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On the flavor mixing by a Light-Cone Hamiltonian and the isotopic spin in QCD

2001/03/23 by Hans-Christian Pauli, Pauli, Hans-Christian
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #hep-ph

paper · pdf · doi:10.48550/arxiv.hep-ph/0103254

8 pages, 2 figures, 6 tables, 10 references; 3 typos removed

arxiv created 2001/03/23 · arxiv updated 2009/11/30

Abstract

The structure of an effective light-cone Hamiltonian as recently derived is analyzed with emphasis on its prediction for flavor mixing in physical mesons. In a (perhaps over-simplified) model with one adjustable parameter, the empirical masses of all 25 pseudo-scalar mesons which are possible for 5 flavors are reproduced (almost) quantitatively. These results are coupled with explicit numerical estimates of flavor mixing. In the present approach, the well-known mass degeneracy of the pion triplet is caused by the mass degeneracy of the up and down quark.

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