Meson-meson scattering: K{anti K}-thresholds and f{sub 0}(980)-a{sub 0}(980) mixing
The authors study the influence of mass splitting between the charged and neutral pions and kaons in the Juelich meson exchange model for {pi}{pi} and {pi}{eta} scattering. The calculations are performed in the particle basis, which permits the use of physical masses for the pseudoscalar mesons and a study of the distinct thresholds associated with the neutral and the charged kaons. Within this model the authors also investigate the isospin violation which arises from the mass splitting and an apparent violation of G-parity in {pi}{pi} scattering which stems from the coupling to the K{anti K} channel. Nonvanishing cross sections for {pi}{pi} {r_arrow} {pi}{sup 0}{eta} indicate a mixing of the f{sub 0}(980) and a{sub 0}(980) states.
- Research Organization:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Organization:
- USDOE Office of Energy Research (ER) (US)
- DOE Contract Number:
- AC05-84ER40150
- OSTI ID:
- 756799
- Report Number(s):
- DOE/ER/40150-1624; JLAB-THY-96-04; KFA-IKP(Th)-1996-09; nucl-th/9609013; TRN: US0003716
- Journal Information:
- Phys.Lett. B390 (1997) 23-28, Other Information: Submitted to Phys.Lett. B390 (1997) 23-28; PBD: 1 Sep 1996
- Country of Publication:
- United States
- Language:
- English
Similar Records
The Scalar Resonances a0/f0(980) at COSY
The {pi}{sub 1}(1400) meson as a K{anti K}{pi}{pi} molecule