6533b7ddfe1ef96bd12752b6
RESEARCH PRODUCT
The non-perturbative unquenched quark model
D.r. EnternFrancisco FernándezPablo G. Ortegasubject
PhysicsParticle physicsTop quark010308 nuclear & particles physicsHigh Energy Physics::LatticePhysicsQC1-999Quark modelNuclear TheoryHigh Energy Physics::PhenomenologyTop quark condensateQuarkonium01 natural sciencesBottom quark0103 physical sciencesB mesonHigh Energy Physics::ExperimentNon-perturbative010306 general physicsNuclear ExperimentX(3872)description
In recent years states in the quarkonium spectrum not expected in the naive quark model have appeared and created a lot of interest. In the theoretical side the study of the effect of meson-meson thresholds in the spectrum have been performed in different approximations. In a quark model framework, and in the spirit of the Cornell model, when a meson-meson threshold is included, the coupling to all the quark-antiquark states have to be considered. In practice only the closest states are included perturbatively. In this contribution we will present a framework in which we couple quark-antiquark states with meson-meson states non-perturbatively, taking into account effectively the coupling to all quark-antiquark states. The method will be applied to the study of the X (3872) and a comparison with the perturbative calculation will be performed.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-01-01 | EPJ Web of Conferences |