@article{92be46c316324bdf883c0effe49391d3,
title = "Constraints on flavor-diagonal non-standard neutrino interactions from Borexino Phase-II",
abstract = "The Borexino detector measures solar neutrino fluxes via neutrino-electron elastic scattering. Observed spectra are determined by the solar-νe survival probability Pee(E), and the chiral couplings of the neutrino and electron. Some theories of physics beyond the Standard Model postulate the existence of Non-Standard Interactions (NSI{\textquoteright}s) which modify the chiral couplings and Pee(E). In this paper, we search for such NSI{\textquoteright}s, in particular, flavor-diagonal neutral current interactions that modify the νee and ντe couplings using Borexino Phase II data. Standard Solar Model predictions of the solar neutrino fluxes for both high- and low-metallicity assumptions are considered. No indication of new physics is found at the level of sensitivity of the detector and constraints on the parameters of the NSI{\textquoteright}s are placed. In addition, with the same dataset the value of sin2θW is obtained with a precision comparable to that achieved in reactor antineutrino experiments [Figure not available: see fulltext.].",
keywords = "Beyond Standard Model, Neutrino Physics",
author = "{The Borexino Collaboration} and Agarwalla, {S. K.} and M. Agostini and K. Altenm{\"u}ller and S. Appel and V. Atroshchenko and Z. Bagdasarian and D. Basilico and G. Bellini and J. Benziger and D. Bick and G. Bonfini and D. Bravo and B. Caccianiga and F. Calaprice and A. Caminata and L. Cappelli and P. Cavalcante and F. Cavanna and A. Chepurnov and K. Choi and D. D{\textquoteright}Angelo and S. Davini and A. Derbin and {Di Giacinto}, A. and {Di Marcello}, V. and Ding, {X. F.} and {Di Ludovico}, A. and {Di Noto}, L. and I. Drachnev and K. Fomenko and A. Formozov and D. Franco and F. Gabriele and C. Galbiati and M. Gschwender and C. Ghiano and M. Giammarchi and A. Goretti and M. Gromov and D. Guffanti and C. Hagner and E. Hungerford and Aldo Ianni and Andrea Ianni and A. Jany and D. Jeschke and S. Kumaran and V. Kobychev and G. Korga and T. Lachenmaier",
note = "Funding Information: This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited Publisher Copyright: {\textcopyright} 2020, The Author(s).",
year = "2020",
month = feb,
day = "1",
doi = "10.1007/JHEP02(2020)038",
language = "English (US)",
volume = "2020",
journal = "Journal of High Energy Physics",
issn = "1126-6708",
publisher = "Springer Verlag",
number = "2",
}