Compact expression for a bilinear combination of Dirac spinors in terms of world tensors

R. N. Rogalev

Institute for High Energy Physics

Abstract: A compact expression is obtained for the product of two Dirac spinors in the form of a linear combination of 16 Dirac matrices. A convenient form of expression of the results, permitting its use for analytic calculations of the amplitudes of many-particle processes, is found. It is shown that a bilinear combination of Dirac spinors can be expressed in terms of the 4-momentum vectors and spins of the corresponding particles together with a common phase factor.

Received: 24.01.1994

 English version: Theoretical and Mathematical Physics, 1994, 101:3, 1430–1435

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