High precision 7Be solar neutrinos measurement and day night effect obtained with Borexino

G. Testera; G. Bellini; J. Benziger; D. Bick; S. Bonetti; G. Bonfini; B. Caccianiga; L. Cadonati; F. Calaprice; C. Carraro; A. Chavarria; D. Dangelo; A. Derbin; A. Etenko; K. Fomenko; D. Franco; C. Galbiati; S. Gazzana; C. Ghiano; M. Giammarchi; M. Göger-Neff; A. Goretti; L. Grandi; E. Guardincerri; S. Hardy; Aldo Ianni; Andrea Ianni; D. Korablev; V. Kobychev; G. Korga; Y. Koshio; D. Kryn; M. Laubenstein; M. Leung; T. Lewke; E. Litvinovich; B. Loer; P. Lombardi; F. Lombardi; L. Ludhova; I. MacHulin; S. Manecki; W. Maneschg; G. Manuzio; Q. Meindl; E. Meroni; L. Miramonti; M. Misiaszek; D. Montanari; P. Mosteiro; V. Muratova; L. Oberauer; M. Obolensky; F. Ortica; M. Pallavicini; L. Papp; C. Pena-Garay; L. Perasso; S. Perasso; A. Pocar; R. S. Raghavan; G. Ranucci; A. Razeto; A. Romani; A. Sabelnikov; R. Saldanha; C. Salvo; S. Schönert; H. Simgen; M. Skorokhvatov; O. Smirnov; A. Sotnikov; S. Sukhotin; Y. Suvorov; R. Tartaglia; D. Vignaud; R. B. Vogelaar; F. Von Feilitzsch; J. Winter; M. Wojcik; M. Wurm; O. Zaimidoroga; S. Zavatarelli; G. Zuzel

doi:10.1016/j.nima.2012.01.006

High precision ⁷Be solar neutrinos measurement and day night effect obtained with Borexino

G. Testera, G. Bellini, J. Benziger, D. Bick, S. Bonetti, G. Bonfini, B. Caccianiga, L. Cadonati, F. Calaprice, C. Carraro, A. Chavarria, D. Dangelo, A. Derbin, A. Etenko, K. Fomenko, D. Franco, C. Galbiati, S. Gazzana, C. Ghiano, M. GiammarchiM. Göger-Neff, A. Goretti, L. Grandi, E. Guardincerri, S. Hardy, Aldo Ianni, Andrea Ianni, D. Korablev, V. Kobychev, G. Korga, Y. Koshio, D. Kryn, M. Laubenstein, M. Leung, T. Lewke, E. Litvinovich, B. Loer, P. Lombardi, F. Lombardi, L. Ludhova, I. MacHulin, S. Manecki, W. Maneschg, G. Manuzio, Q. Meindl, E. Meroni, L. Miramonti, M. Misiaszek, D. Montanari, P. Mosteiro, V. Muratova, L. Oberauer, M. Obolensky, F. Ortica, M. Pallavicini, L. Papp, C. Pena-Garay, L. Perasso, S. Perasso, A. Pocar, R. S. Raghavan, G. Ranucci, A. Razeto, A. Romani, A. Sabelnikov, R. Saldanha, C. Salvo, S. Schönert, H. Simgen, M. Skorokhvatov, O. Smirnov, A. Sotnikov, S. Sukhotin, Y. Suvorov, R. Tartaglia, D. Vignaud, R. B. Vogelaar, F. Von Feilitzsch, J. Winter, M. Wojcik, M. Wurm, O. Zaimidoroga, S. Zavatarelli, G. Zuzel

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

Abstract

We report the direct measurement of the ⁷Be solar neutrino signal rate performed with the Borexino detector at the Laboratori Nazionali del Gran Sasso and the search for a day-night asymmetry of this interaction rate. The interaction rate of the 0.862 MeV ⁷Be neutrinos is 46±1.6(stat)-1.61.5(syst) counts/(day·100 ton). The hypothesis of no oscillation for this solar neutrinos is inconsistent with our measurement at the 5.8σ C.L. Our result is the first direct measurement of solar neutrinos with an accuracy better than 5%. We report the survival probability for solar ^νe in the transition region between matter-enhanced and vacuum-driven oscillations. The measured day night asymmetry is ^Adn=0.001±0.012 (stat)±0.007 (syst), in agreement with the predicition of MSW-LMA neutrino [13] oscillations. This result discourages MSW oscillations with mixing parameters in the LOW region at more than 8.5σ, meaning that this region is, for the first time, strongly rejected without the assumption of CPT symmetry. The result can also be used to constrain some neutrino oscillation scenarios involving new physics.

Original language	English (US)
Pages (from-to)	258-261
Number of pages	4
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	692
DOIs	https://doi.org/10.1016/j.nima.2012.01.006
State	Published - Nov 11 2012

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
Instrumentation

Keywords

Liquid scintillators
Low background detectors
Neutrino oscillations
Solar neutrinos

Access to Document

10.1016/j.nima.2012.01.006

Cite this

Testera, G., Bellini, G., Benziger, J., Bick, D., Bonetti, S., Bonfini, G., Caccianiga, B., Cadonati, L., Calaprice, F., Carraro, C., Chavarria, A., Dangelo, D., Derbin, A., Etenko, A., Fomenko, K., Franco, D., Galbiati, C., Gazzana, S., Ghiano, C., ... Zuzel, G. (2012). High precision ⁷Be solar neutrinos measurement and day night effect obtained with Borexino. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 692, 258-261. https://doi.org/10.1016/j.nima.2012.01.006

@article{5fc4a4694e8b4b5980c52b7b8701bb2a,

title = "High precision 7Be solar neutrinos measurement and day night effect obtained with Borexino",

abstract = "We report the direct measurement of the 7Be solar neutrino signal rate performed with the Borexino detector at the Laboratori Nazionali del Gran Sasso and the search for a day-night asymmetry of this interaction rate. The interaction rate of the 0.862 MeV 7Be neutrinos is 46±1.6(stat)-1.61.5(syst) counts/(day·100 ton). The hypothesis of no oscillation for this solar neutrinos is inconsistent with our measurement at the 5.8σ C.L. Our result is the first direct measurement of solar neutrinos with an accuracy better than 5%. We report the survival probability for solar νe in the transition region between matter-enhanced and vacuum-driven oscillations. The measured day night asymmetry is Adn=0.001±0.012 (stat)±0.007 (syst), in agreement with the predicition of MSW-LMA neutrino [13] oscillations. This result discourages MSW oscillations with mixing parameters in the LOW region at more than 8.5σ, meaning that this region is, for the first time, strongly rejected without the assumption of CPT symmetry. The result can also be used to constrain some neutrino oscillation scenarios involving new physics.",

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

author = "G. Testera and G. Bellini and J. Benziger and D. Bick and S. Bonetti and G. Bonfini and B. Caccianiga and L. Cadonati and F. Calaprice and C. Carraro and A. Chavarria and D. Dangelo and A. Derbin and A. Etenko and K. Fomenko and D. Franco and C. Galbiati and S. Gazzana and C. Ghiano and M. Giammarchi and M. G{\"o}ger-Neff and A. Goretti and L. Grandi and E. Guardincerri and S. Hardy and Aldo Ianni and Andrea Ianni and D. Korablev and V. Kobychev and G. Korga and Y. Koshio and D. Kryn and M. Laubenstein and M. Leung and T. Lewke and E. Litvinovich and B. Loer and P. Lombardi and F. Lombardi and L. Ludhova and I. MacHulin and S. Manecki and W. Maneschg and G. Manuzio and Q. Meindl and E. Meroni and L. Miramonti and M. Misiaszek and D. Montanari and P. Mosteiro and V. Muratova and L. Oberauer and M. Obolensky and F. Ortica and M. Pallavicini and L. Papp and C. Pena-Garay and L. Perasso and S. Perasso and A. Pocar and Raghavan, {R. S.} and G. Ranucci and A. Razeto and A. Romani and A. Sabelnikov and R. Saldanha and C. Salvo and S. Sch{\"o}nert and H. Simgen and M. Skorokhvatov and O. Smirnov and A. Sotnikov and S. Sukhotin and Y. Suvorov and R. Tartaglia and D. Vignaud and Vogelaar, {R. B.} and {Von Feilitzsch}, F. and J. Winter and M. Wojcik and M. Wurm and O. Zaimidoroga and S. Zavatarelli and G. Zuzel",

note = "Funding Information: The Borexino program was made possible by funding from INFN (Italy), NSF (USA), BMBF, DFG and MPG (Germany), Rosnauka (Russia), MNiSW (Poland). We acknowledge the generous support of the Laboratori Nazionali del Gran Sasso (LNGS).",

year = "2012",

month = nov,

day = "11",

doi = "10.1016/j.nima.2012.01.006",

language = "English (US)",

volume = "692",

pages = "258--261",

journal = "Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment",

issn = "0168-9002",

publisher = "Elsevier B.V.",

}

Testera, G, Bellini, G, Benziger, J, Bick, D, Bonetti, S, Bonfini, G, Caccianiga, B, Cadonati, L, Calaprice, F, Carraro, C, Chavarria, A, Dangelo, D, Derbin, A, Etenko, A, Fomenko, K, Franco, D, Galbiati, C, Gazzana, S, Ghiano, C, Giammarchi, M, Göger-Neff, M, Goretti, A, Grandi, L, Guardincerri, E, Hardy, S, Ianni, A, Ianni, A, Korablev, D, Kobychev, V, Korga, G, Koshio, Y, Kryn, D, Laubenstein, M, Leung, M, Lewke, T, Litvinovich, E, Loer, B, Lombardi, P, Lombardi, F, Ludhova, L, MacHulin, I, Manecki, S, Maneschg, W, Manuzio, G, Meindl, Q, Meroni, E, Miramonti, L, Misiaszek, M, Montanari, D, Mosteiro, P, Muratova, V, Oberauer, L, Obolensky, M, Ortica, F, Pallavicini, M, Papp, L, Pena-Garay, C, Perasso, L, Perasso, S, Pocar, A, Raghavan, RS, Ranucci, G, Razeto, A, Romani, A, Sabelnikov, A, Saldanha, R, Salvo, C, Schönert, S, Simgen, H, Skorokhvatov, M, Smirnov, O, Sotnikov, A, Sukhotin, S, Suvorov, Y, Tartaglia, R, Vignaud, D, Vogelaar, RB, Von Feilitzsch, F, Winter, J, Wojcik, M, Wurm, M, Zaimidoroga, O, Zavatarelli, S & Zuzel, G 2012, 'High precision ⁷Be solar neutrinos measurement and day night effect obtained with Borexino', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 692, pp. 258-261. https://doi.org/10.1016/j.nima.2012.01.006

High precision ⁷Be solar neutrinos measurement and day night effect obtained with Borexino. / Testera, G.; Bellini, G.; Benziger, J. et al.
In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 692, 11.11.2012, p. 258-261.

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

TY - JOUR

T1 - High precision 7Be solar neutrinos measurement and day night effect obtained with Borexino

AU - Testera, G.

AU - Bellini, G.

AU - Benziger, J.

AU - Bick, D.

AU - Bonetti, S.

AU - Bonfini, G.

AU - Caccianiga, B.

AU - Cadonati, L.

AU - Calaprice, F.

AU - Carraro, C.

AU - Chavarria, A.

AU - Dangelo, D.

AU - Derbin, A.

AU - Etenko, A.

AU - Fomenko, K.

AU - Franco, D.

AU - Galbiati, C.

AU - Gazzana, S.

AU - Ghiano, C.

AU - Giammarchi, M.

AU - Göger-Neff, M.

AU - Goretti, A.

AU - Grandi, L.

AU - Guardincerri, E.

AU - Hardy, S.

AU - Ianni, Aldo

AU - Ianni, Andrea

AU - Korablev, D.

AU - Kobychev, V.

AU - Korga, G.

AU - Koshio, Y.

AU - Kryn, D.

AU - Laubenstein, M.

AU - Leung, M.

AU - Lewke, T.

AU - Litvinovich, E.

AU - Loer, B.

AU - Lombardi, P.

AU - Lombardi, F.

AU - Ludhova, L.

AU - MacHulin, I.

AU - Manecki, S.

AU - Maneschg, W.

AU - Manuzio, G.

AU - Meindl, Q.

AU - Meroni, E.

AU - Miramonti, L.

AU - Misiaszek, M.

AU - Montanari, D.

AU - Mosteiro, P.

AU - Muratova, V.

AU - Oberauer, L.

AU - Obolensky, M.

AU - Ortica, F.

AU - Pallavicini, M.

AU - Papp, L.

AU - Pena-Garay, C.

AU - Perasso, L.

AU - Perasso, S.

AU - Pocar, A.

AU - Raghavan, R. S.

AU - Ranucci, G.

AU - Razeto, A.

AU - Romani, A.

AU - Sabelnikov, A.

AU - Saldanha, R.

AU - Salvo, C.

AU - Schönert, S.

AU - Simgen, H.

AU - Skorokhvatov, M.

AU - Smirnov, O.

AU - Sotnikov, A.

AU - Sukhotin, S.

AU - Suvorov, Y.

AU - Tartaglia, R.

AU - Vignaud, D.

AU - Vogelaar, R. B.

AU - Von Feilitzsch, F.

AU - Winter, J.

AU - Wojcik, M.

AU - Wurm, M.

AU - Zaimidoroga, O.

AU - Zavatarelli, S.

AU - Zuzel, G.

N1 - Funding Information: The Borexino program was made possible by funding from INFN (Italy), NSF (USA), BMBF, DFG and MPG (Germany), Rosnauka (Russia), MNiSW (Poland). We acknowledge the generous support of the Laboratori Nazionali del Gran Sasso (LNGS).

PY - 2012/11/11

Y1 - 2012/11/11

N2 - We report the direct measurement of the 7Be solar neutrino signal rate performed with the Borexino detector at the Laboratori Nazionali del Gran Sasso and the search for a day-night asymmetry of this interaction rate. The interaction rate of the 0.862 MeV 7Be neutrinos is 46±1.6(stat)-1.61.5(syst) counts/(day·100 ton). The hypothesis of no oscillation for this solar neutrinos is inconsistent with our measurement at the 5.8σ C.L. Our result is the first direct measurement of solar neutrinos with an accuracy better than 5%. We report the survival probability for solar νe in the transition region between matter-enhanced and vacuum-driven oscillations. The measured day night asymmetry is Adn=0.001±0.012 (stat)±0.007 (syst), in agreement with the predicition of MSW-LMA neutrino [13] oscillations. This result discourages MSW oscillations with mixing parameters in the LOW region at more than 8.5σ, meaning that this region is, for the first time, strongly rejected without the assumption of CPT symmetry. The result can also be used to constrain some neutrino oscillation scenarios involving new physics.

AB - We report the direct measurement of the 7Be solar neutrino signal rate performed with the Borexino detector at the Laboratori Nazionali del Gran Sasso and the search for a day-night asymmetry of this interaction rate. The interaction rate of the 0.862 MeV 7Be neutrinos is 46±1.6(stat)-1.61.5(syst) counts/(day·100 ton). The hypothesis of no oscillation for this solar neutrinos is inconsistent with our measurement at the 5.8σ C.L. Our result is the first direct measurement of solar neutrinos with an accuracy better than 5%. We report the survival probability for solar νe in the transition region between matter-enhanced and vacuum-driven oscillations. The measured day night asymmetry is Adn=0.001±0.012 (stat)±0.007 (syst), in agreement with the predicition of MSW-LMA neutrino [13] oscillations. This result discourages MSW oscillations with mixing parameters in the LOW region at more than 8.5σ, meaning that this region is, for the first time, strongly rejected without the assumption of CPT symmetry. The result can also be used to constrain some neutrino oscillation scenarios involving new physics.

KW - Liquid scintillators

KW - Low background detectors

KW - Neutrino oscillations

KW - Solar neutrinos

UR - http://www.scopus.com/inward/record.url?scp=84866619583&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84866619583&partnerID=8YFLogxK

U2 - 10.1016/j.nima.2012.01.006

DO - 10.1016/j.nima.2012.01.006

M3 - Article

AN - SCOPUS:84866619583

SN - 0168-9002

VL - 692

SP - 258

EP - 261

JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

ER -