6533b7d6fe1ef96bd12667b0

RESEARCH PRODUCT

Heavy quark symmetry constraints on semileptonic form factors and decay widths of doubly heavy baryons

J. M. Verde-velascoJuan Luis NievesE. Hernández

subject

QuarkSemileptonic decayPhysicsParticle physicsNuclear and High Energy PhysicsNuclear TheoryHigh Energy Physics::LatticeNuclear TheoryHigh Energy Physics::PhenomenologyQuark modelFOS: Physical sciencesFísicaSymmetry (physics)Nuclear Theory (nucl-th)BaryonHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)Heavy quark effective theoryHigh Energy Physics::ExperimentSpin symmetryNuclear ExperimentNuclear theory

description

We show how heavy quark symmetry constraints on doubly heavy baryon semileptonic decay widths can be used to test the validity of different quark model calculations. The large discrepancies in the results observed between different quark model approaches can be understood in terms of a severe violation of heavy quark spin symmetry constraints by some of those models.

yearjournalcountryeditionlanguage
2007-10-05Physics Letters B
10.1016/j.physletb.2008.03.072http://dx.doi.org/10.1016/j.physletb.2008.03.072