Study on the Form Factors at Effective Vertices of Diqarks Interacting with Gauge Bosons

Details Study on the Form Factors at Effective Vertices of Diqarks Interacting with Gauge Bosons Study on the Form Factors at Effective Vertices of Diqarks Interacting with Gauge Bosons

2006-11-12

arxiv.org/abs/hep-ph/0611160v2

Int.J.Mod.Phys.A23:19,2008; Int.J.Mod.Phys.A23:2975-2990,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, 6 figures

Scientific paper

10.1142/S0217751X08039815

The diquark structure in baryons is commonly accepted as a reasonable approximation which can much simplify the picture 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 the 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 Bethe-Salpeter equation to derive such form factors and numerically evaluate their magnitudes.

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