Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2010-02-12
Physics
Nuclear Physics
Nuclear Theory
8 pages, 4 figures, Proc. Hyp-X
Scientific paper
We have studied the structure of K- pp by solving this system in a variational treatment, starting from ansatz that Lambda(1405) is a K-p quasi-bound state, Lambda* with mass 1405 MeV/c2. The structure of K-pp reveals a molecular feature, namely, the K- in an "atomic center", Lambda*, plays a key role in producing strong covalent bonding with the other proton. Deeply bound Kbar nuclear systems are formed by this "super-strong" nuclear force due to migrating real bosons, Kbar, a la Heitler-London-Heisenberg, which overcompensates the stiff nuclear incompressibility. Theoretical background of the Lambda (1405) ansatz is discussed in connection with the double-pole picture of Lambda (1405) based on chiral SU(3) dynamics. Detailed analysis reveals single-pole nature of the observable Lambda (1405). There are two kinds of Sigma pi invariant masses experimentally observable, the usual T22 invariant mass and the conversion T21 invariant mass. It is of vital importance to determine whether the Lambda* mass is 1405 MeV or 1420 MeV. The T21 invariant mass from K- absorption at rest in deuteron can provide decisive information about this Lambda* mass problem.
Akaishi Yoshinori
Obu Mitsuaki
Wada Masanobu
Yamazaki Toshimitsu
No associations
LandOfFree
Single-pole nature of Lambda (1405) and structure of K-pp 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 Single-pole nature of Lambda (1405) and structure of K-pp, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Single-pole nature of Lambda (1405) and structure of K-pp will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-420341