Mass breaking in a relativistic quark model for mesons |
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Authors: | Hartmut Krasemann |
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Affiliation: | 1. Deutsches Elektronen-Synchroton DESY, Hamburg Germany;2. II. Institut für Theoretische Physik der Universität Hamburg Germany |
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Abstract: | We study symmetry breaking via quark mass differences in a relativistic quark model where mesons are built from heavy (m > 3 GeV) spin ) quarks and antiquarks. The meson (squared-)mass differences are linearly related to the number of strange, charmed, etc. quarks in the mesons. We show that the previously assumed SUn symmetry of the mesonic couplings holds, i.e., quark mass differences only show up in the masses of the external particles, not in the three meson vertex itself. |
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