Neutrino-Electron Scattering: Charge Radius and Effective Couplings

15th Mexican School of Particles and Fields

Gutiérrez-Rodríguez, A.^1 ; González-Sánchez, A.^1 ; Blanco, M.C.^1 ; Hernández-Ruíz, M.A.^2

Facultad de Física, Universidad Autónoma de Zacatecas, Apartado Postal C-580, 98060 Zacatecas, Mexico^1

Unidad Académica de Ciencias Químicas, Universidad Autónoma de Zacatecas, Apartado Postal C-585, 98060 Zacatecas, Mexico^2

关键词: Charge radius;    Dirac neutrino;    Effective coupling;    Model parameters;    Muon neutrino;    Neutral currents;    Scattering cross section;    Symmetric model;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/468/1/012004/pdf
DOI  :  10.1088/1742-6596/468/1/012004

来源: IOP

【 摘 要 】

In this work the neutral-current scattering cross-section for neutrinos on electrons is calculated assuming that a massive Dirac neutrino is characterized by a phenomenological parameters, a charge radius «r2» and the right-handed currents are present in the framework of a Left-Right symmetric model (LR). Using the CHARM II result for the charge radius of the muon-neutrino |«r2»| -33cm2, we place a bound on -7.9 × 10-33cm2≤ 〈r2LR≤ 7.9 × 10-33cm2. We discuss the relationship between the electron neutral couplings gveVand gveAand the LR model parameters.