Journal Article FZJ-2021-01097

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Constraints on flavor-diagonal non-standard neutrino interactions from Borexino Phase-II

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2020
SISSA [Trieste]

Journal of high energy physics 2020(2), 38 () [10.1007/JHEP02(2020)038]

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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’s) which modify the chiral couplings and Pee(E). In this paper, we search for such NSI’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’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

Classification:

Contributing Institute(s):
  1. Experimentelle Hadrondynamik (IKP-2)
Research Program(s):
  1. 612 - Cosmic Matter in the Laboratory (POF3-612) (POF3-612)

Appears in the scientific report 2021
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Medline ; Creative Commons Attribution CC BY 4.0 ; SCOAP3 OpenAccess ; DOAJ ; OpenAccess ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; DOAJ Seal ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 5 ; JCR ; NationallizenzNationallizenz ; SCOAP3 sponsored Journal ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection
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Dokumenttypen > Aufsätze > Zeitschriftenaufsätze
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Open Access

 Datensatz erzeugt am 2021-02-20, letzte Änderung am 2023-01-11


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