Triquark structure and isospin symmetry breaking in exotic Ds mesons

Details Triquark structure and isospin symmetry breaking in exotic Ds mesons Triquark structure and isospin symmetry breaking in exotic Ds mesons

2007-04-11

arxiv.org/abs/0704.1345v3

Phys.Rev.D76:034009,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

Scientific paper

10.1103/PhysRevD.76.034009

The color anti-triplet triquark $q\bar{q}\bar{q}$ is considered as a compact component in the tetraquark structure $cq\bar{q}\bar{q}$ of exotic $D_{s}$ mesons. We discuss the mass spectrum and the flavor mixing of the triquarks by using the instanton induced interaction and the one-gluon exchange potentials. As a characteristic property of the triquark, we investigate the isospin violation. It is shown that the flavor $\bar{\bf 3}$ (isosinglet) and $\bf 6$ (isotriplet) states may be strongly mixed and then are identified with $D_{s}(2632)$.

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