Strong decays of $P-$wave doubly charmed and bottom baryons

TL;DR

This paper studies the strong decay properties of P-wave excited doubly heavy baryons using a constituent quark model, predicting narrow states likely observable in future experiments and analyzing symmetry behaviors.

Contribution

It provides the first detailed analysis of strong decays of P-wave doubly heavy baryons, highlighting decay widths, suppression mechanisms, and symmetry preservation.

Findings

Some states are predicted to be narrow and detectable.

Light meson emissions are highly suppressed for certain states.

Strong decay behaviors align with heavy superflavor symmetry.

Abstract

In this work, we investigate the strong decays for $P-$wave excited states of doubly charmed and bottom baryons in the constituent quark model. Our results indicate that some $\lambda-$mode $\Xi_{cc/bb}(1P)$ and $\Omega_{cc/bb}(1P)$ states are relatively narrow, which are very likely to be discovered by future experiments. The light meson emissions for the low-lying $\rho-$mode states are highly suppressed due to the orthogonality of wave functions between initial and final states. Moreover, the strong decay behaviors for doubly charmed and bottom baryons preserve the heavy superflavor symmetry well, where the small violation originates from the finite heavy quark masses and different phase spaces. We hope that present theoretical results for undiscovered doubly charmed and bottom baryons can provide helpful information for future experiments and help us to better understand the heavy quark symmetry.