and elastic scattering in Borexino
KJ Kelly, N Mishra, M Rai, LE Strigari - arXiv preprint arXiv:2407.03174, 2024 - arxiv.org
KJ Kelly, N Mishra, M Rai, LE Strigari
arXiv preprint arXiv:2407.03174, 2024•arxiv.orgWe perform a detailed study of neutrino-electron elastic scattering using the mono-energetic
$^{7} $ Be neutrinos in Borexino, with an emphasis on exploring the differences between the
contributions of $\nu_e $, $\nu_\mu $, and $\nu_\tau $. We find that current data are capable
of measuring these components such that the contributions from $\nu_\mu $ and $\nu_\tau $
cannot be zero, although distinguishing between them is challenging--the differences
stemming from Standard Model radiative corrections are insufficient without significantly …
$^{7} $ Be neutrinos in Borexino, with an emphasis on exploring the differences between the
contributions of $\nu_e $, $\nu_\mu $, and $\nu_\tau $. We find that current data are capable
of measuring these components such that the contributions from $\nu_\mu $ and $\nu_\tau $
cannot be zero, although distinguishing between them is challenging--the differences
stemming from Standard Model radiative corrections are insufficient without significantly …
We perform a detailed study of neutrino-electron elastic scattering using the mono-energetic Be neutrinos in Borexino, with an emphasis on exploring the differences between the contributions of , , and . We find that current data are capable of measuring these components such that the contributions from and cannot be zero, although distinguishing between them is challenging -- the differences stemming from Standard Model radiative corrections are insufficient without significantly more precise measurements. In studying these components, we compare predicted neutrino-electron scattering event rates within the Standard Model (accounting for neutrino oscillations), as well as going beyond the Standard Model in two ways. We allow for non-unitary evolution to modify neutrino oscillations, and find that with a larger exposure (x), Borexino may provide relevant information for constraining non-unitarity, and that JUNO may be able to accomplish this with its data collection of Be neutrinos. We also consider novel - and -electron scattering from a gauged model, showing consistency with previous analyses of Borexino and this scenario, but also demonstrating the impact of uncertainties on Standard Model mixing parameters on these results.
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