Non-perturbative chiral approach to K−p → γY reactions

✍ Scribed by T.-S.H. Lee; J.A. Oller; E. Oset; A. Ramos

• Publisher: Elsevier Science
• Year: 1998
• Tongue: English
• Weight: 663 KB
• Volume: 643
• Category: Article
• ISSN: 0375-9474
• DOI: 10.1016/s0375-9474(98)00581-8

✦ Synopsis

A recently developed non-perturbative chiral approach to describe the S = -1 meson-baryon reactions has been extended to investigate the near threshold K-p ---, yA,y.~ ° reactions. With the parameters governed by chiral SU(3) symmetry, we show that the predicted branching ratios I'K-p_,yA/FK-p~al I and FK-p~y2o/FK-p~al I are close to the experimental values. The coupling with the 7/ channels, which was shown to be important in the S = -1 meson-baryon reactions, is also found to be significant here. Our results are consistent with the interpretation of the A(1405) as a quasi-bound meson-baryon state as found in other similar chiral approaches. @ 1998 Elsevier Science B.V.