Decay of the in a quark model

✍ Scribed by A. Hosaka

• Publisher: Elsevier Science
• Year: 2005
• Tongue: English
• Weight: 122 KB
• Volume: 755
• Category: Article
• ISSN: 0375-9474
• DOI: 10.1016/j.nuclphysa.2005.03.046

✦ Synopsis

We study the decay of the pentaquark baryon in a non-relativistic quark model for positive and negative parity Θ + states. The decay amplitudes are expressed as products of a spectroscopic factor and an interaction matrix element. It is shown that relatively narrow widths can be obtained for positive parity states, while the negative parity state of (0s) 5 configuration couples strongly to the KN continuum states leading to very broad widths. It is also pointed out that the width of a 3/2 -state should be strongly suppressed.