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

Gran Sasso Science Institute
Cluster of Excellence E-conversion
National Research Centre "Kurchatov Institute"
University of Milan
Department of Chemical Engineering
Universität Hamburg
Max-Planck-Institut für Kernphysik
Laboratori Nazionali del Gran Sasso
Virginia Polytechnic Institute and State University
Princeton University
Istituto Nazionale per la Fisica della Materia
Moscow State University
University of Hawaii
Petersburg Nuclear Phys. Inst.
Joint Inst. for Nuclear Research
Université Paris Diderot
University of Houston
Laboratorio Subterráneo de Canfranc
Jagiellonian University
Institute for Nuclear Research
Technische Universität Dresden
National Research Nuclear University MEPhI
University of California, San Diego
Forschungszentrum Jülich (FZJ)
RWTH Aachen University
Queen's University
Johannes Gutenberg University
University of Ferrara
INFN Sezione di Perugia
University of Massachusetts Amherst
University of California at Los Angeles

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

24 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
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
Externally published	Yes

Keywords

Liquid scintillators detectors
Low background detectors
Neutrino oscillations
Solar neutrinos

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10.1016/j.astropartphys.2017.04.004

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@article{9ec554d2330e4cda8a6f2ee2b4459cd9,

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 J. Benziger 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 C. 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 L. Oberauer and S. Sch{\"o}nert",

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

year = "2017",

month = jun,

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

language = "English",

volume = "92",

pages = "21--29",

journal = "Astroparticle Physics",

issn = "0927-6505",

publisher = "Elsevier B.V.",

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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, J.

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, C.

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 - Oberauer, L.

AU - Schönert, S.

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 - https://www.scopus.com/pages/publications/85033216793

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 -

Seasonal modulation of the ⁷Be solar neutrino rate in Borexino

Abstract

Keywords

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