Role of quark-quark correlation in baryon structure and non-leptonic weak transitions of hyperons

Details Role of quark-quark correlation in baryon structure and non-leptonic weak transitions of hyperons Role of quark-quark correlation in baryon structure and non-leptonic weak transitions of hyperons

2004-02-02

arxiv.org/abs/nucl-th/0402007v1

Prog.Theor.Phys. 112 (2004) 99-117

Physics

Nuclear Physics

Nuclear Theory

Scientific paper

10.1143/PTP.112.99

We study the role of quark-quark correlation in the baryon structure and, in particular, the hyperon non-leptonic weak decay, which is sensitive to the correlation between quarks in the spin-0 channel. We rigorously solve non-relativistic three-body problem for SU(3) ground state baryons to take into account the quark-pair correlation explicitly. With the suitable attraction in the spin-0 channel, resulting static baryon properties as well as the parity conserving weak decay amplitudes agree with the experimental values. Special emphasis is placed also on the effect of the SU(6) spin-flavor symmetry breaking on the baryon structure. Although the SU(6) breaking effects on the local behavior of the quark wave functions are considerable due to the spin-0 attraction, the calculated magnetic moments are almost the same as the naive SU(6) expectations.

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