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7 results on '"Manno, I"'

1. Study of phenylxylylethane (PXE) as scintillator for low energy neutrino experiments

Author

Back, H. O., Balata, M, DE BARIC, A, Beaud, T, DE BELLEFOND, A, Bellini, G, Benziger, J, Bonetti, S, Brigatti, A, Buck, C, Caccianiga, B, Cadonati, L, Calaprice, F, Cecchet, G, Chen, M, DI CREDICO, A, Dadound, O, Dangelo, D, Derbin, A, Deutschk, M, Elisei, F, Etenko, A, VON FEILITZSCHI, F, Fernholzf, R, Ford, R, Franco, D, Freudigerg, B, Galbiati, C, Gatti, Flavio, Gazzana, S, Giammarchie, M. G., Giugni, D, GÖGER NEFF, M, Goretti, A, Grieb, C, DE HAASF, E, Hagneri, C, Hampelg, W, Harding, E, Hartmann, F. X., Hertrich, T, Hess, H, Heusserg, G, Ianni, A, Ianni, A. M., DE KERRET, H, Kiko, J, Kirsten, T, Korga, G, Korschinek, G, Kozlov, Y, Kryn, D, Laubenstein, M, Lendvai, C, Loeser, F, Lombardi, P, Malvezzi, S, Maneira, J, Manno, I, Manuzio, Daniela, Manuzio, Giulio, Masetti, F, Martemianov, A, Mazzucato, U, Mccarty, K, Meroni, E, Miramonti, L, Monzani, M. E., Musico, P, Niedermeier, L, Oberauer, L, Obolensky, M, Ortica, F, Pallavicini, Marco, Papp, L, Parmeggiano, S, Perasso, L, Pocar, A, Raghavan, R. S., Ranucci, G, Rau, W, Razeto, A, Resconi, E, Sabelnikov, A, Salvo, C, Scardaoni, R, Schimizzi, D, Schönert, S, MAIL THE CORRESPONDING AUTHOR, E., Schuhbecki, K. H., Seitzi, E., Simgeng, H., Shuttf, T., Skorokhvatovm, M., Smirnovj, O., Sonnenschein, A, Sotnikov, A, Sukhoti, S, Tarasenkov, V, Tartaglia, R, Testera, G, Vignaud, D, Vogelaar, R. B., Vyrodov, V, Wojcik, M, Zaimidoroga, O, and Zuzel, G.

Subjects
Physics, Nuclear and High Energy Physics, Scintillation, Silica gel, Solar neutrino, Analytical chemistry, Scintillator, Solvent, Nuclear physics, chemistry.chemical_compound, chemistry, Impurity, Neutrino, Instrumentation, Borexino
Abstract

We report on the study of a new liquid scintillator target for neutrino interactions in the framework of the research and development program of the Borexino solar neutrino experiment. The scintillator consists of 1,2-dimethyl-4-(1-phenylethyl)-benzene (phenyl-o-xylylethane, PXE) as solvent and 1,4-diphenylbenzene (para-Terphenyl, p-Tp) as primary and 1,4-bis(2-methylstyryl)benzene (bis-MSB) as secondary solute. The density close to that of water and the high flash point makes it an attractive option for large scintillation detectors in general. The study focused on optical properties, radioactive trace impurities and novel purification techniques of the scintillator. Attenuation lengths of the scintillator mixture of 12 m at 430 nm were achieved after purification with an alumina column. A radiocarbon isotopic ratio of C 14 / C 12 = 9.1 × 10 - 18 has been measured in the scintillator. Initial trace impurities, e.g. 238U at 3.2 × 10 - 14 g / g could be purified to levels below 1 × 10 - 17 g / g by silica gel solid column purification.

Published
2008

2. New limits on nucleon decays into invisible channels with the BOREXINO counting test facility

Author

Back, H. O., Balata, DE BARI, A., Beau, T., DE BELLEFON, A., Bellini, G., Benziger, J., Bonetti, S., Brigatti, A., Buck, C., Caccianiga, B., Cadonati, L., Calaprice, F. P., Cecchet, G., Chen, M., DE HAAS, E., DI CREDICO, A., Dadoun, O., D'Angelo, D., Derbin, A., Deutsch, M., Elisei, F., Etenko, A., VON FEILITZSCH, F., Fernholz, R., Ford, R., Franco, D., Freudiger, B., Galbiati, C., Gatti, Flavio, Gazzana, S., Giammarchi, M. G., Giugni, D., Golubchikov, A., Goretti, A., Grieb, C., Hagner, T., Hagner, C., Hampel, W., Harding, E., Hartmann, F., G. HEUSSER G., Ianni, A., Ianni, A. M., DE KERRET, H., Kiko, J., Kirsten, T., Kohler, M., Korga, G., Korschinek, G., Kryn, D., Laubenstein, M., Lendvai, C., Lombardi, P., Machulin, I., Malvezzi, S., Maneira, J., Manno, I., Manuzio, Giulio, Masetti, F., Martemiamov, A., Mazzucato, U., Mccarty, K., Meroni, E., Miramonti, L., Monzani, M. E., Musico, P., Neder, H., Neff, M., Oberauer, L., Obolensky, M., Ortica, F., Pallavicini, Marco, Papp, L., Perasso, L., Pocar, A., Raghavan, R. S., Ranucci, G., Rau, W., Razeto, A., Resconi, E., Sabelnikov, A., Salvo, C., Scardaoni, R., Schoenert, S., Seidel, H., Simgen, H., Shutt, T., Skorokhvatov, M., Smirnov, O., Sonnenschein, A., Sotnikov, A., Sukhotin, S., Tarasenkov, V., Tartaglia, R., Testera, G., Vignaud, D., Vitale, Sandro, Vogelaar, R. B., Vyrodov, V., Woijcik, M., Zaimidoroga, O., Zuzel, G., Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Borexino, and Lantz, Simone

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Test facility, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, FOS: Physical sciences, 01 natural sciences, High Energy Physics - Experiment, 3. Good health, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Underground laboratory, High Energy Physics::Experiment, Nuclide, Neutrino, 010306 general physics, Nucleon, Borexino
Abstract

The results of background measurements with the second version of the BOREXINO Counting Test Facility (CTF-II), installed in the Gran Sasso Underground Laboratory, were used to obtain limits on the instability of nucleons, bounded in nuclei, for decays into invisible channels ($inv$): disappearance, decays to neutrinos, etc. The approach consisted of a search for decays of unstable nuclides resulting from $N$ and $NN$ decays of parents $^{12}$C, $^{13}$C and $^{16}$O nuclei in the liquid scintillator and the water shield of the CTF. Due to the extremely low background and the large mass (4.2 ton) of the CTF detector, the most stringent (or competitive) up-to-date experimental bounds have been established: $��(n \to inv) > 1.8 \cdot 10^{25}$ y, $��(p \to inv) > 1.1 \cdot 10^{26}$ y, $��(nn \to inv) > 4.9 \cdot 10^{25}$ y and $��(pp \to inv) > 5.0 \cdot 10^{25}$ y, all at 90% C.L., 22 pages, 3 figures,submitted to Phys.Lett. B

Published
2003

3. Science and technology of Borexino: a real-time detector for low energy solar neutrinos

Author

Alimonti, G., Arpesella, C., Beck, H. O., Balata, Beau, T., Bellini, G., Benziger, J., Bonetti, S., Brigatti, A., Caccianiga, B., Cadonati, L., Calaprice, F. P., Cecchet, G., Chen, M., Debari, A., DE HAAS, E., Donghi, O., Deutsch, M., Elisei, F., VON FEILITZSCH, F., Fernholz, R., Ford, R., Freudiger, B., Garagiola, A., Gatti, Flavio, Gazzana, S., Giammarchi, M. G., Giugni, D., Golubchikov, A., Goretti, A., Grieb, C., Hagner, T., Hagner, C., Hampel, W., Harding, E., Hartmann, F., VON HENTIG, R., Hess, H., G. HEUSSER G., Ianni, A., Inzani, P., DE KERRET, H., Kidner, S., Kiko, J., Kirsten, Korga, G., Korshinek, Krin, D., Lagomarsino, Vittorio, Laubenstein, M., Loeser, F., Lombardi, P., Magni, S., Malvezzi, S., Maneira, J., Manno, I., Manuzio, Giulio, Masetti, F., Mazzucato, U., Meroni, E., Musico, P., Neder, H., Neff, M., Nisi, S., Nostro, A., Oberauer, L., Obolensky, M., Pallavicini, Marco, Papp, L., Perasso, L., Pocar, A., Raghavan, R. S., Ranucci, G., Rau, W., Resconi, E., Riedel, Sabelnikov, A., Saggese, P., Salvo, C., Scardaoni, R., Schoenert, S., Shuubeck, K. H., Seidel, H., Shutt, Sonnenschein, Smirnov, O., Sotnikov, A., Skorokhvatov, M., Sukhotin, S., Tartaglia, R., Testera, G., Vogelaar, R. B., Vitale, Sandro, Woijcik, M., Zaimidoroga, O., and Zakharov, Y.

Subjects
Physics, Scintillation, Particle physics, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Solar neutrino, Detector, Astronomy and Astrophysics, Solar neutrino problem, 01 natural sciences, 7. Clean energy, Physics::Geophysics, Low energy, 0103 physical sciences, Background suppression, High Energy Physics::Experiment, Neutrino, 010306 general physics, Borexino
Abstract

BOREXINO, a real-time device for low energy neutrino spectroscopy is nearing completion of construction in the underground laboratories at Gran Sasso, Italy (LNGS). The experiment's goal is the direct measurement of the flux of 7Be solar neutrinos of all flavors via neutrino-electron scattering in an ultra-pure scintillation liquid. Seeded by a series of innovations which were brought to fruition by large scale operation of a 4-ton test detector at LNGS, a new technology has been developed for BOREXINO. It enables sub-MeV solar neutrino spectroscopy for the first time. This paper describes the design of BOREXINO, the various facilities essential to its operation, its spectroscopic and background suppression capabilities and a prognosis of the impact of its results towards resolving the solar neutrino problem. BOREXINO will also address several other frontier questions in particle physics, astrophysics and geophysics.

Published
2002

4. Study of neutrino electromagnetic properties with the prototype of the Borexino detector

Author

Back, H. O., Balata, DE BARI, A., Beau, T., DE BELLEFON, A., Bellini, G., Benziger, J., Bonetti, S., Brigatti, A., Buck, C., Caccianiga, B., Cadonati, L., Calaprice, F. P., Cecchet, G., Chen, M., DE HAAS, E., DI CREDICO, A., Dadoun, O., D'Angelo, D., Derbin, A., Deutsch, M., Elisei, F., Etenko, A., VON FEILITZSCH, F., Fernholz, R., Ford, R., Franco, D., Freudiger, B., Galbiati, C., Gatti, Flavio, Gazzana, S., Giammarchi, M. G., Giugni, D., Golubchikov, A., Goretti, A., Grieb, C., Hagner, T., Hagner, C., Hampel, W., Harding, E., Hartmann, F., G. HEUSSER G., Ianni, A., Ianni, A. M., DE KERRET, H., Kiko, J., Kirsten, T., Kohler, M., Korga, G., Korschinek, G., Kryn, D., Laubenstein, M., Lendvai, C., Lombardi, P., Machulin, I., Malvezzi, S., Maneira, J., Manno, I., Manuzio, Giulio, Masetti, F., Martemiamov, A., Mazzucato, U., Mccarty, K., Meroni, E., Miramonti, L., Monzani, M. E., Musico, P., Neder, H., Neff, M., Oberauer, L., Obolensky, M., Ortica, F., Pallavicini, Marco, Papp, L., Perasso, L., Pocar, A., Raghavan, R. S., Ranucci, G., Rau, W., Razeto, A., Resconi, E., Sabelnikov, A., Salvo, C., Scardaoni, R., Schoenert, S., Seidel, H., Simgen, H., Shutt, T., Skorokhvatov, M., Smirnov, O., Sonnenschein, A., Sotnikov, A., Sukhotin, S., Tarasenkov, V., Tartaglia, R., Testera, G., Vignaud, D., Vitale, Sandro, Vogelaar, R. B., Vyrodov, V., Woijcik, M., Zaimidoroga, O., and Zuzel, G.

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Standard solar model, Physics::Instrumentation and Detectors, Solar neutrino, High Energy Physics::Phenomenology, Solar neutrino problem, Nuclear physics, Neutrino detector, Measurements of neutrino speed, High Energy Physics::Experiment, Neutrino, Neutrino oscillation, Borexino
Abstract

The results of background measurements with the prototype of the Borexino detector (CTF) have been used to obtain an upper bound on the neutrino magnetic moment, μ ν . The new upper limit for μ ν from pp and 7 Be solar neutrinos is (5.5×10 −10 ) μ B (90% c.l.) in the Standard Solar Model scenario. This is the first limit on μ ν obtained using sub-MeV neutrinos. The sensitivity of the prototype to the neutrino charge radius and the neutrino radiative decay are also presented.

Published
2003

5. New experimental limits on heavy neutrino mixing in 8B- decay obtained with the BOREXINO counting test facility

Author

Back, H. O., Balata, M, DE BARIC, A, Beaud, T, DE BELLEFOND, A, Bellini, G, Benziger, J, Bonetti, S, Brigatti, A, Buck, C, Caccianiga, B, Cadonati, L, Calaprice, F, Cecchet, G, Chen, M, DI CREDICO, A, Dadound, O, Dangelo, D, Derbin, A, Deutschk, M, Elisei, F, Etenko, A, VON FEILITZSCHI, F, Fernholzf, R, Ford, R, Franco, D, Freudigerg, B, Galbiati, C, Gatti, Flavio, Gazzana, S, Giammarchie, M. G., Giugni, D, GÖGER NEFF, M, Goretti, A, Grieb, C, DE HAASF, E, Hagneri, C, Hampelg, W, Harding, E, Hartmann, F. X., Hertrich, T, Hess, H, Heusserg, G, Ianni, A, Ianni, A. M., DE KERRET, H, Kiko, J, Kirsten, T, Korga, G, Korschinek, G, Kozlov, Y, Kryn, D, Laubenstein, M, Lendvai, C, Loeser, F, Lombardi, P, Malvezzi, S, Maneira, J, Manno, I, Manuzio, D, Manuzio, G, Masetti, F, Martemianov, A, Mazzucato, U, Mccarty, K, Meroni, E, Miramonti, L, Monzani, M. E., Musico, P, Niedermeier, L, Oberauer, L, Obolensky, M, Ortica, F, Pallavicini, Marco, Papp, L, Parmeggiano, S, Perasso, L, Pocar, A, Raghavan, R. S., Ranucci, G, Rau, W, Razeto, A, Resconi, E, Sabelnikov, A, Salvo, C, Scardaoni, R, Schimizzi, D, Schönert, S, MAIL THE CORRESPONDING AUTHOR, E., Schuhbecki, K. H., Seitzi, E., Simgeng, H., Shuttf, T., Skorokhvatovm, M., Smirnovj, O., Sonnenschein, A, Sotnikov, A, Sukhoti, S, Tarasenkov, V, Tartaglia, R, Testera, G, Vignaud, D, Vogelaar, R. B., Vyrodov, V, Wojcik, M, Zaimidoroga, O, Zuzel, G., Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Borexino, and Lantz, Simone

Subjects
Physics, Particle physics, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, Coupling (probability), 7. Clean energy, 01 natural sciences, Nuclear physics, Massless particle, Particle decay, Neutrino detector, 13. Climate action, Antimatter, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Neutrino, 010306 general physics, Borexino, Lepton
Abstract

If heavy neutrinos with mass $$\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} $$ are emitted in the decays of 8B in the Sun, then νH→νL+e ++e − decays should be observed. In the present work, the results of background measurements with the Borexino Counting Test Facility have been used to obtain bounds on the number of these decays. As a result, new limits on the coupling |U eH|2of a massive neutrino in the range of 1.1 MeV to 12 MeV have been derived (|U eH|2≤10−3−10−5). The obtained limits on the mixing parameter are stronger than obtained in previous experiments using nuclear reactors and accelerators.

Published
2003

6. Ultra-low background measurements in a large volume underground detector

Author

Alimonti, G., Anghloher, G., Arpesella, C., Balata, M., Bellini, G., Benziger, J., Bonetti, S., Cadonati, L., Calaprice, F. P., Cecchet, G., Chen, M., Darnton, M., Debari, A., Deutsch, M., Elisei, F., VON FEILITZSCH, F., Galbiati, C., Gatti, Flavio, Giammarchi, M. G., Giugni, D., Goldbrunne, T., Golubchikov, A., Goretti, A., Hagner, T., Hartmann, F., VON HENTIG, R., Heusser, G., Ianni, A., Jochum, J., Johnson, M., Laubenstein, M., Lombardi, P., Magni, S., Malvezzi, S., Manno, I., Manuzio, Giulio, Masetti, F., Mazzucato, U., Meroni, E., Neff, M., Nisi, S., Nostro, A., Oberauer, L., Perotti, A., Preda, A., Raghavan, P., Raghavan, R. S., Ranucci, G., Resconi, E., Ruscitti, P., Scardaoni, R., Schoenert, S., Smirnov, O., Tartaglia, R., Testera, G., Ullucci, P., Vogelaar, R. B., Vitale, Sandro, Wpjcik, M., and Zaimidoroga, O.

Subjects
Nuclear physics, Physics, Scintillation, Volume (thermodynamics), Solar neutrino, Detector, Astronomy and Astrophysics, Natural abundance, Neutrino, Scintillator, Borexino
Abstract

A large volume (4.8 m3) liquid scintillator detector has been running in Hall C of the Gran Sasso Underground Laboratory since February 1995. This detector is called the “Counting Test Facility” (CTF). The main goal of the detector facility is the measurement of ultralow background levels in scintillators and the development of processes able to purify them at this level. The detector has been designed to have exceptional sensitivity using a variety of methods to identify backgrounds. With the CTF, records were achieved in the domain of low background large volume detectors. Limits of 3.5 ± 1.3 × 10−16 g/g and 4.4−1.2+1.5 × 10−16 g/g for the 238U and 232Th daughters, respectively, and 1.85 ± 0.13 ± 0.01 × 10−18 for the isotopic abundance of 14C relative to 12C were obtained. These results are very encouraging and point towards the feasibility of low energy, real time scintillation detectors for solar neutrinos, such as Borexino.

Published
1998

7. New results on solar neutrino fluxes from 192 days of Borexino data

Author

M. Chen, S. V. Sukhotin, O. Zaimidoroga, D. Vignaud, M. D. Skorokhvatov, Michael Wurm, A. Nelson, C. Carraro, A. Martemianov, A. V. Derbin, M. Balata, V. V. Kobychev, R. Eisenstein, D. Manuzio, Augusto Brigatti, A. Razeto, T. Goldbrunner, Andrew Sonnenschein, E. Litvinovich, Sandra Malvezzi, T. Hertrich, C. Arpesella, P. Risso, Q. Meindl, Frank Calaprice, B. Freudiger, Hardy Simgen, S. Vitale, Matthias Laubenstein, Till Kirsten, A. Di Credico, F. Dalnoki-Veress, J. Maneira, Marco Pallavicini, Lino Miramonti, Gunther Korschinek, T. A. Shutt, R. Fernholz, M. E. Monzani, J. Kiko, Paolo Lombardi, Danilo Giugni, G. Heusser, R. Tartaglia, R. S. Raghavan, Aldo Ianni, A. Pocar, Fausto Masetti, G. Manuzio, M. Obolensky, M. Goeger-Neff, H. de Kerret, Y. Suvorov, Andrea Ianni, R. von Hentig, D. Kryn, Sandra Zavatarelli, Cristiano Galbiati, D. Schimizzi, Gioacchino Ranucci, S. Parmeggiano, A. de Bari, T. Lewke, Livia Ludhova, W. Maneschg, A. M. Goretti, D. Franco, H.O. Back, M. Orsini, E. Meroni, M. M. Wojcik, R. Saldanha, F. von Feilitzsch, S. Manecki, G. Bellini, C. Grieb, K. McCarty, A. A. Sabelnikov, A. Sotnikov, F.X. Hartman, P. LaMarche, R. J. Ford, S. Gazzana, G. Di Pietro, Flavio Gatti, Jay Burton Benziger, Marco Giammarchi, G. Testera, D. Montanari, S. Bonetti, C. Lendvai, A. de Bellefon, I. Manno, G. Korga, K. Fomenko, Laura Cadonati, O. Smirnov, L. Papp, Lothar Oberauer, G. Zuzel, V. N. Muratova, Fausto Ortica, Elisa Resconi, Fausto Elisei, S. Hardy, G. Cecchet, S. Schönert, W Rau, E. Harding, Martin Deutsch, A. E. Chavarria, L. Perasso, D. Rountree, Ugo Mazzucato, I. N. Machulin, R. B. Vogelaar, H. Neder, A.V. Etenko, D. D'Angelo, C. Salvo, Daniel McKinsey, L. Niedermeier, Michael K.H. Leung, B. Caccianiga, V. Lagomarsino, Aldo Romani, Malcolm J. Joyce, Caren Hagner, M. Misiaszek, B. Loer, W. Hampel, Paolo Musico, T. von Hentig, AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), APC - Neutrinos, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-AstroParticule et Cosmologie (APC (UMR_7164)), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, Borexino, Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)-AstroParticule et Cosmologie (APC (UMR_7164)), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Galbiati, C., Arpesella, C., Back, H. O., Balata, M., Bellini, G., Benziger, J., Bonetti, S., Brigatti, A., Caccianiga, B., Cadonati, L., Calaprice, F., Carraro, C., Cecchet, G., Chavarria, A., Chen, M., Dalnoki-Veress, F., D'Angelo, D., de Bari, A., de Bellefon, A., de Kerret, H., Derbin, A., Deutsch, M., di Credico, A., di Pietro, G., Eisenstein, R., Elisei, F., Etenko, A., Fernholz, R., Fomenko, K., Ford, R., Franco, D., Freudiger, B., Gatti, F., Gazzana, S., Giammarchi, M., Giugni, D., Goeger-Neff, M., Goldbrunner, T., Goretti, A., Grieb, C., Hagner, C., Hampel, W., Harding, E., Hardy, S., Hartman, F. X., Hertrich, T., Heusser, G., Ianni, Aldo, Ianni, Andrea, Joyce, M., Kiko, J., Lonegren, Kirsten, Kobychev, V., Korga, G., Korschinek, G., Kryn, D., Lagomarsino, V., Lamarche, P., Laubenstein, M., Lendvai, C., Leung, M., Lewke, T., Litvinovich, E., Loer, B., Lombardi, P., Ludhova, L., Machulin, I., Malvezzi, S., Manecki, S., Maneira, J., Maneschg, W., Manno, I., Manuzio, D., Manuzio, G., Martemianova, A., Masetti, F., Mazzucato, U., Mccarty, K., Mckinsey, D., Meindl, Q., Meroni, E., Miramonti, L., Misiaszek, M., Montanari, D., Monzani, M. E., Muratova, V., Musico, P., Neder, H., Nelson, A., Niedermeier, L., Oberauer, L., Obolensky, M., Orsini, M., Ortica, F., Pallavicini, M., Papp, L., Parmeggiano, S., Perasso, L., Pocar, A., Raghavan, R. S., Ranucci, G., Rau, W., Razeto, A., Resconi, E., Risso, P., Romani, A., Rountree, D., Sabelnikov, A., Saldanha, R., Salvo, C., Schimizzi, D., Schoenert, S., Shutt, T., Simgen, H., Skorokhvatov, M., Smirnov, O., Sonnenschein, A., Sotnikov, A., Sukhotin, S., Suvorov, Y., Tartaglia, R., Testera, G., Vignaud, D., Vitale, S., Vogelaar, R. B., von Feilitzsch, F., von Hentig, R., von Hentig, T., Wojcik, M., Wurm, M., Zaimidoroga, O., Zavatarelli, S., Zuzel, G., Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), and Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)

Subjects
History, Particle physics, Physics::Instrumentation and Detectors, Solar neutrino, 01 natural sciences, Education, Nuclear physics, SCINTILLATOR, 0103 physical sciences, OSCILLATIONS, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Astrophysics::Solar and Stellar Astrophysics, 010306 general physics, Neutrino oscillation, DETECTOR, Borexino, Physics, 010308 nuclear & particles physics, Oscillation, Solar neutrino problem, Computer Science Applications, Neutrino detector, Measurements of neutrino speed, High Energy Physics::Experiment, Neutrino, MATTER
Abstract

International audience; We report the direct measurement of the 7Be solar neutrino signal rate performed with the Borexino detector at the Laboratori Nazionali del Gran Sasso. The interaction rate of the 0.862 MeV 7Be neutrinos is 49±3stat±4syst counts/(day*100 ton). The hypothesis of no oscillation for 7Be solar neutrinos is inconsistent with our measurement at the 4σ C.L. Our result is the first direct measurement of the survival probability for solar νe in the transition region between matter-enhanced and vacuum-driven oscillations. The measurement improves the experimental determination of the flux of 7Be, pp, and CNO solar νe, and the limit on the effective neutrino magnetic moment using solar neutrinos

Published
2008

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