Study on Form Factors at Effective Vertices of Diqarks Coupling to Gauge Bosons
INTERNATIONAL JOURNAL OF MODERN PHYSICS A(2008)
摘要
The diquark structure in baryons is commonly accepted as a reasonable approximation which can much simplify the picture of baryons and reduce the length of calculations. However, a diquark by no means is a point-like particle, even though it is treated as a whole object. Therefore, to apply the diquark picture to phenomenological calculations, at the effective vertices for the diquark-gauge boson interactions, suitable form factors must be introduced to compensate the effects caused by the inner structure of the diquark. It is crucial to derive the appropriate form factors for various interactions. In this work, we use the BetheSalpeter equation to derive such form factors and numerically evaluate their magnitudes.
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关键词
diquark,form factor,effective vertices
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