6533b85dfe1ef96bd12bddba
RESEARCH PRODUCT
String dynamics and metastability of fully-heavy tetraquarks
Javier VijandeA. ValcarceJean-marc Richardsubject
QuarkPhysicsCurrent quarkParticle physics[PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th]Nuclear Theory010308 nuclear & particles physicsBar (music)High Energy Physics::PhenomenologyFOS: Physical sciences01 natural sciencesHigh Energy Physics - ExperimentNuclear Theory (nucl-th)Nuclear physicsHigh Energy Physics - Experiment (hep-ex)High Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)Metastability0103 physical sciencesC++ string handlingHigh Energy Physics::Experiment010306 general physicsdescription
Multiquark states have been advocated to explain recent experimental data in the heavy-light sector, and there are already speculations about multiquarks containing only heavy quarks and antiquarks. With a rigorous treatment of the four-body problem in current quark models, full-charm $(cc\bar c\bar c)$ and full-beauty $(bb\bar b\bar b)$ tetraquarks are found to be unbound. Thus their stability should rely on more subtle effects that are not included in the simple picture of constituent quarks. The case of $(bc\bar b\bar c)$ might be more favorable if the naive color-additive model of confinement is replaced by a string-inspired interaction.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-03-02 |