Abstract
We discuss the consequences of the chiral doubling scenario for baryons built of heavy and light quarks. In particular, we use the soliton description for baryons, demonstrating why each heavy-light baryon should be accompanied by the opposite parity partner. Our argumentation holds both for ordinary baryons and for exotic heavy pentaquarks which are required by the symmetries of QCD to appear in parity doublets, separated by the mass shift of the chiral origin. Interpreting the recently observed by BaBaR, CLEO, and Belle Collaborations charmed mesons with assignment as the parity partners of known D and mesons, allows us to estimate the parameters of the mesonic effective Lagrangian, and in consequence, estimate the masses of ground states and excited states of both parities. In particular, we interpret the state recently reported by the H1 experiment at HERA as a parity partner of yet undiscovered ground-state pentaquark
- Received 26 March 2004
DOI:https://doi.org/10.1103/PhysRevD.70.031503
©2004 American Physical Society