6533b7defe1ef96bd1275ed5
RESEARCH PRODUCT
Charge and magnetic moment of the neutrino in the background field method and in the linear R-xi(L) gauge
Arnulfo ZepedaJose BernabeuLuis G. Cabral-rosettiJ. Vidalsubject
PhysicsParticle physicsCamps de galga (Física)Physics and Astronomy (miscellaneous)Magnetic momentBackground field methodDirac (video compression format)High Energy Physics::LatticeHigh Energy Physics::PhenomenologyFOS: Physical sciencesCharge (physics)Gauge (firearms)Electric chargePartícules (Física nuclear)Standard Model (mathematical formulation)High Energy Physics - PhenomenologyHigh Energy Physics::TheoryHigh Energy Physics - Phenomenology (hep-ph)Camps Teoria quàntica deNeutrinoEngineering (miscellaneous)description
We present a computation of the charge and the magnetic moment of the neutrino in the recently developed electro-weak Background Field Method and in the linear $R_{\xi}^L$ gauge. First, we deduce a formal Ward-Takahashi identity which implies the immediate cancellation of the neutrino electric charge. This Ward-Takahashi identity is as simple as that for QED. The computation of the (proper and improper) one loop vertex diagrams contributing to the neutrino electric charge is also presented in an arbitrary gauge, checking in this way the Ward-Takahashi identity previously obtained. Finally, the calculation of the magnetic moment of the neutrino, in the minimal extension of the Standard Model with massive Dirac neutrinos, is presented, showing its gauge parameter and gauge structure independence explicitly.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1999-07-06 |