Physics – Nuclear Physics – Nuclear Theory
Scientific paper
1995-11-10
Nucl.Phys. A608 (1996) 243-304
Physics
Nuclear Physics
Nuclear Theory
51 pages, Latex file, figures available from M.Hoffmann@kfa-juelich.de
Scientific paper
10.1016/0375-9474(96)00256-4
A dynamical model for correlated two-pion and two-kaon exchange in the baryon- baryon interaction is presented, both in the scalar-isoscalar ($\sigma$) and the vector-isovector ($\rho$) channel. The correlations between the two pseudoscalar mesons are taken into account by means of $\pi\pi - K\bar K$ amplitudes derived from a meson-exchange model, which is in line with the empirical $\pi\pi$ data. It is found that correlated $K\bar K$ exchange plays an important role in the $\sigma$-channel for baryon-baryon states with non- vanishing strangeness. The strength of correlated $\pi\pi$ plus $K\bar K$ exchange in the $\sigma$-channel decreases with the strangeness of the baryon- baryon system becoming more negative. The results for correlated $\pi\pi$- exchange in the vector-isovector channel deviate from what is expected in the naive SU(3) picture for genuine $\rho$-exchange. Shortcomings of a simplified description in terms of sharp mass $\sigma$- and $\rho$-exchange are pointed out.
Holinde K.
Kim Hyun-Chul
Reuber A.
Speth Josef
No associations
LandOfFree
Correlated $ππ$ and $K\bar K$ exchange in the baryon-baryon interaction does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Correlated $ππ$ and $K\bar K$ exchange in the baryon-baryon interaction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Correlated $ππ$ and $K\bar K$ exchange in the baryon-baryon interaction will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-190019