Quark model with Hidden Local Symmetry and its application to T_cc

2023/06/06 by He, Bing-Ran, Harada, Masayasu, Zou, Bing-Song · 1 citation
#FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Lattice (hep-lat) #High Energy Physics - Phenomenology (hep-ph)

paper · doi:10.48550/arxiv.2306.03526

Abstract

We propose a chiral quark model including the ω and ρ meson contributions in addition to the π and σ meson contributions. We show that the masses of the ground state baryons such as the nucleon, Λ_c and Λ_b are dramatically improved in the model with the vector mesons compared with the one without them. The study of the tetraquark T_cc is also performed in a coupled channel calculation and the resultant mass is much closer to its experimental value than the result without vector meson contribution. This approach can be applied to the future study of multi-quark systems.

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• Singly heavy tetraquarks

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