arxiv: 1701.07970 · v2 · ★pith:6P2ITE7Inew · submitted 2017-01-27 · ✦ hep-ex · physics.ins-det
Seasonal Modulation of the ⁷Be Solar Neutrino Rate in Borexino
M. Agostini
,
K. Altenmuller
,
S. Appel
,
V. Atroshchenko
,
D. Basilico
,
G. Bellini
,
J. Benziger
,
D. Bick
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G. Bonfini
L. Borodikhina
D. Bravo
B. Caccianiga
F. Calaprice
A. Caminata
S. Caprioli
M. Carlini
P. Cavalcante
A. Chepurnov
K. Choi
D. D'Angelo
S. Davini
A. Derbin
X.F. Ding
L. Di Noto
I. Drachnev
K. Fomenko
D. Franco
F. Froborg
F. Gabriele
C. Galbiati
C. Ghiano
M. Giammarchi
M. Goeger-Neff
A. Goretti
M. Gromov
C. Hagner
T. Houdy
E. Hungerford
Aldo Ianni
Andrea Ianni
A. Jany
D. Jeschke
V. Kobychev
D. Korablev
G. Korga
D. Kryn
M. Laubenstein
B. Lehnert
E. Litvinovich
F. Lombardi
P. Lombardi
L. Ludhova
G. Lukyanchenko
I. Machulin
S. Manecki
G. Manuzio
S. Marcocci
J. Martyn
E. Meroni
M. Meyer
L. Miramonti
M. Misiaszek
M. Montuschi
V. Muratova
B. Neumair
L. Oberauer
B. Opitz
F. Ortica
M. Pallavicini
L. Papp
A. Pocar
G. Ranucci
A. Razeto
A. Re
A. Romani
R. Roncin
N. Rossi
S. Schonert
D. Semenov
P. Shakina
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
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✦ hep-ex
physics.ins-det
keywords
modulationborexinoneutrinorateseasonalsolarabsenceagreement
read the original abstract
We detected the seasonal modulation of the $^7$Be neutrino interaction rate with the Borexino detector at the Laboratori Nazionali del Gran Sasso in Italy. The period, amplitude, and phase of the observed time evolution of the signal are consistent with its solar origin, and the absence of an annual modulation is rejected at 99.99\% C.L. The data are analyzed using three methods: the sinusoidal fit, the Lomb-Scargle and the Empirical Mode Decomposition techniques, which all yield results in excellent agreement.
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