6533b82bfe1ef96bd128cd89

RESEARCH PRODUCT

Heavy-quark spin symmetry for charmed and strange baryon resonances

Carmen Garcia-recioLaura TolosLaura TolosJuan NievesLorenzo Luis SalcedoRobertus TimmermansOlena Romanets

subject

DYNAMICSQuarkNuclear and High Energy PhysicsParticle physicsCharmNuclear TheoryMesonNuclear TheoryFOS: Physical sciences01 natural sciencesUnitary stateHeavy-quark spin symmetryNuclear Theory (nucl-th)High Energy Physics - Phenomenology (hep-ph)MESON-EXCHANGE0103 physical sciencesSymmetry breakingNuclear Experiment (nucl-ex)010306 general physicsNuclear ExperimentNuclear ExperimentPhysics010308 nuclear & particles physicsDynamically generated baryon resonancesHigh Energy Physics::PhenomenologyFísicaParity (physics)COUPLED-CHANNELBaryonPseudoscalarHigh Energy Physics - PhenomenologyIsospinHigh Energy Physics::Experiment

description

We study charmed and strange odd-parity baryon resonances that are generated dynamically by a unitary baryon-meson coupled-channels model which incorporates heavy-quark spin symmetry. This is accomplished by extending the SU(3) Weinberg-Tomozawa chiral Lagrangian to SU(8) spin-flavor symmetry plus a suitable symmetry breaking. The model generates resonances with negative parity from the s-wave interaction of pseudoscalar and vector mesons with 1/2(+) and 3/2(+) baryons in all the isospin, spin, and strange sectors with one, two, and three charm units. Some of our results can be identified with experimental data from several facilities, such as the CLEO, Belle, or BaBar Collaborations, as well as with other theoretical models, whereas others do not have a straightforward identification and require the compilation of more data and also a refinement of the model.

yearjournalcountryeditionlanguage
2013-09-20
10.1016/j.nuclphysa.2013.01.033http://hdl.handle.net/10261/125321