Chiral doubling of heavy-light hadrons and the vector manifestation of hidden local symmetry
- Department of Physics, Nagoya University, Nagoya, 464-8602 (Japan)
- Service de Physique Theorique, CEA Saclay, 91191 Gif-sur-Yvette (France)
Starting with a hidden local symmetry Lagrangian at the vector manifestation (VM) fixed point that incorporates heavy-quark symmetry and matching the bare theory to QCD, we calculate the splitting of chiral doublers of heavy-light mesons proposed by Nowak, Rho, and Zahed [M. A. Nowak, M. Rho, and I. Zahed, Phys. Rev. D 48, 4370 (1993).] and Bardeen and Hill [W. A. Bardeen and C. T. Hill, Phys. Rev. D 49, 409 (1994).]. We show, in the three-flavor chiral limit, that the splitting is directly proportional to the light-quark condensate <qq> and comes out to be {approx}(1/3)m{sub N} where m{sub N} is the nucleon mass, implying that the splitting vanishes in the chiral limit at the chiral restoration point--temperature T{sub c}, density n{sub c}, or number of flavors N{sub f}{sup c}. The result turns out to be surprisingly simple with the vector ({rho}) meson playing the crucial role in quantum corrections, pointing to the relevance of the VM to QCD in the way chiral symmetry is manifested in hadronic matter. We also make predictions on the hadronic decay processes of the excited heavy- (charm) light mesons D.
- OSTI ID:
- 20705326
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 70, Issue 7; Other Information: DOI: 10.1103/PhysRevD.70.074002; (c) 2004 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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