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  Absence of day-night asymmetry of 862 keV Be-7 solar neutrino rate in Borexino and MSW oscillation parameters

Bellini, G., Benziger, J., Bick, D., Bonetti, S., Bonfini, G., Avanzini, M. B., et al. (2012). Absence of day-night asymmetry of 862 keV Be-7 solar neutrino rate in Borexino and MSW oscillation parameters. Physics Letters B, 707(1), 22-26. doi:10.1016/j.physletb.2011.11.025.

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Bellini, G., Author
Benziger, J., Author
Bick, D., Author
Bonetti, S., Author
Bonfini, G., Author
Avanzini, M. Buizza, Author
Caccianiga, B., Author
Cadonati, L., Author
Calaprice, F., Author
Carraro, C., Author
Cavalcante, P., Author
Chavarria, A., Author
DAngelo, D., Author
Davinic, S., Author
Derbinm, A., Author
Etenkog, A., Author
von Feilitzsch, F., Author
Fomenko, K., Author
Franco, D., Author
Galbiati, C., Author
Gazzana, S., AuthorGhiano, C., AuthorGiammarchi, M., AuthorGöger-Neff, M., AuthorGoretti, A., AuthorGrandi, L., AuthorGuardincerri, E., AuthorHardy, S., AuthorIanni, Aldo, AuthorIanni, Andrea, AuthorKobychev, V., AuthorKorablev, D., AuthorKorga, G., AuthorKoshio, Y., AuthorKryn, D., AuthorLaubenstein, M., AuthorLewke, T., AuthorLitvinovich, E., AuthorLoer, B., AuthorLombardi, P., AuthorLombardi, F., AuthorLudhova, L., AuthorMachulin, I., AuthorManecki, S., AuthorManeschg, W.1, Author           Manuzio, G., AuthorMeindl, Q., AuthorMeroni, E., AuthorMiramonti, L., AuthorMisiaszek, M., AuthorMontanari, D., AuthorMosteiro, P., AuthorMuratova, V., AuthorOberauer, L., AuthorObolensky, M., AuthorOrtica, F., AuthorPallavicini, M., AuthorPapp, L., AuthorPeña-Garay, C., AuthorPerasso, L., AuthorPerasso, S., AuthorPocar, A., AuthorRaghavan, R.S., AuthorRanucci, G., AuthorRazeto, A., AuthorRe, A., AuthorRomani, A., AuthorSabelnikov, A., AuthorSaldanha, R., AuthorSalvo, C., AuthorSchoenert, S.1, Author           Simgen, H.1, Author           Skorokhvatov, M., AuthorSmirnov, O., AuthorSotnikov, A., AuthorSukhotin, S., AuthorSuvorov, Y., AuthorTartaglia, R., AuthorTestera, G., AuthorVignaud, D., AuthorVogelaar, R.B., AuthorWinter, J., AuthorWojcik, M., AuthorWright, A., AuthorWurm, M., AuthorXu, J., AuthorZaimidoroga, O., AuthorZavatarelli, S., AuthorZuzel, G., Author more..
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1Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society, ou_904549              

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Free keywords: High Energy Physics - Experiment, hep-ex
 Abstract: We report on a search for the day-night asymmetry of the Be-7 solar neutrino rate measured by Borexino at the Laboratori Nazionali del Gran Sasso (LNGS), Italy. The measured value, Adn=0.001 +- 0.012 (stat) +- 0.007 (syst), shows the absence of a significant asymmetry. This result alone rejects the so-called LOW solution at more than 8.5 sigma. Combined with the other solar neutrino data, it isolates the Large Mixing Angle (LMA) -- MSW solution at DeltaChi2 > 190 without relying on the assumption of CPT symmetry in the neutrino sector. We also show that including the day-night asymmetry, data from Borexino alone restricts the MSW neutrino oscillations to the LMA solution at 90% confidence level.

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Language(s): eng - English
 Dates: 2011-04-122012-01-052012-01-16
 Publication Status: Issued
 Pages: 5 figures, published on Phys. Lett B
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Degree: -

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Title: Physics Letters B
Source Genre: Journal
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Publ. Info: North-Holland
Pages: 5 Volume / Issue: 707 (1) Sequence Number: - Start / End Page: 22 - 26 Identifier: ISSN: 0370-2693
CoNE: https://pure.mpg.de/cone/journals/resource/954925524777