/ hep-ex arXiv:1701.07970


Seasonal Modulation of the $^7$Be Solar Neutrino Rate in Borexino


Agostini, M. (Gran Sasso) ; Altenmüller, K. (TUM-IAS, Munich) ; Appel, S. (TUM-IAS, Munich) ; Atroshchenko, V. (Kurchatov Inst., Moscow) ; Basilico, D. (Milan U.) ; Bellini, G. (Milan U.) ; Benziger, J. (Princeton U.) ; Bick, D. (Hamburg U.) ; Bonfini, G. (Gran Sasso) ; Borodikhina, L. (Kurchatov Inst., Moscow) ; Bravo, D. (Milan U.) ; Caccianiga, B. (Milan U.) ; Calaprice, F. (Princeton U.) ; Caminata, A. (INFN, Genoa) ; Caprioli, S. (Milan U.) ; Carlini, M. (Gran Sasso) ; Cavalcante, P. (Virginia Tech.) ; Chepurnov, A. (SINP, Moscow) ; Choi, K. (Hawaii U.) ; D'Angelo, D. (Milan U.) ; Davini, S. (INFN, Genoa) ; Derbin, A. (St. Petersburg, INP) ; Ding, X.F. (Gran Sasso) ; Di Noto, L. (INFN, Genoa) ; Drachnev, I. (St. Petersburg, INP) ; Fomenko, K. (Dubna, JINR) ; Franco, D. (APC, Paris) ; Froborg, F. (Princeton U.) ; Gabriele, F. (Gran Sasso) ; Galbiati, C. (Princeton U.) ; Ghiano, C. (INFN, Genoa) ; Giammarchi, M. (Milan U.) ; Goeger-Neff, M. (TUM-IAS, Munich) ; Goretti, A. (Princeton U.) ; Gromov, M. (SINP, Moscow) ; Hagner, C. (Hamburg U.) ; Houdy, T. (APC, Paris) ; Hungerford, E. (Houston U.) ; Ianni, Aldo (Gran Sasso) ; Ianni, Andrea (Princeton U.) ; Jany, A. (Jagiellonian U.) ; Jeschke, D. (TUM-IAS, Munich) ; Kobychev, V. (Kiev, INR) ; Korablev, D. (Dubna, JINR) ; Korga, G. (Houston U.) ; Kryn, D. (APC, Paris) ; Laubenstein, M. (Gran Sasso) ; Lehnert, B. (Dresden, Tech. U., ITP) ; Litvinovich, E. (Moscow Phys. Eng. Inst.) ; Lombardi, F. (Gran Sasso) ; Lombardi, P. (Milan U.) ; Ludhova, L. (Aachen, Tech. Hochsch.) ; Lukyanchenko, G. (Kurchatov Inst., Moscow) ; Machulin, I. (Moscow Phys. Eng. Inst.) ; Manecki, S. (Virginia Tech.) ; Manuzio, G. (INFN, Genoa) ; Marcocci, S. (Gran Sasso) ; Martyn, J. (Mainz U., Inst. Phys.) ; Meroni, E. (Milan U.) ; Meyer, M. (Hamburg U.) ; Miramonti, L. (Milan U.) ; Misiaszek, M. (Jagiellonian U.) ; Montuschi, M. (INFN, Ferrara) ; Muratova, V. (St. Petersburg, INP) ; Neumair, B. (TUM-IAS, Munich) ; Oberauer, L. (TUM-IAS, Munich) ; Opitz, B. (Hamburg U.) ; Ortica, F. (Perugia U.) ; Pallavicini, M. (INFN, Genoa) ; Papp, L. (TUM-IAS, Munich) ; Pocar, A. (Massachusetts U., Amherst) ; Ranucci, G. (Milan U.) ; Razeto, A. (Gran Sasso) ; Re, A. (Milan U.) ; Romani, A. (Perugia U.) ; Roncin, R. (APC, Paris) ; Rossi, N. (Gran Sasso) ; Schönert, S. (TUM-IAS, Munich) ; Semenov, D. (St. Petersburg, INP) ; Shakina, P. (St. Petersburg, INP) ; Skorokhvatov, M. (Moscow Phys. Eng. Inst.) ; Smirnov, O. (Dubna, JINR) ; Sotnikov, A. (Dubna, JINR) ; Stokes, L.F.F. (Gran Sasso) ; Suvorov, Y. (Kurchatov Inst., Moscow) ; Tartaglia, R. (Gran Sasso) ; Testera, G. (INFN, Genoa) ; Thurn, J. (Dresden, Tech. U., ITP) ; Toropova, M. (Kurchatov Inst., Moscow) ; Unzhakov, E. (St. Petersburg, INP) ; Vishneva, A. (Dubna, JINR) ; Vogelaar, R.B. (Virginia Tech.) ; von Feilitzsch, F. (TUM-IAS, Munich) ; Wang, H. (UCLA) ; Weinz, S. (Mainz U., Inst. Phys.) ; Wojcik, M. (Jagiellonian U.) ; Wurm, M. (Mainz U., Inst. Phys.) ; Yokley, Z. (Virginia Tech.) ; Zaimidoroga, O. (Dubna, JINR) ; Zavatarelli, S. (INFN, Genoa) ; Zuber, K. (Dresden, Tech. U., ITP) ; Zuzel, G. (Jagiellonian U.)

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.

Web-Page: http://inspirehep.net/record/1511126/files/figureFit3.png; http://inspirehep.net/record/1511126/files/figureFit4.png; http://inspirehep.net/record/1511126/files/figureLomb6.png; http://inspirehep.net/record/1511126/files/figureEMD10c.png; http://inspirehep.net/record/1511126/files/figureLomb9.png; http://inspirehep.net/record/1511126/files/figureLomb5.png; http://inspirehep.net/record/1511126/files/figureLomb8.png; http://inspirehep.net/record/1511126/files/figureLomb7.png; http://inspirehep.net/record/1511126/files/figureEMD12.png; http://inspirehep.net/record/1511126/files/figureEMD11b.png; http://inspirehep.net/record/1511126/files/figureEMD11a.png; http://inspirehep.net/record/1511126/files/figureEMD9.png; http://inspirehep.net/record/1511126/files/figure2.png; http://inspirehep.net/record/1511126/files/figureEMD11c.png; http://inspirehep.net/record/1511126/files/figureEMD10b.png; http://inspirehep.net/record/1511126/files/figure1.png; http://inspirehep.net/record/1511126/files/figureEMD10a.png; http://inspirehep.net/record/1511126/files/arXiv:1701.07970.pdf


Note: *Temporary entry*; 11 palese, 13 figures

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