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1. Comprehensive geoneutrino analysis with Borexino

Author

Agostini, M., Altenmüller, K., Bravo, D., Thurn, J., Unzhakov, E., Vishneva, A., Vivier, M., Vogelaar, R. B., von Feilitzsch, Franz, Wojcik, M., Wurm, M., Zaimidoroga, O., Zavatarelli, S., Caccianiga, B., Zuber, K., Zuzel, G., Borexino Collaboration, Calaprice, F., Caminata, A., Cappelli, L., Cavalcante, P., Cavanna, F., Chepurnov, A., Choi, K., D’Angelo, D., Appel, S., Davini, S., Derbin, A., Di Giacinto, A., Di Marcello, V., Ding, X. F., Di Ludovico, A., Di Noto, L., Drachnev, I., Fiorentini, G., Formozov, A., Atroshchenko, V., Franco, D., Gabriele, F., Galbiati, C., Gschwender, M., Ghiano, C., Giammarchi, M., Goretti, A., Gromov, M., Guffanti, D., Hagner, C., Bagdasarian, Z., Hungerford, E., Ianni, Aldo, Ianni, Andrea, Jany, A., Jeschke, D., Kumaran, Sindhujha, Kobychev, V., Korga, G., Lachenmaier, T., Lasserre, T., Basilico, D., Laubenstein, M., Litvinovich, E., Lombardi, P., Lomskaya, I., Ludhová, Livia, Lukyanchenko, G., Lukyanchenko, L., Machulin, I., Mantovani, F., Manuzio, G., Bellini, G., Marcocci, S., Maricic, J., Martyn, J., Meroni, E., Meyer, M., Miramonti, L., Misiaszek, M., Montuschi, M., Muratova, V., Neumair, B., Benziger, J., Nieslony, M., Oberauer, L., Onillon, A., Orekhov, V., Ortica, F., Pallavicini, M., Papp, L., Penek, Ömer, Pietrofaccia, L., Pilipenko, N., Bick, D., Pocar, A., Raikov, G., Ranalli, M. T., Ranucci, G., Razeto, A., Re, A., Redchuk, M., Ricci, B., Romani, A., Rossi, N., Bonfini, G., Rottenanger, S., Schönert, S., Semenov, D., Skorokhvatov, M., Smirnov, O., Sotnikov, A., Strati, V., Suvorov, Y., Tartaglia, R., Testera, G., 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)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Borexino, 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), Agostini, M., Altenmuller, K., Appel, S., Atroshchenko, V., Bagdasarian, Z., Basilico, D., Bellini, G., Benziger, J., Bick, D., Bonfini, G., Bravo, D., Caccianiga, B., Calaprice, F., Caminata, A., Cappelli, L., Cavalcante, P., Cavanna, F., Chepurnov, A., Choi, K., D'Angelo, D., Davini, S., Derbin, A., Di Giacinto, A., Di Marcello, V., Ding, X. F., Di Ludovico, A., Di Noto, L., Drachnev, I., Fiorentini, G., Formozov, A., Franco, D., Gabriele, F., Galbiati, C., Gschwender, M., Ghiano, C., Giammarchi, M., Goretti, A., Gromov, M., Guffanti, D., Hagner, C., Hungerford, E., Ianni, A., Jany, A., Jeschke, D., Kumaran, S., Kobychev, V., Korga, G., Lachenmaier, T., Lasserre, T., Laubenstein, M., Litvinovich, E., Lombardi, P., Lomskaya, I., Ludhova, L., Lukyanchenko, G., Lukyanchenko, L., Machulin, I., Mantovani, F., Manuzio, G., Marcocci, S., Maricic, J., Martyn, J., Meroni, E., Meyer, M., Miramonti, L., Misiaszek, M., Montuschi, M., Muratova, V., Neumair, B., Nieslony, M., Oberauer, L., Onillon, A., Orekhov, V., Ortica, F., Pallavicini, M., Papp, L., Penek, O., Pietrofaccia, L., Pilipenko, N., Pocar, A., Raikov, G., Ranalli, M. T., Ranucci, G., Razeto, A., Re, A., Redchuk, M., Ricci, B., Romani, A., Rossi, N., Rottenanger, S., Schonert, S., Semenov, D., Skorokhvatov, M., Smirnov, O., Sotnikov, A., Strati, V., Suvorov, Y., Tartaglia, R., Testera, G., Thurn, J., Unzhakov, E., Vishneva, A., Vivier, M., Vogelaar, R. B., Von Feilitzsch, F., Wojcik, M., Wurm, M., Zaimidoroga, O., Zavatarelli, S., Zuber, K., Zuzel, G., Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Agostini, M, Altenmuller, K, Appel, S, Atroshchenko, V, Bagdasarian, Z, Basilico, D, Bellini, G, Benziger, J, Bick, D, Bonfini, G, Bravo, D, Caccianiga, B, Calaprice, F, Caminata, A, Cappelli, L, Cavalcante, P, Cavanna, F, Chepurnov, A, Choi, K, D'Angelo, D, Davini, S, Derbin, A, Di Giacinto, A, Di Marcello, V, Ding, X, Di Ludovico, A, Di Noto, L, Drachnev, I, Fiorentini, G, Formozov, A, Franco, D, Gabriele, F, Galbiati, C, Gschwender, M, Ghiano, C, Giammarchi, M, Goretti, A, Gromov, M, Guffanti, D, Hagner, C, Hungerford, E, Ianni, A, Jany, A, Jeschke, D, Kumaran, S, Kobychev, V, Korga, G, Lachenmaier, T, Lasserre, T, Laubenstein, M, Litvinovich, E, Lombardi, P, Lomskaya, I, Ludhova, L, Lukyanchenko, G, Lukyanchenko, L, Machulin, I, Mantovani, F, Manuzio, G, Marcocci, S, Maricic, J, Martyn, J, Meroni, E, Meyer, M, Miramonti, L, Misiaszek, M, Montuschi, M, Muratova, V, Neumair, B, Nieslony, M, Oberauer, L, Onillon, A, Orekhov, V, Ortica, F, Pallavicini, M, Papp, L, Penek, O, Pietrofaccia, L, Pilipenko, N, Pocar, A, Raikov, G, Ranalli, M, Ranucci, G, Razeto, A, Re, A, Redchuk, M, Ricci, B, Romani, A, Rossi, N, Rottenanger, S, Schonert, S, Semenov, D, Skorokhvatov, M, Smirnov, O, Sotnikov, A, Strati, V, Suvorov, Y, Tartaglia, R, Testera, G, Thurn, J, Unzhakov, E, Vishneva, A, Vivier, M, Vogelaar, R, Von Feilitzsch, F, Wojcik, M, Wurm, M, Zaimidoroga, O, Zavatarelli, S, Zuber, K, Zuzel, G, Observatoire de Paris, and PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
data analysis method, Geoneutrino, FOS: Physical sciences, chemistry.chemical_element, 01 natural sciences, Mantle (geology), NO, thorium, High Energy Physics - Experiment, background [antineutrino], uranium, Physics - Geophysics, Nuclear physics, High Energy Physics - Experiment (hep-ex), statistical analysis, Lithosphere, 0103 physical sciences, antineutrino: nuclear reactor, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Particle Physics Experiments, ddc:530, 010306 general physics, geoneutrinos, liquid scintillators, low radioactivity, neutrino, detector, Borexino, [PHYS]Physics [physics], Physics, Radiogenic nuclide, 010308 nuclear & particles physics, Thorium, Crust, antineutrino: background, Mass ratio, [PHYS.PHYS.PHYS-GEN-PH]Physics [physics]/Physics [physics]/General Physics [physics.gen-ph], Geophysics (physics.geo-ph), Gran Sasso, ddc, nuclear reactor [antineutrino], geophysics [neutrino], chemistry, mass ratio, neutrino: geophysics, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], experimental results
Abstract

This paper presents a geoneutrino measurement using 3262.74 days of data taken with the Borexino detector at LNGS in Italy. By observing $52.6 ^{+9.4}_{-8.6} ({\rm stat}) ^{+2.7}_{-2.1}({\rm sys})$ geoneutrinos (68% interval) from $^{238}$U and $^{232}$Th, a signal of $47.0^{+8.4}_{-7.7}\,({\rm stat)}^{+2.4}_{-1.9}\,({\rm sys})$ TNU with $^{+18.3}_{-17.2}$% total precision was obtained. This result assumes the same Th/U mass ratio found in chondritic CI meteorites but compatible results were found when contributions from $^{238}$U and $^{232}$Th were fit as free parameters. Antineutrino background from reactors is fit unconstrained and found compatible with the expectations. The null-hypothesis of observing a signal from the mantle is excluded at a 99.0% C.L. when exploiting the knowledge of the local crust. Measured mantle signal of $21.2 ^{+9.6}_{-9.0} ({\rm stat})^{+1.1}_{-0.9} ({\rm sys})$ TNU corresponds to the production of a radiogenic heat of $24.6 ^{+11.1}_{-10.4}$ TW (68% interval) from $^{238}$U and $^{232}$Th in the mantle. Assuming 18% contribution of $^{40}$K in the mantle and $8.1^{+1.9}_{-1.4}$ TW of radiogenic heat of the lithosphere, the Borexino estimate of the total Earth radiogenic heat is $38.2 ^{+13.6}_{-12.7}$ TW, corresponding to a convective Urey ratio of 0.78$^{+0.41}_{-0.28}$. These values are compatible with different geological models, however there is a 2.4$\sigma$ tension with those which predict the lowest concentration of heat-producing elements. By fitting the data with a constraint on the reactor antineutrino background, the existence of a hypothetical georeactor at the center of the Earth having power greater than 2.4 TW at 95% C.L. is excluded. Particular attention is given to all analysis details, which should be of interest for the next generation geoneutrino measurements., Comment: 69 pages, 56 Figures (some composed of multiple files), 17 Tables, 135 References

Published
2020

2. Journal of Cosmology and Astroparticle Physics

Author

The Borexino Collaboration, Agostini, M., Altenm��ller, K., Appel, S., Atroshchenko, V., Bagdasarian, Z., Basilico, D., Bellini, G., Benziger, J., Bick, D., Bolognino, I., Bonfini, G., Bravo, D., Caccianiga, B., Calaprice, F., Caminata, A., Caprioli, S., Carlini, M., Cavalcante, P., Cavanna, F., Chepurnov, A., Choi, K., Collica, L., D'Angelo, D., Davini, S., Derbin, A., Ding, X. F., Di Ludovico, A., Di Noto, L., Drachnev, I., Fomenko, K., Formozov, A., Franco, D., Gabriele, F., Galbiati, C., Gschwender, M., Ghiano, C., Giammarchi, M., Goretti, A., Gromov, M., Guffanti, D., Hagner, C., Houdy, T., Hungerford, E., Ianni, Aldo, Ianni, Andrea, Jany, A., Jeschke, D., Kobychev, V., Korablev, D., Korga, G., Kudryavtsev, V. A., Kumaran, S., Lachenmaier, T., Laubenstein, M., Litvinovich, E., Lombardi, F., Lombardi, P., Ludhova, L., Lukyanchenko, G., Lukyanchenko, L., Machulin, I., Manuzio, G., Marcocci, S., Maricic, J., Martyn, J., Meighen-Berger, S., Meroni, E., Meyer, M., Miramonti, L., Misiaszek, M., Muratova, V., Neumair, B., Nieslony, M., Oberauer, L., Opitz, B., Orekhov, V., Ortica, F., Pallavicini, M., Papp, L., Penek, ��., Pietrofaccia, L., Pilipenko, N., Pocar, A., Porcelli, A., Raikov, G., Ranucci, G., Razeto, A., Re, A., Redchuk, M., Romani, A., Rossi, N., Rottenanger, S., Sch��nert, S., Semenov, D., Skorokhvatov, M., Smirnov, O., Sotnikov, A., Stokes, L. F. F., Suvorov, Y., Tartaglia, R., Testera, G., Thurn, J., Toropova, M., Unzhakov, E., Vishneva, A., Vogelaar, R. B., von Feilitzsch, F., Weinz, S., Wojcik, M., Wurm, M., Yokley, Z., Zaimidoroga, O., Zavatarelli, S., Zuber, K., Zuzel, G., Agostini, M., Altenmüller, K., Appel, S., Atroshchenko, V., Bagdasarian, Z., Basilico, D., Bellini, G., Benziger, J., Bick, D., Bolognino, I., Bonfini, G., Bravo, D., Caccianiga, B., Calaprice, F., Caminata, A., Caprioli, S., Carlini, M., Cavalcante, P., Cavanna, F., Chepurnov, A., Choi, K., Collica, L., D'Angelo, D., Davini, S., Derbin, A., Ding, X. F., Di Ludovico, A., Di Noto, L., Drachnev, I., Fomenko, K., Formozov, A., Franco, D., Gabriele, F., Galbiati, C., Gschwender, M., Ghiano, C., Giammarchi, M., Goretti, A., Gromov, M., Guffanti, D., Hagner, C., Houdy, T., Hungerford, E., Ianni, Aldo, Ianni, Andrea, Jany, A., Jeschke, D., Kobychev, V., Korablev, D., Korga, G., Kudryavtsev, V. A., Kumaran, S., Lachenmaier, T., Laubenstein, M., Litvinovich, E., Lombardi, F., Lombardi, P., Ludhova, L., Lukyanchenko, G., Lukyanchenko, L., Machulin, I., Manuzio, G., Marcocci, S., Maricic, J., Martyn, J., Meighen-Berger, S., Meroni, E., Meyer, M., Miramonti, L., Misiaszek, M., Muratova, V., Neumair, B., Nieslony, M., Oberauer, L., Opitz, B., Orekhov, V., Ortica, F., Pallavicini, M., Papp, L., Penek, à ., Pietrofaccia, L., Pilipenko, N., Pocar, A., Porcelli, A., Raikov, G., Ranucci, G., Razeto, A., Re, A., Redchuk, M., Romani, A., Rossi, N., Rottenanger, S., Schönert, S., Semenov, D., Skorokhvatov, M., Smirnov, O., Sotnikov, A., Stokes, L. F. F., Suvorov, Y., Tartaglia, R., Testera, G., Thurn, J., Toropova, M., Unzhakov, E., Vishneva, A., Vogelaar, R. B., Von Feilitzsch, F., Weinz, S., Wojcik, M., Wurm, M., Yokley, Z., Zaimidoroga, O., Zavatarelli, S., Zuber, K., Zuzel, G., Agostini, M, Altenmuller, K, Appel, S, Atroshchenko, V, Bagdasarian, Z, Basilico, D, Bellini, G, Benziger, J, Bick, D, Bolognino, I, Bonfini, G, Bravo, D, Caccianiga, B, Calaprice, F, Caminata, A, Caprioli, S, Carlini, M, Cavalcante, P, Cavanna, F, Chepurnov, A, Choi, K, Collica, L, D'Angelo, D, Davini, S, Derbin, A, Ding, X, Di Ludovico, A, Di Noto, L, Drachnev, I, Fomenko, K, Formozov, A, Franco, D, Gabriele, F, Galbiati, C, Gschwender, M, Ghiano, C, Giammarchi, M, Goretti, A, Gromov, M, Guffanti, D, Hagner, C, Houdy, T, Hungerford, E, Ianni, A, Jany, A, Jeschke, D, Kobychev, V, Korablev, D, Korga, G, Kudryavtsev, V, Kumaran, S, Lachenmaier, T, Laubenstein, M, Litvinovich, E, Lombardi, F, Lombardi, P, Ludhova, L, Lukyanchenko, G, Lukyanchenko, L, Machulin, I, Manuzio, G, Marcocci, S, Maricic, J, Martyn, J, Meighen-Berger, S, Meroni, E, Meyer, M, Miramonti, L, Misiaszek, M, Muratova, V, Neumair, B, Nieslony, M, Oberauer, L, Opitz, B, Orekhov, V, Ortica, F, Pallavicini, M, Papp, L, Penek, O, Pietrofaccia, L, Pilipenko, N, Pocar, A, Porcelli, A, Raikov, G, Ranucci, G, Razeto, A, Re, A, Redchuk, M, Romani, A, Rossi, N, Rottenanger, S, Schonert, S, Semenov, D, Skorokhvatov, M, Smirnov, O, Sotnikov, A, Stokes, L, Suvorov, Y, Tartaglia, R, Testera, G, Thurn, J, Toropova, M, Unzhakov, E, Vishneva, A, Vogelaar, R, Von Feilitzsch, F, Weinz, S, Wojcik, M, Wurm, M, Yokley, Z, Zaimidoroga, O, Zavatarelli, S, Zuber, K, Zuzel, G, Physics, AstroParticule et Cosmologie (APC (UMR_7164)), 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), Borexino, Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-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)-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)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)

Subjects
atmosphere: model, Physics - Instrumentation and Detectors, neutrino: solar, atmosphere: temperature, Cosmic rays detector, FOS: Physical sciences, flux: time dependence, temperature: fluctuation, High Energy Physics - Experiment, Neutrino detector, High Energy Physics - Experiment (hep-ex), neutrino experiments, Neutrino experiment, muon: flux: measured, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Neutrino detectors, Cosmic rays detectors, Neutrino experiments, Astronomy and Astrophysics, Instrumentation and Detectors (physics.ins-det), muon: production, Gran Sasso, n: associated production, cosmic radiation: primary, muon: atmosphere, modulation, correlation, muon: cosmic radiation, Borexino, cosmic rays detectors, High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, experimental results, neutrino detectors
Abstract

We have measured the flux of cosmic muons in the Laboratori Nazionali del Gran Sasso at 3800\,m\,w.e. to be $(3.432 \pm 0.003)\cdot 10^{-4}\,\mathrm{{m^{-2}s^{-1}}}$ based on ten years of Borexino data acquired between May 2007 and May 2017. A seasonal modulation with a period of $(366.3 \pm 0.6)\,\mathrm{d}$ and a relative amplitude of $(1.36 \pm0.04)\%$ is observed. The phase is measured to be $(181.7 \pm 0.4)\,\mathrm{d}$, corresponding to a maximum at the 1$^\mathrm{st}$ of July. Using data inferred from global atmospheric models, we show the muon flux to be positively correlated with the atmospheric temperature and measure the effective temperature coefficient $\alpha_\mathrm{T} = 0.90 \pm 0.02$. The origin of cosmic muons from pion and kaon decays in the atmosphere allows to interpret the effective temperature coefficient as an indirect measurement of the atmospheric kaon-to-pion production ratio $r_{\mathrm{K}/\pi} = 0.11^{+0.11}_{-0.07}$ for primary energies above $18\,\mathrm{TeV}$. We find evidence for a long-term modulation of the muon flux with a period of $\sim 3000\,\mathrm{d}$ and a maximum in June 2012 that is not present in the atmospheric temperature data. A possible correlation between this modulation and the solar activity is investigated. The cosmogenic neutron production rate is found to show a seasonal modulation in phase with the cosmic muon flux but with an increased amplitude of $(2.6 \pm 0.4)\%$., Comment: 30 pages, 16 figures, proofreading for publication in JCAP

Published
2018

3. Improved measurement of $^8$B solar neutrinos with $1.5 kt·y$ of Borexino exposure

Author

Agostini, M., Altenmüller, K., Appel, S., Atroshchenko, V., Bagdasarian, Z., Basilico, D., Bellini, G., Benziger, J., Bick, D., Bravo, D., Caccianiga, B., Calaprice, F., Caminata, A., Cavalcante, P., Chepurnov, A., D’Angelo, D., Davini, S., Derbin, A., Di Giacinto, A., Di Marcello, V., Ding, X. F., Di Ludovico, A., Di Noto, L., Drachnev, I., Formozov, A., Franco, D., Galbiati, C., Gschwender, M., Ghiano, C., Giammarchi, M., Goretti, A., Gromov, M., Guffanti, D., Hagner, C., Houdy, T., Hungerford, E., Ianni, Aldo, Ianni, Andrea, Jany, A., Jeschke, D., Kobychev, V., Korga, G., Kumaran, Sindhujha, Lachenmaier, T., Laubenstein, M., Litvinovich, E., Lombardi, P., Lomskaya, I., Ludhová, Livia, Lukyanchenko, G., Lukyanchenko, L., Machulin, I., Marcocci, S., Martyn, J., Meroni, E., Meyer, M., Miramonti, L., Misiaszek, M., Muratova, V., Neumair, B., Nieslony, M., Nugmanov, R., Oberauer, L., Orekhov, V., Ortica, F., Pallavicini, M., Papp, L., Penek, Ömer, Pietrofaccia, L., Pilipenko, N., Pocar, A., Raikov, G., Ranalli, M. T., Ranucci, G., Razeto, A., Re, A., Redchuk, M., Romani, A., Rossi, N., Rottenanger, S., Schönert, S., Semenov, D., Skorokhvatov, M., Smirnov, O., Sotnikov, A., Suvorov, Y., Tartaglia, R., Testera, G., Thurn, J., Unzhakov, E., Vishneva, A., Vogelaar, R. B., Von Feilitzsch, Franz, Wojcik, M., Wurm, M., Zavatarelli, S., Zuber, K., and Zuzel, G.

Subjects
model: solar, neutrino: solar, scintillation counter: liquid, neutrino: flux, solar [model], elastic scattering [neutrino electron], ddc:530, neutrino: interaction, MSW effect, cosmic radiation: energy spectrum, liquid [scintillation counter], interaction [neutrino], scintillation counter: target, flavor [neutrino], flux [neutrino], neutrino electron: elastic scattering, Gran Sasso, semileptonic decay [boron], target [scintillation counter], neutrino: flavor, solar [neutrino], Borexino, energy spectrum [cosmic radiation], boron: semileptonic decay, experimental results
Abstract

Physical review / D 101(6), 062001 (2020). doi:10.1103/PhysRevD.101.062001, Published by The American Institute of Physics, Woodbury, NY

Published
2020
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4. First Simultaneous Precision Spectroscopy of $pp$, $^7$Be, and $pep$ Solar Neutrinos with Borexino Phase-II

Author

Agostini, M., Altenmüller, K., Caccianiga, B., Weinz, S., Wojcik, M., Wurm, M., Zaimidoroga, O., Zavatarelli, S., Zuber, K., Zuzel, G., Borexino Collaboration, Calaprice, F., Caminata, A., Cappelli, L., Caprioli, S., Carlini, M., Cavalcante, P., Cavanna, F., Chepurnov, A., Choi, K., Appel, S., Collica, L., D’Angelo, D., Davini, S., Derbin, A., Ding, X. F., Di Ludovico, A., Di Noto, L., Drachnev, I., Fomenko, K., Formozov, A., Atroshchenko, V., Franco, D., Gabriele, F., Galbiati, C., Gschwender, M., Ghiano, C., Giammarchi, M., Goretti, A., Gromov, M., Guffanti, D., Houdy, T., Bagdasarian, Z., Hungerford, E., Ianni, Aldo, Ianni, Andrea, Jany, A., Jeschke, D., Kumaran, Sindhujha, Kobychev, V., Korga, G., Lachenmaier, T., Laubenstein, M., Basilico, D., Litvinovich, E., Lombardi, P., Ludhová, Livia, Lukyanchenko, G., Lukyanchenko, L., Machulin, I., Manuzio, G., Marcocci, S., Maricic, J., Martyn, J., Bellini, G., Meroni, E., Meyer, M., Miramonti, L., Misiaszek, M., Muratova, V., Neumair, B., Nieslony, M., Oberauer, L., Orekhov, V., Ortica, F., Benziger, J., Pallavicini, M., Papp, L., Penek, Ömer, Pietrofaccia, L., Pilipenko, N., Pocar, A., Porcelli, A., Raikov, G., Ranucci, G., Razeto, A., Bonfini, G., Re, A., Redchuk, M., Romani, A., Rossi, N., Rottenanger, S., Schönert, S., Semenov, D., Skorokhvatov, M., Smirnov, O., Sotnikov, A., Bravo, D., Stokes, L. F. F., Suvorov, Y., Tartaglia, R., Testera, G., Thurn, J., Unzhakov, E., Villante, F., Vishneva, A., Vogelaar, R. B., and von Feilitzsch, Franz

Subjects
data analysis method, oscillation [neutrino], flux [neutrino], 4/3, Gran Sasso, statistical analysis, fusion [p p], solar [model], elastic scattering [neutrino electron], ddc:530, Borexino, solar [neutrino], scintillation counter, MSW effect, experimental results
Published
2019

5. Solar Neutrino Measurements

Author

Pocar, A., Agostini, M., Altenmüller, K., Appel, S., Atroshchenko, V., Bagdasarian, Z., Basilico, D., Bellini, G., Benziger, J., Bonfini, G., Bravo, D., Caccianiga, B., Calaprice, F., Caminata, A., Cappelli, L., Caprioli, S., Carlini, M., Cavalcante, P., Cavanna, F., Chepurnov, A., Choi, K., Collica, L., D Angelo, D., Davini, S., Derbin, A., Ding, X. F., Di Ludovico, A., Di Noto, L., Drachnev, I., Fomenko, K., Formozov, A., Franco, D., Gabriele, F., Galbiati, C., Gschwender, M., Ghiano, C., Giammarchi, M., Goretti, A., Gromov, M., Guffanti, D., Houdy, T., Hungerford, E., Ianni, Aldo, Ianni, Andrea, Jany, A., Jeschke, D., Kumaran, S., Kobychev, V., Korga, G., Lachenmaier, T., Laubenstein, M., Litvinovich, E., Lombardi, P., Ludhova, L., Lukyanchenko, G., Lukyanchenko, L., Machulin, I., Manuzio, G., Marcocci, S., Maricic, J., Martyn, J., Meroni, E., Meyer, M., Miramonti, L., Misiaszek, M., Muratova, V., Neumair, B., Nieslony, M., Oberauer, L., Orekhov, V., Ortica, F., Pallavicini, M., Papp, L., Penek, Ö, Pietrofaccia, L., Pilipenko, N., Porcelli, A., Raikov, G., Ranucci, G., Razeto, A., Re, A., Redchuk, M., Romani, A., Rossi, N., Rottenanger, S., Schönert, S., Semenov, D., Skorokhvatov, M., Smirnov, O., Albert Sotnikov, Stokes, L. F. F., Suvorov, Y., Tartaglia, R., Testera, G., Thurn, J., Unzhakov, E., Vishneva, A., Vogelaar, R. B., Feilitzsch, F., Weinz, S., Wojcik, M., Wurm, M., Zaimidoroga, O., Zavatarelli, S., Zuber, K., Zuzel, G., 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)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), BOREXINO, Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), 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, and PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)

Subjects
fusion, experimental methods, neutrino: solar, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, detector: mass, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), double-beta decay: (0neutrino), [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Astrophysics::Solar and Stellar Astrophysics, neutrino: mass, Nuclear Experiment (nucl-ex), Nuclear Experiment, scintillation counter, neutrino: interaction, Solar and Stellar Astrophysics (astro-ph.SR), Gran Sasso, Astrophysics - Solar and Stellar Astrophysics, neutrino: flavor, Physics::Space Physics, Borexino, High Energy Physics::Experiment, neutrino: oscillation, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], experimental results
Abstract

We present the most recent results from the two currently running solar neutrino experiments, Borexino at the Gran Sasso laboratory in Italy and SuperK at Kamioka mine in Japan. SuperK has released the most precise yet measurement of the 8B solar neutrino interaction rate, with a precision better than 2\%, consistent with a constant solar neutrino emission over more than a decade. Borexino has released refined measurements of all neutrinos produced in the pp fusion chain. For the first time, one single detector has measured the entire range of solar neutrinos at once. These new data weakly favor a high-metallicity Sun. Prospects for measuring CNO solar neutrinos with Borexino are discussed, and a brief outlook on the field provided., 10 pages, 9 figures, "XXXVIII International Symposium on Physics in Collision, Bogot\'a, Colombia, 11-15 september 2018". arXiv admin note: substantial text overlap with arXiv:1810.12967

Published
2018

6. Search for low-energy neutrinos from astrophysical sources with Borexino

Author

V. Atroshchenko, Alessandra Re, R. Tartaglia, D. Jeschke, E. V. Hungerford, Lothar Oberauer, Ö. Penek, J. Thurn, G. Bonfini, Frank Calaprice, Matteo Agostini, M. T. Ranalli, A. Sotnikov, Matthias Laubenstein, S. Appel, G. Lukyanchenko, G. Testera, S. Marcocci, Andrey Formozov, S. Kumaran, L. Lukyanchenko, K. Choi, Y. Suvorov, Livia Ludhova, A. M. Goretti, A. S. Chepurnov, An. Ianni, F. Cavanna, B. Caccianiga, G. Zuzel, F. von Feilitzsch, M. Gromov, R. B. Vogelaar, E. Meroni, I. N. Machulin, Cristiano Galbiati, D. A. Semenov, A. V. Derbin, V. Orekhov, G. Bellini, D. D'Angelo, L. Papp, M. Redchuk, A. Jany, I. Lomskaya, V. Di Marcello, O. Zaimidoroga, N. Rossi, I. S. Drachnev, Tobias Lachenmaier, J. Martyn, Marco Giammarchi, E. Litvinovich, V. N. Muratova, V. V. Kobychev, M. Gschwender, Fausto Ortica, A. Vishneva, M. D. Skorokhvatov, Michael Wurm, D. Guffanti, J. Maricic, Xuefeng Ding, Lino Miramonti, D. Basilico, A. Di Ludovico, C. Ghiano, Kai Zuber, Caren Hagner, G. Korga, G. Manuzio, B. Neumair, M. Meyer, L. Pietrofaccia, D. Bick, Sandra Zavatarelli, A. Di Giacinto, N. Pilipenko, A. Razeto, P. Cavalcante, D. Bravo, D. Franco, M. Misiaszek, Paolo Lombardi, Gioacchino Ranucci, A. Pocar, S. Rottenanger, S. Davini, O. Smirnov, S. Schönert, E. V. Unzhakov, Marcin Wójcik, K. Altenmüller, M. Nieslony, A. Caminata, Marco Pallavicini, F. Gabriele, Barbara Ricci, G. Raikov, Z. Bagdasarian, L. Cappelli, Jay Burton Benziger, Aldo Romani, L. Di Noto, AstroParticule et Cosmologie (APC (UMR_7164)), Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Borexino, 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), Agostini, M, Altenmuller, K, Appel, S, Atroshchenko, V, Bagdasarian, Z, Basilico, D, Bellini, G, Benziger, J, Bick, D, Bonfini, G, Bravo, D, Caccianiga, B, Calaprice, F, Caminata, A, Cappelli, L, Cavalcante, P, Cavanna, F, Chepurnov, A, Choi, K, D'Angelo, D, Davini, S, Derbin, A, Di Giacinto, A, Di Marcello, V, Ding, X, Di Ludovico, A, Di Noto, L, Drachnev, I, Formozov, A, Franco, D, Gabriele, F, Galbiati, C, Gschwender, M, Ghiano, C, Giammarchi, M, Goretti, A, Gromov, M, Guffanti, D, Hagner, C, Hungerford, E, Ianni, A, Jany, A, Jeschke, D, Kumaran, S, Kobychev, V, Korga, G, Lachenmaier, T, Laubenstein, M, Litvinovich, E, Lombardi, P, Lomskaya, I, Ludhova, L, Lukyanchenko, G, Lukyanchenko, L, Machulin, I, Manuzio, G, Marcocci, S, Maricic, J, Martyn, J, Meroni, E, Meyer, M, Miramonti, L, Misiaszek, M, Muratova, V, Neumair, B, Nieslony, M, Oberauer, L, Orekhov, V, Ortica, F, Pallavicini, M, Papp, L, Penek, O, Pietrofaccia, L, Pilipenko, N, Pocar, A, Raikov, G, Ranalli, M, Ranucci, G, Razeto, A, Re, A, Redchuk, M, Ricci, B, Romani, A, Rossi, N, Rottenanger, S, Schonert, S, Semenov, D, Skorokhvatov, M, Smirnov, O, Sotnikov, A, Suvorov, Y, Tartaglia, R, Testera, G, Thurn, J, Unzhakov, E, Vishneva, A, Vogelaar, R, von Feilitzsch, F, Wojcik, M, Wurm, M, Zaimidoroga, O, Zavatarelli, S, Zuber, K, Zuzel, G, 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)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)

Subjects
antineutrinos, Physics - Instrumentation and Detectors, solar flares, magnetic field: high, neutrino: solar, Physics::Instrumentation and Detectors, Solar neutrino, scintillation counter: liquid, elastic scattering, antineutrino/e: particle identification, 01 natural sciences, 7. Clean energy, neutrino: flux, law.invention, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), law, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], neutrino: supernova, 26.65.+t, 010303 astronomy & astrophysics, Borexino, Elastic scattering, Physics, Solar flare, Supernova Relic Neutrinos, neutrino: energy spectrum, S067EB8, neutrinos, Instrumentation and Detectors (physics.ins-det), neutrino: magnetic moment, Diffuse Supernova Neutrino Background, 3. Good health, Supernova, Homestake, ddc:540, neutrino: flavor, Antineutrino, Neutrino, 97.60.Bw, Homestake experiment, Flare, antineutrino/e: flux, Antineutrinos, 13.15.+G, 26.65.+T, 29.40.Mc, Diffuse supernova neutrino background, Neutrinos, Solar flares, Supernova relic neutrinos, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Supernova relic neutrino, supernova relic neutrinos, NO, Nuclear physics, 13.15.+g, PE2_2, 0103 physical sciences, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], diffuse supernova neutrino background, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Astronomy and Astrophysics, neutrino: particle source, Gran Sasso, Solar Flares, 13. Climate action, spectral, High Energy Physics::Experiment, experimental results
Abstract

We report on searches for neutrinos and antineutrinos from astrophysical sources performed with the Borexino detector at the Laboratori Nazionali del Gran Sasso in Italy. Electron antineutrinos ($\bar{\nu}_e$) are detected in an organic liquid scintillator through the inverse $\beta$-decay reaction. In the present work we set model-independent upper limits in the energy range 1.8-16.8 MeV on neutrino fluxes from unknown sources that improve our previous results, on average, by a factor 2.5. Using the same data set, we first obtain experimental constraints on the diffuse supernova $\bar{\nu}_e$ fluxes in the previously unexplored region below 8 MeV. A search for $\bar{\nu}_e$ in the solar neutrino flux is also presented: the presence of $\bar{\nu}_e$ would be a manifestation of a non-zero anomalous magnetic moment of the neutrino, making possible its conversion to antineutrinos in the strong magnetic field of the Sun. We obtain a limit for a solar $\bar{\nu}_e$ flux of 384 cm$^{-2}$s$^{-1}$ (90% C.L.), assuming an undistorted solar $^{8}$B neutrinos energy spectrum, that corresponds to a transition probability $p_{ \nu_e \rightarrow \bar\nu_{e}}$ 1.8 MeV. At lower energies, by investigating the spectral shape of elastic scattering events, we obtain a new limit on solar $^{7}$Be-$\nu_e$ conversion into $\bar{\nu}_e$ of $p_{ \nu_e \rightarrow \bar \nu_{e}}, Comment: 18 pages, 8 figures, 4 tables, 73 references

Published
2019

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