A Lattice Study of $(\bar{D}_1 D^{*})^\pm$ Near-threshold Scattering

TL;DR

This lattice QCD study investigates low-energy scattering of the $(ar{D}_1 D^{*})^ op$ meson system near threshold, revealing attractive interactions in both s-wave and p-wave channels, and offering insights into possible resonances or bound states.

Contribution

First lattice QCD analysis of near-threshold scattering for the $(ar{D}_1 D^{*})^ op$ system in multiple channels, indicating potential resonance formation.

Findings

Attractive interaction in both s-wave and p-wave channels near threshold

Hints of possible resonances or bound states around the threshold

Provides foundational data for future experimental searches

Abstract

In this exploratory lattice study, low-energy near threshold scattering of the $(\bar{D}_1 D^{*})^\pm$ meson system is analyzed using lattice QCD with $N_f=2$ twisted mass fermion configurations. Both s-wave ($J^P=0^-$) and p-wave ($J^P=1^+$) channels are investigated. It is found that the interaction between the two charmed mesons is attractive near the threshold in both channels. This calculation provides some hints in the searching of resonances or bound states around the threshold of $(\bar{D}_1 D^{*})^\pm$ system.