2 research outputs found
Low-lying Pentaquark states in the Inherent Nodal Structure Analysis
The strangeness pentaquark states as clusters are
investigated in this letter. Starting from the inherent geometric symmetry, we
analyzed the inherent nodal structure of the system. As the nodeless states,
the low-lying states are picked out. Then the S-wave state and P-wave state may be the
candidates of low-lying pentaquark states. By comparing the accessibility of
the two states and referring the presently obtained K-N interaction potential,
we propose that the quantum numbers of the observed pentaquark state
may be and L=1.Comment: 15 pages, 2 figures, 4 tables. Revised version with detailed
description, expanded discussion and reference for the geometric
configuration to be proposed being adde
Heavy and Light Pentaquark Chiral Lagrangian
Using the SU(3) flavor symmetry, we construct the chiral Lagrangians for the
light and heavy pentaquarks. The correction from the nonzero quark is taken
into account perturbatively. We derive the Gell-MannOkubo type relations for
various pentaquark multiplet masses and Coleman-Glashow relations for
anti-sextet heavy pentaquark magnetic moments. We study possible decays of
pentaquarks into conventional hadrons. We also study the interactions between
and within various pentaquark multiplets and derive their coupling constants in
the symmetry limit. Possible kinematically allowed pionic decay modes are
pointed out