anti-charmed meson and charmed baryon. Our numerical results indicate that there exist $\Sigma_c\bar{D}^*$ states with $I(J^P)=1/2(1/2^-), 1/2(3/2^-), 3/2(1/2^-), 3/2(3/2^-)$ and $\Sigma_c\bar{D}$ state with $3/2(1/2^-)$. But the $\Lambda_c \bar{D}$ and $\Lambda_c \bar{D}^*$ molecular states do not exist.