期刊
PHYSICS LETTERS B
卷 514, 期 1-2, 页码 109-113出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0370-2693(01)00785-7
关键词
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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 which turns out to be proportional to the pseudo-tensor term. implies a new physical understanding of the phenomenon of helicity flip. (C) 2001 Published by Elsevier Science B.V.
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