6533b825fe1ef96bd128207f
RESEARCH PRODUCT
Two-meson cloud contribution to the baryon antidecuplet self-energy
José R. PeláezTetsuo HyodoM. J. Vicente VacasFelipe J. Llanes-estradaAtsushi HosakaEulogio Osetsubject
PhysicsNuclear and High Energy PhysicsParticle physicsMesonNuclear Theorybusiness.industryNuclear TheoryFOS: Physical sciencesFísicaCloud computingStrangenessBaryonNuclear physicsNuclear Theory (nucl-th)High Energy Physics - PhenomenologyPionHigh Energy Physics - Phenomenology (hep-ph)Self-energyNucleonbusinessNuclear ExperimentNuclear theorydescription
We study the self-energy of the SU(3) antidecuplet coming from two-meson virtual clouds. Assuming that the exotic Theta+ belongs to an antidecuplet representation with N(1710) as nucleon partner, we derive effective Lagrangians that describe the decay of N(1710) into N pi pi with two pions in s- or p-wave. It is found that the self-energies for all members of the antidecuplet are attractive, and the larger strangeness particle is more bound. From two-meson cloud, we obtain about 20 % of the empirical mass splitting between states with different strangeness.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2005-01-13 |