Heavy Baryons and Exotics Spectrum
arXiv:1109.3472
Abstract
We discuss several highly accurate theoretical predictions for masses of baryons containing the b quark which have been recently confirmed by experimental data. Several predictions are given for additional properties of heavy baryons. We also discuss the two charged exotic resonances Z_b with quantum numbers of a (b bbar u ddbar) tetraquark, very recently reported by Belle in the channel [Upsilon(nS) π^+, n=1,2,3]. Among possible implications are deeply bound I=0 counterparts of the Z_b-s and existence of a Sigma_b^+ Sigma_b^- dibaryon, a "beauteron".
Invited talk at Hadron 2011, the XIV International Conference on Hadron Spectroscopy, 13-17 June 2011, Munich, Germany; 8 pages, 1 figure
References in corpus (8)
- Is X(3872) a molecule?
- Observation of the Omega_b^- and Measurement of the Properties of the Xi_b^- and Omega_b^-
- The New Sigma_b multiplet, heavy baryon mass predictions, meson-baryon universality and magnetic moments of Lambda_c and Lambda_b
- Possibility of Exotic States in the Upsilon system
- Testing confining potentials through meson/baryon hyperfine splitting ratio
- New Quark Relations for Hadron Masses and Magnetic Moments - A Challenge for Explanation from QCD
- Predictions for masses of Xi_b baryons
- Predictions for masses of bottom baryons