A quark model suggestion against Ds*(2317) and Ds*(2460) as chiral partners of standard Ds

Abstract

This paper presents the first study of mesons with a quark and an antiquark with different and finite masses, in a simple confining and chiral invariant quark-antiquark interaction, leading to spontaneous chiral symmetry breaking and to constituent quarks. In the false chiral invariant vacuum, the chiral partners are degenerate, and tachyons occur in the light-light spectrum. In the true vacuum, most of the standard non-relativistic quark model spectra should be recovered except for the pion and other particular constraints. The calibration problem of chiral quark models is also addressed here. The detailed inspection of the different contributions to the D and Ds masses suggests that the challenging recently observed Ds*(2317) and Ds*(2460) mesons might not fit as global chirally rotated quark-antiquark Ds mesons.

8 pages, 2 tables, 4 figures, longer version

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Cited by in corpus (12)

• Dynamically generated 1^+ heavy mesons
• Axial Resonances in the Open and Hidden Charm Sectors
• Tetraquarks with open charm favor
• Radiative decays of dynamically generated charmed baryons
• The large degeneracy of excited hadrons and quark models
• Microscopic 8-quark study of the antikaon nucleon nucleon systems
• Scalar and axial-vector mesons
• Chiral symmetry breaking in the truncated Coulomb Gauge II. Non-confining power law potentials
• Study of meson properties in quark models (Ph.D. Thesis, University of Pittsburgh, October 2006)
• Exotic hadrons associated with $b$-quark
• Observation of the radiative decay $D_s(2317{)}^{+}\to D_s^{\ast }\gamma$
• The hexaquark-flavoured antiK-N-N state computed microscopically with a clusterized octoquark