TY  - CONF
AU  - Ludhova, Livia
AU  - Borexino collaboration
TI  - Limiting the effective magnetic moment of solar neutrinos with the Borexino detector
JO  - Journal of physics / Conference Series
VL  - 1342
IS  - 1
SN  - 1742-6588
CY  - Bristol
PB  - IOP Publ.87703
M1  - FZJ-2021-00821
SP  - 012033
PY  - 2020
AB  - Borexino has provided an updated upper limit on the effective neutrino magnetic moment of solar neutrinos μβα < 2.8 x 10−11 μऔ at 90% C.L. This result represents nearly a factor of two improvement with respect to the previous result based on 192 days of the Phase-I data. The current analysis has been performed using 1291.5 days exposure of the Phase-II data, characterized by a further improved level of radio-purity of liquid scintillator. Another key ingredient of the new analysis, lowering the threshold from 260 to 186 keV, was possible thanks to a better understanding of the detector-response function at low energies. The global spectral fit was preformed up to 2970 keV energy, using constraints on the sum of the solar neutrino fluxes implied by the radiochemical gallium experiments. From the limit for the effective neutrino magnetic moment, new limits for the magnetic moments of the neutrino flavour states were derived.
T2  - TAUP 2017
CY  - 24 Jul 2017 - 28 Jul 2017, Sudbury (Canada)
Y2  - 24 Jul 2017 - 28 Jul 2017
M2  - Sudbury, Canada
LB  - PUB:(DE-HGF)16 ; PUB:(DE-HGF)8
UR  - <Go to ISI:>//WOS:001432953400033
DO  - DOI:10.1088/1742-6596/1342/1/012033
UR  - https://juser.fz-juelich.de/record/890234
ER  -