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Chiral doublers of heavy-light baryons

Maciej A. Nowak, Michał Praszałowicz, Mariusz Sadzikowski, and Joanna Wasiluk
Phys. Rev. D 70, 031503(R) – Published 23 August 2004
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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 (0+,1+) as the parity partners of known D and D* 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 Θ̃c0(3099) of yet undiscovered ground-state pentaquark Θc0(2700).

  • Received 26 March 2004

DOI:https://doi.org/10.1103/PhysRevD.70.031503

©2004 American Physical Society

Authors & Affiliations

Maciej A. Nowak1, Michał Praszałowicz1,2, Mariusz Sadzikowski1, and Joanna Wasiluk1

  • 1M. Smoluchowski Institute of Physics, Jagiellonian University, 30-059 Kraków, Reymonta 4, Poland
  • 2Nuclear Theory Group, Brookhaven National Laboratory, Upton, New York 11973-5000, USA

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Vol. 70, Iss. 3 — 1 August 2004

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