Seasonal modulation of the 7Be solar neutrino rate in Borexino

The Borexino Collaboration

doi:10.1016/j.astropartphys.2017.04.004

Seasonal modulation of the ⁷Be solar neutrino rate in Borexino

The Borexino Collaboration

Research output: Contribution to journal › Article › peer-review

22 Scopus citations

Abstract

We present the evidence for the seasonal modulation of the ⁷Be 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 analytical fit to event rate, the Lomb-Scargle and the Empirical Mode Decomposition techniques, which all yield results in excellent agreement.

Original language	English (US)
Pages (from-to)	21-29
Number of pages	9
Journal	Astroparticle Physics
Volume	92
DOIs	https://doi.org/10.1016/j.astropartphys.2017.04.004
State	Published - Jun 2017

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics

Keywords

Liquid scintillators detectors
Low background detectors
Neutrino oscillations
Solar neutrinos

Access to Document

10.1016/j.astropartphys.2017.04.004

Cite this

@article{88207c936d314cdfb1f3d16f6a83bb9b,

title = "Seasonal modulation of the 7Be solar neutrino rate in Borexino",

abstract = "We present the evidence for the seasonal modulation of the 7Be 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 analytical fit to event rate, the Lomb-Scargle and the Empirical Mode Decomposition techniques, which all yield results in excellent agreement.",

keywords = "Liquid scintillators detectors, Low background detectors, Neutrino oscillations, Solar neutrinos",

author = "{The Borexino Collaboration} and M. Agostini and K. Altenm{\"u}ller and S. Appel and V. Atroshchenko and D. Basilico and G. Bellini and Benziger, {Jay Burton} and D. Bick and G. Bonfini and L. Borodikhina and D. Bravo and B. Caccianiga and F. Calaprice and A. Caminata and S. Caprioli and M. Carlini and P. Cavalcante and A. Chepurnov and K. Choi and D. D'Angelo and S. Davini and A. Derbin and Ding, {X. F.} and {Di Noto}, L. and I. Drachnev and K. Fomenko and D. Franco and F. Froborg and F. Gabriele and Cristiano Galbiati and C. Ghiano and M. Giammarchi and M. Goeger-Neff and A. Goretti and M. Gromov and C. Hagner and T. Houdy and E. Hungerford and Aldo Ianni and Andrea Ianni and A. Jany and D. Jeschke and V. Kobychev and D. Korablev and G. Korga and D. Kryn and M. Laubenstein and B. Lehnert and E. Litvinovich and F. Lombardi",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier B.V.",

year = "2017",

month = jun,

doi = "10.1016/j.astropartphys.2017.04.004",

language = "English (US)",

volume = "92",

pages = "21--29",

journal = "Astroparticle Physics",

issn = "0927-6505",

publisher = "Elsevier",

}

TY - JOUR

T1 - Seasonal modulation of the 7Be solar neutrino rate in Borexino

AU - The Borexino Collaboration

AU - Agostini, M.

AU - Altenmüller, K.

AU - Appel, S.

AU - Atroshchenko, V.

AU - Basilico, D.

AU - Bellini, G.

AU - Benziger, Jay Burton

AU - Bick, D.

AU - Bonfini, G.

AU - Borodikhina, L.

AU - Bravo, D.

AU - Caccianiga, B.

AU - Calaprice, F.

AU - Caminata, A.

AU - Caprioli, S.

AU - Carlini, M.

AU - Cavalcante, P.

AU - Chepurnov, A.

AU - Choi, K.

AU - D'Angelo, D.

AU - Davini, S.

AU - Derbin, A.

AU - Ding, X. F.

AU - Di Noto, L.

AU - Drachnev, I.

AU - Fomenko, K.

AU - Franco, D.

AU - Froborg, F.

AU - Gabriele, F.

AU - Galbiati, Cristiano

AU - Ghiano, C.

AU - Giammarchi, M.

AU - Goeger-Neff, M.

AU - Goretti, A.

AU - Gromov, M.

AU - Hagner, C.

AU - Houdy, T.

AU - Hungerford, E.

AU - Ianni, Aldo

AU - Ianni, Andrea

AU - Jany, A.

AU - Jeschke, D.

AU - Kobychev, V.

AU - Korablev, D.

AU - Korga, G.

AU - Kryn, D.

AU - Laubenstein, M.

AU - Lehnert, B.

AU - Litvinovich, E.

AU - Lombardi, F.

PY - 2017/6

Y1 - 2017/6

N2 - We present the evidence for the seasonal modulation of the 7Be 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 analytical fit to event rate, the Lomb-Scargle and the Empirical Mode Decomposition techniques, which all yield results in excellent agreement.

AB - We present the evidence for the seasonal modulation of the 7Be 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 analytical fit to event rate, the Lomb-Scargle and the Empirical Mode Decomposition techniques, which all yield results in excellent agreement.

KW - Liquid scintillators detectors

KW - Low background detectors

KW - Neutrino oscillations

KW - Solar neutrinos

UR - http://www.scopus.com/inward/record.url?scp=85033216793&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85033216793&partnerID=8YFLogxK

U2 - 10.1016/j.astropartphys.2017.04.004

DO - 10.1016/j.astropartphys.2017.04.004

M3 - Article

AN - SCOPUS:85033216793

SN - 0927-6505

VL - 92

SP - 21

EP - 29

JO - Astroparticle Physics

JF - Astroparticle Physics

ER -