Effects of the Left-Right Asymmetry Parameter in the End Point of the Tritium-Beta Spectrum

Authors : A GUTIÉRREZRODRÍGUEZ, M A HERNÁNDEZRUÍZ, F RAMÍREZSÁNCHEZ

Pages : 169-178

Doi:10.3906/sag-1211-88

View : 18 | Download : 8

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :We start with a Left-Right Symmetric Model and we analyze the endpoint of the beta decay of tritium 3H \rightarrow 3He + e- + bar{n}e. We applied this model to incorporate the right currents, whereby we propose an amplitude whose leptonic part contains the parameter l defined as a left-right asymmetry parameter which measures the parity violation. We realized a numerical computation for the sensibility of the Mainz and Troitsk experiments for mne= 2.2 eV; and for the future beta decay experiment KATRIN, which will reach a sensitivity of mne \approx 0.2 eV. We find that the electron energy spectrum for such experiments is light affected by the left-right asymmetry parameter.
Keywords : Models beyond the standard model, Neutrino mass and mixing, Beta decay Models beyond the standard model, Neutrino mass and mixing, Beta decay