Neutrino spin-flavor oscillations in solar environment

Joshi, Shree; Jain, Sudhir R.

doi:10.1088/1674-4527/20/8/123

Cited by 1 publication

(1 citation statement)

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“…The analysis of SFP has been done in several astrophysical environments [51,66,[71][72][73][74][75]. We conduct our analysis in the system of WD which is another favourable compact medium to its large magnetic field and source of ample production of neutrinos.…”

Section: Application In Wdmentioning

confidence: 99%

Neutrino spin-flavour precession in magnetized white dwarf

Adhikary

Alok

Mandal

et al. 2023

J. Phys. G: Nucl. Part. Phys.

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Due to notoriously small value of the neutrino magnetic moment, the phenomena of neutrino spin flavour precession (SFP) requires very high magnetic field. This makes only a handful of systems suitable to study this phenomena. By the observation of SFP, the Dirac and Majorana nature of neutrinos is expected to be distinguished. In this work, we point out the potential of white dwarf (WD) system in studying the spin-flavour oscillation of neutrinos. From recent analysis, it has been found that young isolated WDs may harbor very strong internal magnetic field, even without exhibiting any surface magnetic field. The presence of magnetic field enhances the cooling process and along with that, renders the spin-flavour oscillation of neutrinos emitted in the neutrino cooling process. Employing the standard WD specifications, we analyse whether a magnetized WD is a suitable environment to distinguish between the Dirac and Majorana nature of neutrino. Higher value of spin flavour transition probability implies reduced active neutrino flux which is possibleto be estimated in terrestrial neutrino detectors. We find that for the current upper bound on the neutrino magnetic moment, the spin flavour transition probability of Dirac neutrinos is much higher in comparison to the Majorana neutrino which converts the active neutrino flavours to sterile in a significant amount. We also examine the sensitivity of the spin flavour transition probability to theneutrino magnetic moment.

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