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Type: Artigo de periódico
Title: Dynamics of chiral oscillations: a comparative analysis with spin flipping
Author: Bernardini, AE
Abstract: Chiral oscillation as well as spin flipping effects correspond to quantum phenomena of fundamental importance in the context of particle physics and, in particular, of neutrino physics. From the point of view of first quantized theories, we are specifically interested in pointing out the differences between chirality and helicity by obtaining their dynamic equations for a fermionic Dirac-type particle (neutrino). We also identify both effects when the nonminimal coupling with an external (electro)magnetic field in the neutrino interacting Lagrangian is taken into account. We demonstrate that, however, there is no constraint between chiral oscillations, when it takes place in vacuum, and the process of spin flipping related to the helicity quantum number, which does not take place in vacuum. To conclude, we show that the origin of chiral oscillations (in vacuum) can be interpreted as projections of very rapid oscillations of position onto the longitudinal direction of momentum.
Country: Inglaterra
Editor: Iop Publishing Ltd
Citation: Journal Of Physics G-nuclear And Particle Physics. Iop Publishing Ltd, v. 32, n. 1, n. 9, n. 22, 2006.
Rights: fechado
Identifier DOI: 10.1088/0954-3899/32/1/002
Date Issue: 2006
Appears in Collections:Unicamp - Artigos e Outros Documentos

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