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arXiv · 2208.02239

Can neutron star discriminate between Dirac and Majorana neutrinos?

Ashutosh Kumar Alok·Neetu Raj Singh Chundawat·Arindam Mandal·Trisha Sarkar
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Abstract

Any observable repercussion of electromagnetic properties of neutrinos will provide a perspicuous signature of new physics. This includes the phenomenon of neutrino spin flip in the propinquity of an external magnetic field. In this work, we study the inklings of spin flip in a neutron star with a radially varying magnetic field and matter density, known as a magnetar, which is also a source of profuse production of neutrinos during its initial stage of thermal evolution. We find that a precise measurement of neutrino flux emerging from a neutron star would reeducate discrimination between Dirac and Majorana neutrinos as the flux reduction due to spin flip oscillations are different for both types of neutrinos. Further, the reduction of flux is more preeminent near the surface as compared to the core of a neutron star.

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Ashutosh Kumar Alok, Neetu Raj Singh Chundawat, Arindam Mandal, Trisha Sarkar. 2022-08-03. Can neutron star discriminate between Dirac and Majorana neutrinos?. https://arxiv.org/abs/2208.02239

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