Interpretation of the newly observed $\Sigma_b(6097)^{\pm}$ and $\Xi_b(6227)^-$ states as the $P$-wave bottom baryons

TL;DR

This paper interprets newly observed bottom baryons as P-wave states using a constituent quark model, suggesting their quantum numbers and predicting more such states for future detection.

Contribution

It provides a theoretical assignment of the $ ext{Σ}_b(6097)$ and $ ext{Ξ}_b(6227)$ as P-wave bottom baryons, expanding understanding of their structure and quantum numbers.

Findings

$ ext{Σ}_b(6097)$ and $ ext{Ξ}_b(6227)$ are likely P-wave states.

Both favor light spin $j=2$ with $J^P=3/2^-$ or $5/2^-$.

More P-wave bottom baryons are expected to be observed.

Abstract

The strong decays of the $P$-wave $\Sigma_b$, $\Xi_b'$ and $\Omega_b$ baryons are investigated with a constituent quark model in the $j$-$j$ coupling scheme. The results show that the newly observed $\Sigma_b(6097)$ and $\Xi_b(6227)$ states by the LHCb collaboration can be assigned as the $\lambda$-mode $P$-wave singly bottom baryons. Given the heavy quark symmetry, both the $\Sigma_b(6097)$ and $\Xi_b(6227)$ states favor the light spin $j=2$ states with spin-parity numbers $J^P=3/2^-$ or $J^P=5/2^-$. More $P$-wave singly bottom baryons are most likely to be observed in future experiments for their relatively narrow width.