Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2006-02-27
Physics
Nuclear Physics
Nuclear Theory
talk given at Particles and Nuclei International Conference (PANIC05), Santa Fe, New Mexico, 24-28 Oct 2005
Scientific paper
10.1063/1.2220305
We perform a five-body calculation for pentaquark $(q^4\bar{q})$ state of $\Lambda(1405)$ as well as the three-body calculations for the ground state baryons and the $\Lambda(1405)$, and two-body calculations for mesons. The hamiltonian, which reproduces reasonably well the energies of ground state baryons ($N,\Lambda,\Sigma,\Xi$ and $\Delta$) and mesons ($\pi,K,\rho,K^\ast$), includes kinetic energy of semi-relativistic form, linear confinement potential, and the simplest form of color-magnetic interaction with Gaussian form factor. Flavor symmetry breaking ($m_s> m_{u,d}$) is taken into account. The energy calculated for $(q^4\bar{q})$ state of $\Lambda(1405)$ is lower than the energy for the $(q^3)$ state. The present result suggests that the $\Lambda(1405)$ is a pentaquark-dominated state if the color-magnetic potential plays a leading role of the quark-quark and quark-antiquark interactions.
Nakamoto Choki
Nemura Hidekatsu
No associations
LandOfFree
Study of Pentaquark and $Λ(1405)$ 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 Study of Pentaquark and $Λ(1405)$, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Study of Pentaquark and $Λ(1405)$ will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-485993