Hadron Structure Within the Point Form of Relativistic Quantum Mechanics |
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Authors: | M Gómez-Rocha W Schweiger O Senekowitsch |
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Institution: | 1. FB Theoretische Physik, Institut für Physik, Universit?t Graz, Graz, Austria
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Abstract: | We present an outline of recent developments in the field of hadron form-factor calculations within constituent-quark models using the point form of relativistic quantum mechanics. Our method to calculate currents and form factors is exemplified by means of the weak B → D transition. We present results for weak B → D transition form factors in the space- and the time-like momentum-transfer region. We discuss how wrong cluster properties, which one has to deal with when employing relativistic quantum mechanics, affect these form factors and we estimate the role non-valence, Z-graph contributions may play for decay kinematics. |
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