Absence of a day-night asymmetry in the 7Be solar neutrino rate in Borexino

G. Bellini; J. Benziger; D. Bick; S. Bonetti; G. Bonfini; M. Buizza Avanzini; B. Caccianiga; L. Cadonati; F. Calaprice; C. Carraro; P. Cavalcante; A. Chavarria; D. D'Angelo; S. Davini; A. Derbin; A. Etenko; F. von Feilitzsch; 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; V. Kobychev; D. Korablev; G. Korga; Y. Koshio; D. Kryn; M. Laubenstein; 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. Peña-Garay; L. Perasso; S. Perasso; A. Pocar; R. S. Raghavan; G. Ranucci; A. Razeto; A. Re; A. Romani; A. Sabelnikov; R. Saldanha; C. Salvo; S. Schönert; H. Simgen; M. Skorokhvatov; O. Smirnov; A. Sotnikov; S. Sukhotin; Y. Suvorov; R. Tartaglia; G. Testera; D. Vignaud; R. B. Vogelaar; J. Winter; M. Wojcik; A. Wright; M. Wurm; J. Xu; O. Zaimidoroga; S. Zavatarelli; G. Zuzel

doi:10.1016/j.physletb.2011.11.025

Absence of a day-night asymmetry in the ⁷Be solar neutrino rate in Borexino

G. Bellini, J. Benziger, D. Bick, S. Bonetti, G. Bonfini, M. Buizza Avanzini, B. Caccianiga, L. Cadonati, F. Calaprice, C. Carraro, P. Cavalcante, A. Chavarria, D. D'Angelo, S. Davini, A. Derbin, A. Etenko, F. von Feilitzsch, K. Fomenko, D. Franco, C. GalbiatiS. Gazzana, C. Ghiano, M. Giammarchi, M. Göger-Neff, A. Goretti, L. Grandi, E. Guardincerri, S. Hardy, Aldo Ianni, Andrea Ianni, V. Kobychev, D. Korablev, G. Korga, Y. Koshio, D. Kryn, M. Laubenstein, 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. Peña-Garay, L. Perasso, S. Perasso, A. Pocar, R. S. Raghavan, G. Ranucci, A. Razeto, A. Re, A. Romani, A. Sabelnikov, R. Saldanha, C. Salvo, S. Schönert, H. Simgen, M. Skorokhvatov, O. Smirnov, A. Sotnikov, S. Sukhotin, Y. Suvorov, R. Tartaglia, G. Testera, D. Vignaud, R. B. Vogelaar, J. Winter, M. Wojcik, A. Wright, M. Wurm, J. Xu, O. Zaimidoroga, S. Zavatarelli, G. Zuzel

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Abstract

We report the result of a search for a day-night asymmetry in the ⁷Be solar neutrino interaction rate in the Borexino detector at the Laboratori Nazionali del Gran Sasso (LNGS) in Italy. The measured asymmetry is A _dn=0.001±0.012 (stat)±0.007 (syst), in agreement with the prediction of MSW-LMA solution for neutrino oscillations. This result disfavors MSW oscillations with mixing parameters in the LOW region at more than 8.5 Σ. This region is, for the first time, strongly disfavored without the use of reactor anti-neutrino data and therefore the assumption of CPT symmetry. The result can also be used to constrain some neutrino oscillation scenarios involving new physics.

Original language	English
Pages (from-to)	22-26
Number of pages	5
Journal	Physics Letters B
Volume	707
Issue number	1
DOIs	https://doi.org/10.1016/j.physletb.2011.11.025
State	Published - 16 Jan 2012

Keywords

CPT violation
Day-night effect
Neutrino oscillations
Solar neutrinos

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10.1016/j.physletb.2011.11.025

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Bellini, G., Benziger, J., Bick, D., Bonetti, S., Bonfini, G., Buizza Avanzini, M., Caccianiga, B., Cadonati, L., Calaprice, F., Carraro, C., Cavalcante, P., Chavarria, A., D'Angelo, D., Davini, S., Derbin, A., Etenko, A., von Feilitzsch, F., Fomenko, K., Franco, D., ... Zuzel, G. (2012). Absence of a day-night asymmetry in the ⁷Be solar neutrino rate in Borexino. Physics Letters B, 707(1), 22-26. https://doi.org/10.1016/j.physletb.2011.11.025

@article{99c951647a2d43a48da52e317d11621d,

title = "Absence of a day-night asymmetry in the 7Be solar neutrino rate in Borexino",

abstract = "We report the result of a search for a day-night asymmetry in the 7Be solar neutrino interaction rate in the Borexino detector at the Laboratori Nazionali del Gran Sasso (LNGS) in Italy. The measured asymmetry is A dn=0.001±0.012 (stat)±0.007 (syst), in agreement with the prediction of MSW-LMA solution for neutrino oscillations. This result disfavors MSW oscillations with mixing parameters in the LOW region at more than 8.5 Σ. This region is, for the first time, strongly disfavored without the use of reactor anti-neutrino data and therefore the assumption of CPT symmetry. The result can also be used to constrain some neutrino oscillation scenarios involving new physics.",

keywords = "CPT violation, Day-night effect, Neutrino oscillations, Solar neutrinos",

author = "G. Bellini and J. Benziger and D. Bick and S. Bonetti and G. Bonfini and {Buizza Avanzini}, M. and B. Caccianiga and L. Cadonati and F. Calaprice and C. Carraro and P. Cavalcante and A. Chavarria and D. D'Angelo and S. Davini and A. Derbin and A. Etenko and {von Feilitzsch}, F. 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 V. Kobychev and D. Korablev and G. Korga and Y. Koshio and D. Kryn and M. Laubenstein 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. Pe{\~n}a-Garay and L. Perasso and S. Perasso and A. Pocar and Raghavan, {R. S.} and G. Ranucci and A. Razeto and A. Re 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 G. Testera and D. Vignaud and Vogelaar, {R. B.} and J. Winter and M. Wojcik and A. Wright and M. Wurm and J. Xu and O. Zaimidoroga and S. Zavatarelli and G. Zuzel",

note = "Funding Information: This work was funded by INFN and MIUR PRIN 2007 (Italy), NSF (USA), BMBF , DFG , and MPG (Germany), NRC Kurchatov Institute (Russia), and MNiSW (Poland). We gratefully acknowledge the generous support of the Laboratori Nazionali del Gran Sasso .",

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doi = "10.1016/j.physletb.2011.11.025",

language = "English",

volume = "707",

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journal = "Physics Letters B",

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Bellini, G, Benziger, J, Bick, D, Bonetti, S, Bonfini, G, Buizza Avanzini, M, Caccianiga, B, Cadonati, L, Calaprice, F, Carraro, C, Cavalcante, P, Chavarria, A, D'Angelo, D, Davini, S, Derbin, A, Etenko, A, von Feilitzsch, F, 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, Kobychev, V, Korablev, D, Korga, G, Koshio, Y, Kryn, D, Laubenstein, 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, Peña-Garay, C, Perasso, L, Perasso, S, Pocar, A, Raghavan, RS, Ranucci, G, Razeto, A, Re, 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, Testera, G, Vignaud, D, Vogelaar, RB, Winter, J, Wojcik, M, Wright, A, Wurm, M, Xu, J, Zaimidoroga, O, Zavatarelli, S & Zuzel, G 2012, 'Absence of a day-night asymmetry in the ⁷Be solar neutrino rate in Borexino', Physics Letters B, vol. 707, no. 1, pp. 22-26. https://doi.org/10.1016/j.physletb.2011.11.025

TY - JOUR

T1 - Absence of a day-night asymmetry in the 7Be solar neutrino rate in Borexino

AU - Bellini, G.

AU - Benziger, J.

AU - Bick, D.

AU - Bonetti, S.

AU - Bonfini, G.

AU - Buizza Avanzini, M.

AU - Caccianiga, B.

AU - Cadonati, L.

AU - Calaprice, F.

AU - Carraro, C.

AU - Cavalcante, P.

AU - Chavarria, A.

AU - D'Angelo, D.

AU - Davini, S.

AU - Derbin, A.

AU - Etenko, A.

AU - von Feilitzsch, F.

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 - Kobychev, V.

AU - Korablev, D.

AU - Korga, G.

AU - Koshio, Y.

AU - Kryn, D.

AU - Laubenstein, 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 - Peña-Garay, C.

AU - Perasso, L.

AU - Perasso, S.

AU - Pocar, A.

AU - Raghavan, R. S.

AU - Ranucci, G.

AU - Razeto, A.

AU - Re, 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 - Testera, G.

AU - Vignaud, D.

AU - Vogelaar, R. B.

AU - Winter, J.

AU - Wojcik, M.

AU - Wright, A.

AU - Wurm, M.

AU - Xu, J.

AU - Zaimidoroga, O.

AU - Zavatarelli, S.

AU - Zuzel, G.

N1 - Funding Information: This work was funded by INFN and MIUR PRIN 2007 (Italy), NSF (USA), BMBF , DFG , and MPG (Germany), NRC Kurchatov Institute (Russia), and MNiSW (Poland). We gratefully acknowledge the generous support of the Laboratori Nazionali del Gran Sasso .

PY - 2012/1/16

Y1 - 2012/1/16

N2 - We report the result of a search for a day-night asymmetry in the 7Be solar neutrino interaction rate in the Borexino detector at the Laboratori Nazionali del Gran Sasso (LNGS) in Italy. The measured asymmetry is A dn=0.001±0.012 (stat)±0.007 (syst), in agreement with the prediction of MSW-LMA solution for neutrino oscillations. This result disfavors MSW oscillations with mixing parameters in the LOW region at more than 8.5 Σ. This region is, for the first time, strongly disfavored without the use of reactor anti-neutrino data and therefore the assumption of CPT symmetry. The result can also be used to constrain some neutrino oscillation scenarios involving new physics.

AB - We report the result of a search for a day-night asymmetry in the 7Be solar neutrino interaction rate in the Borexino detector at the Laboratori Nazionali del Gran Sasso (LNGS) in Italy. The measured asymmetry is A dn=0.001±0.012 (stat)±0.007 (syst), in agreement with the prediction of MSW-LMA solution for neutrino oscillations. This result disfavors MSW oscillations with mixing parameters in the LOW region at more than 8.5 Σ. This region is, for the first time, strongly disfavored without the use of reactor anti-neutrino data and therefore the assumption of CPT symmetry. The result can also be used to constrain some neutrino oscillation scenarios involving new physics.

KW - CPT violation

KW - Day-night effect

KW - Neutrino oscillations

KW - Solar neutrinos

UR - http://www.scopus.com/inward/record.url?scp=84855192691&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2011.11.025

DO - 10.1016/j.physletb.2011.11.025

M3 - Article

AN - SCOPUS:84855192691

SN - 0370-2693

VL - 707

SP - 22

EP - 26

JO - Physics Letters B

JF - Physics Letters B

IS - 1

ER -

Absence of a day-night asymmetry in the ⁷Be solar neutrino rate in Borexino

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