![]() By contrast, weak interaction produced a negligible number of events at such low energies.Īs a result we get a Bayesian upper limit as good as 10 -11 Bohr magneton after running vIOLETA for 3 years. Thus, this channel twice the competing signal events. The electron has 1.00 B and the magneton particle (electron-neutrino e ) has 10. It is responsible for the steps in the red curve.Īt very low energy, the CEvNS expected events are pretty similar to the one expected by background, it means a 1 kdru rate. In NMT, the magneton particle is similar to the electron and both have a magnetic moment measured by Bohr unit. For electron-neutrino interaction, the binding energies play a similar role to the nuclear quenching. As in previous analysis, Quenching from CONNIE2019 was applied to both weak and EM interactions that produced nuclear recoils. The spin magnetic moments and spin g factors (gs -2) of electron, muon and tau are explained based on the electric charges (EC) and lepton charges (LC) in. When all these contributions are taken into account we get the spectrum in the figure. Besides, background events were accounted for by adding a rate of 1 kdru in the full range under consideration. Thus, the events originated in the weak interaction process and CEvNS were computed. To calculate the capability of vIOLETA to constraint this quantity, we have calculated the number of events expected from all Low Energy Neutrino Interactions (LENI) accessible by this experiment. The latter relation may also be deduced from a. Alternatively, a magnetic moment for a massive neutrino arising from gravitational origin is predicted by the so-called Wilson-Blackett law. A linear dependence on the neutrino mass was found. A potential measurement would therefore strongly hint to new physics beyond the Standard Model. 25 The most widely used method to determine neutrino magnetic moment is a process 26 Cross sections are added incoherently Two observables Scattering angle Kinetic energy of recoil electron 27 Direct measurement of neutrinos Solar neutrinos Reactor anti-neutrinos Accelerator base. In 1977 an expression for the magnetic moment of a massive Dirac neutrino was deduced in the context of electroweak interactions at the one-loop level. The neutrino magnetic moment (NMM) in the Standard Model, minimally extended allowing for massive neutrinos, is many orders of magnitude below current and expected experimental sensitivities. In the same way, the expected NMM for Dirac's neutrino changes five orders of magnitudes depending on the model. Neutrino magnetic moment not in all models is proportional to neutrino mass. In a Minimally extended SM, Majorana's neutrino has null Magnetic Moment, while in an Extended SM, it can reach values as high as 10 -10 Bohr magneton. Besides, NMM strongly depends on the Beyond Standard Model (SM) scenario chosen. The neutrino dipole magnetic moment (along with the electric dipole moment) is the most well studied among neutrino electromagnetic proper- ties. Neutrino Magnetic Moment (NMM) is one of the key neutrino's property since it would allow to disentangled the still unknown Majorana or Dirac neutrino's nature.
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