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Improved measurement of 8B solar neutrinos with 1.5 kt y of Borexino exposure | | Borexino Collaboration
; M. Agostini
; K. Altenmueller
; S. Appel
; V. Atroshchenko
; Z. Bagdasarian
; D. Basilico
; G. Bellini
; J. Benziger
; D. Bick
; G. Bonfini
; D. Bravo
; B. Caccianiga
; F. Calaprice
; A. Caminata
; S. Caprioli
; M. Carlini
; P. Cavalcante
; A. Chepurnov
; K. Choi
; L. Collica
; D. D'Angelo
; S. Davini
; A. Derbin
; X. F. Ding
; A. Di Ludovico
; L. Di Noto
; I. Drachnev
; K. Fomenko
; A. Formozov
; D. Franco
; F. Gabriele
; C. Galbiati
; C. Ghiano
; M. Giammarchi
; A. Goretti
; M. Gromov
; D. Guffanti
; C. Hagner
; T. Houdy
; E. Hungerford
; Aldo Ianni
; Andrea Ianni
; A. Jany
; D. Jeschke
; V. Kobychev
; D. Korablev
; G. Korga
; D. Kryn
; M. Laubenstein
; E. Litvinovich
; F. Lombardi
; P. Lombardi
; L. Ludhova
; G. Lukyanchenko
; L. Lukyanchenko
; I. Machulin
; G. Manuzio
; S. Marcocci
; J. Martyn
; E. Meroni
; M. Meyer
; L. Miramonti
; M. Misiaszek
; V. Muratova
; B. Neumair
; L. Oberauer
; B. Opitz
; V. Orekhov
; F. Ortica
; M. Pallavicini
; L. Papp
; O. Penek
; N. Pilipenko
; A. Pocar
; A. Porcelli
; G. Ranucci
; A. Razeto
; A. Re
; M. Redchuk
; A. Romani
; R. Roncin
; N. Rossi
; S. Schoenert
; D. Semenov
; M. Skorokhvatov
; O. Smirnov
; A. Sotnikov
; L.F.F. Stokes
; Y. Suvorov
; R. Tartaglia
; G. Testera
; J. Thurn
; M. Toropova
; E. Unzhakov
; A. Vishneva
; R.B. Vogelaar
; F. von Feilitzsch
; H. Wang
; S. Weinz
; M. Wojcik
; M. Wurm
; Z. Yokley
; O. Zaimidoroga
; S. Zavatarelli
; K. Zuber
; G. Zuzel
; | | Date: |
3 Sep 2017 | | Abstract: | We report on an improved measurement of the $^8$B solar neutrino interaction
rate with the Borexino detector at the Laboratori Nazionali del Gran Sasso.
Neutrinos are detected via their elastic scattering on electrons in a large,
radio-pure liquid scintillator target. Novel analysis approaches exploiting
most of the active volume of the detector have enabled the collection of data
from 1.5 kt$cdot$y exposure between 2008 and 2016. The measured rate of solar
neutrino-induced, scattered electrons above 3 MeV of energy is
$0.220substack{+0.015 \ -0.016},(stat),substack{+0.006 \
-0.006},(syst)$~cpd/100~t, which corresponds to an observed solar neutrino
flux assuming no neutrino flavor conversion of 2.55$substack{+0.17 \
-0.19}(stat)substack{+0.07\ -0.07}(syst) imes$10$^6$~cm$^{-2},$s$^{-1}$. If
one assumes the $^8$B solar neutrino flux predicted by the high metallicity
Standard Solar Model, the average $^8$B solar $
u_e$ survival probability is
0.36$pm$0.08 at the mean visible energy of 7.9~MeV, in good agreement with the
MSW-LMA | | Source: | arXiv, 1709.0756 | | Services: | Forum | Review | PDF | Favorites | |
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