Stable heavy pentaquarks in constituent models - Archive ouverte HAL
Article Dans Une Revue Physics Letters B Année : 2017

Stable heavy pentaquarks in constituent models

A. Valcarce
  • Fonction : Auteur
J. Vijande
  • Fonction : Auteur

Résumé

It is shown that standard constituent quark models produce (c¯cqqq) hidden-charm pentaquarks, where c denotes the charmed quark and q a light quark, which lie below the lowest threshold for spontaneous dissociation and thus are stable in the limit where the internal c¯c annihilation is neglected. The binding is a cooperative effect of the chromoelectric and chromomagnetic components of the interaction, and it disappears in the static limit with a pure chromoelectric potential. Their wave function contains color sextet and color octet configurations for the subsystems and can hardly be reduced to a molecular state made of two interacting hadrons. These pentaquark states could be searched for in the experiments having discovered or confirmed the hidden-charm meson and baryon resonances.

Dates et versions

hal-01645885 , version 1 (23-11-2017)

Identifiants

Citer

J.-M. Richard, A. Valcarce, J. Vijande. Stable heavy pentaquarks in constituent models. Physics Letters B, 2017, 774, pp.710-714. ⟨10.1016/j.physletb.2017.10.036⟩. ⟨hal-01645885⟩
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