Fermion helicity flip by parity violating torsion

Details Fermion helicity flip by parity violating torsion Fermion helicity flip by parity violating torsion

2001-02-14

arxiv.org/abs/hep-th/0102073v2

Phys.Lett. B514 (2001) 109-113

Physics

High Energy Physics

High Energy Physics - Theory

5 pages, Revtex, Two figures, Title changed in the modified version. Few discussions added.No change in the conclusion. Accept

Scientific paper

10.1016/S0370-2693(01)00785-7

The helicity flip of a spin-1/2 Dirac fermion interacting with a torsion-
field endowed with a pseudo-tensorial extension is analysed. Taking the torsion
to be represented by a Kalb-Ramond field, we show that there is a finite
amplitude for helicity flip for massive fermions. The lowest order contribution
is proportional to the pseudo-tensor term.

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