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, Yusuke 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

Research output: Contribution to journalArticle

92 Citations (Scopus)

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 languageEnglish
Pages (from-to)22-26
Number of pages5
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume707
Issue number1
DOIs
Publication statusPublished - Jan 16 2012
Externally publishedYes

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solar neutrinos
night
neutrinos
asymmetry
oscillations
Italy
reactors
physics
detectors
symmetry
predictions
interactions

Keywords

  • CPT violation
  • Day-night effect
  • Neutrino oscillations
  • Solar neutrinos

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Absence of a day-night asymmetry in the 7Be solar neutrino rate in Borexino. / 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, Aldo; Ianni, Andrea; Kobychev, V.; Korablev, D.; Korga, G.; Koshio, Yusuke; 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, R. S.; 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, R. B.; Winter, J.; Wojcik, M.; Wright, A.; Wurm, M.; Xu, J.; Zaimidoroga, O.; Zavatarelli, S.; Zuzel, G.

In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 707, No. 1, 16.01.2012, p. 22-26.

Research output: Contribution to journalArticle

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, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 707, no. 1, pp. 22-26. https://doi.org/10.1016/j.physletb.2011.11.025
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, Aldo ; Ianni, Andrea ; Kobychev, V. ; Korablev, D. ; Korga, G. ; Koshio, Yusuke ; 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, R. S. ; 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, R. B. ; Winter, J. ; Wojcik, M. ; Wright, A. ; Wurm, M. ; Xu, J. ; Zaimidoroga, O. ; Zavatarelli, S. ; Zuzel, G. / Absence of a day-night asymmetry in the 7Be solar neutrino rate in Borexino. In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 2012 ; Vol. 707, No. 1. pp. 22-26.
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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, Yusuke

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.

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

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JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

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