Heavy Antiquark Pentaquarks in the CM and GB Models

Abstract

The splittings between positive parity pentaquarks containing a single heavy (c,b) antiquark and four light (u,d) quarks are investigated in models having spin-dependent interactions generated by either effective Goldstone boson exchange or effective color magnetic exchange. Model-independent features of these splittings are emphasized. Overlaps to the ``fall-apart'' decay configurations ND, ND* or NB, NB*, relevant to decay couplings for the various 2-body pentaquark decays, are also computed.

Comments: 4 pages. Prepared for the Proceedings of MENU'04, Beijing, Aug. 29-Sept. 04, 2004