English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

In this paper, we show how a presence of the exotic scalar, tensor weakinteractions in addition to the standard vector-axial (V-A) one may help todistinguish the Dirac from Majorana neutrinos in the elastic scattering of(anti)neutrino beam off the unpolarized electrons in the limit of vanishing(anti)neutrino mass. We assume that the incoming (anti)neutrino beam comes fromthe polarized muon decay at rest and is the left-right chiral mixture withassigned direction of the transversal spin polarization with respect to theproduction plane. We display that the azimuthal asymmetry in the angulardistribution of recoil electrons is generated by the interference terms betweenthe standard and exotic couplings, which are proportional to the transversal(anti)neutrino spin polarization and independent of the neutrino mass. Thisasymmetry for the Majorana neutrinos is distinct from the one for the Diracneutrinos through the absence of interference between the standard and tensorcouplings. Additionally, the interference term between the standard and scalarcoupling of the only left chiral neutrinos, absent in the Dirac case, appears.We also indicate the possibility of utilizing the azimuthal asymmetrymeasurements to search for the new CP-violating phases. Our analysis ismodel-independent and consistent with the current upper limits on thenon-standard couplings.

Azimuthal asymmetry of recoil electrons in neutrino-electron elastic scattering as signature of neutrino nature