Narrow width pentaquarks

Abstract

A general study of pentaquarks built with four quarks in a L=1 state and an antiquark in S-wave shows that several of such states are forbidden by a selection rule, which holds in the limit of flavour symmetry, to decay into a baryon and a meson final state. We identify the most promising \bar{10} multiplet for the classification of the Theta^+ and Xi^{--} particles recently discovered with the prediction of a narrow width for both of them.

11 pages

References in corpus (2)

• Observation of an Exotic S = -2, Q = -2 Baryon Resonance in Proton-Proton Collisions at the CERN SPS
• A Diquark-Triquark Model for the KN Pentaquark

Cited by in corpus (9)

• Pentaquark Decay Width in QCD Sum Rules
• Isospin Mixing of Narrow Pentaquark States
• Decay width of the pentaquark state ${\Theta }^{+}(1540)$ with QCD sum rules
• Heavy and Light Pentaquark Chiral Lagrangian
• A Selection Rule for Multiquark Decays
• Stable Pentaquarks from Strange Chiral Multiplets
• Calculating loops without loop calculations: NLO computation of pentaquark correlators
• Diquark in Nona-quark States
• b decays: a factory for hidden charm multiquark states