6533b7d2fe1ef96bd125f797
RESEARCH PRODUCT
Open-charm meson spectroscopy
Javier VijandeFrancisco FernándezA. Valcarcesubject
QuarkPhysicsNuclear and High Energy PhysicsParticle physicsNuclear TheoryMesonHigh Energy Physics::LatticeNuclear TheoryHigh Energy Physics::PhenomenologyQuark modelFísicaFOS: Physical sciencesHigh Energy Physics - ExperimentNuclear Theory (nucl-th)Nuclear physicsHigh Energy Physics - Experiment (hep-ex)High Energy Physics - PhenomenologyParticle decayHigh Energy Physics - Phenomenology (hep-ph)Bound stateHigh Energy Physics::ExperimentOpen charmSpectroscopyNuclear theorydescription
We present a theoretical framework that accounts for the new $D_J$ and $D_{sJ}$ mesons measured in the open-charm sector. These resonances are properly described if considered as a mixture of conventional $P-$wave quark-antiquark states and four-quark components. The narrowest states are basically $P-$wave quark-antiquark mesons, while the dominantly four-quark states are shifted above the corresponding two-meson threshold, being broad resonances. We study the electromagnetic decay widths as basic tools to scrutiny their nature. The proposed explanation incorporates in a natural way the most recently discovered mesons in charmonium spectroscopy.
year | journal | country | edition | language |
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2006-01-17 | Physical Review D |