Pinched Gluon Vertex Operator in Super-Worldline Formalism

Details Pinched Gluon Vertex Operator in Super-Worldline Formalism Pinched Gluon Vertex Operator in Super-Worldline Formalism

1996-10-09

arxiv.org/abs/hep-th/9610064v2

Nucl.Phys. B491 (1997) 477-497

Physics

High Energy Physics

High Energy Physics - Theory

Latex 23 pages, no figure, with some clarifications. Version to appear in Nucl. Phys. B

Scientific paper

10.1016/S0550-3213(97)00098-9

We reformulate, using super worldline formalism, the pinched gluon vertex operator proposed by Strassler. The pinched vertex operator turns out to be the product of two gluon vertex operators with the insertion of $\delta$-function which makes the super distances between them zero. Thus the pinch procedures turn out to be nothing but the insertions of $\delta$-function. Applying our formulation to two-loop diagrams which are the QED correction to gluon scatterings via a single spinor loop, with the QED charge e being replaced by the strong coupling g, we show various formulae on pinched N-point functions.

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