Search for low-energy neutrinos from astrophysical sources with Borexino
Abstract
Here 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 ($$\bar{ν}_e$$) are detected in an organic liquid scintillator through the inverse β-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 $$\bar{ν}_e$$ fluxes in the previously unexplored region below 8 MeV. A search for $$\bar{ν}_e$$ in the solar neutrino flux is also presented: the presence of $$\bar{ν}_e$$ 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 $$\bar{ν}_e$$ flux of 384 cm-2s-1 (90% C.L.), assuming an undistorted solar 8B neutrinos energy spectrum, that corresponds to a transition probability $$p_{ν_{e}→\bar{ν}_e}$$< 7.2×10-5 (90% C.L.) for $$E_{\bar{ν}_e}$$ > 1.8 MeV. At lower energies, by investigating the spectral shape of elastic scattering events, we obtain a new limit on solar 7Be-νe conversion into $$\bar{ν}_e$$ of $$p_{ν_{e}→\bar{ν}_e}$$< 0.14 (90% C.L.) at 0.862 keV. Last, we investigate solar flares as possible neutrino sources and obtain the strongest up-to-date limits on the fluence of neutrinos of all flavor neutrino below 3-7 ,MeV. Assuming the neutrino flux to be proportional to the flare's intensity, we exclude an intense solar flare as the cause of the observed excess of events in run 117 of the Cl-Ar Homestake experiment.
- Authors:
-
more »
- Virginia Polytechnic Institute and State University (Virginia Tech), Blacksburg, VA (United States). Borexino Collaboration. et al.
- Publication Date:
- Research Org.:
- Princeton Univ., NJ (United States); Virginia Polytechnic Institute and State University (Virginia Tech), Blacksburg, VA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP); Istituto Nazionale di Fisica Nucleare (INFN); National Science Foundation (NSF); German Research Foundation (DFG)
- Contributing Org.:
- Borexino Collaboration
- OSTI Identifier:
- 1598876
- Grant/Contract Number:
- SC0010504
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Astroparticle Physics
- Additional Journal Information:
- Journal Volume: 125; Journal ID: ISSN 0927-6505
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 79 ASTRONOMY AND ASTROPHYSICS; antineutrinos; neutrinos; diffuse supernova neutrino background; supernova relic neutrinos; solar flares
Citation Formats
Agostini, M., Altenmüller, 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., 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, Aldo, Ianni, Andrea, 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, Ö., 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., 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, F., Wojcik, M., Wurm, M., Zaimidoroga, O., Zavatarelli, S., Zuber, K., and Zuzel, G. Search for low-energy neutrinos from astrophysical sources with Borexino. United States: N. p., 2020.
Web. doi:10.1016/j.astropartphys.2020.102509.
Agostini, M., Altenmüller, 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., 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, Aldo, Ianni, Andrea, 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, Ö., 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., 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, F., Wojcik, M., Wurm, M., Zaimidoroga, O., Zavatarelli, S., Zuber, K., & Zuzel, G. Search for low-energy neutrinos from astrophysical sources with Borexino. United States. https://doi.org/10.1016/j.astropartphys.2020.102509
Agostini, M., Altenmüller, 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., 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, Aldo, Ianni, Andrea, 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, Ö., 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., 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, F., Wojcik, M., Wurm, M., Zaimidoroga, O., Zavatarelli, S., Zuber, K., and Zuzel, G. Tue .
"Search for low-energy neutrinos from astrophysical sources with Borexino". United States. https://doi.org/10.1016/j.astropartphys.2020.102509. https://www.osti.gov/servlets/purl/1598876.
@article{osti_1598876,
title = {Search for low-energy neutrinos from astrophysical sources with Borexino},
author = {Agostini, M. and Altenmüller, K. and Appel, S. and Atroshchenko, V. and Bagdasarian, Z. and Basilico, D. and Bellini, G. and Benziger, J. and Bick, D. and Bonfini, G. and Bravo, D. and Caccianiga, B. and Calaprice, F. and Caminata, A. and Cappelli, L. and Cavalcante, P. and Cavanna, F. and Chepurnov, A. and Choi, K. and D’Angelo, D. and Davini, S. and Derbin, A. and Di Giacinto, A. and Di Marcello, V. and Ding, X. F. and Di Ludovico, A. and Di Noto, L. and Drachnev, I. and Formozov, A. and Franco, D. and Gabriele, F. and Galbiati, C. and Gschwender, M. and Ghiano, C. and Giammarchi, M. and Goretti, A. and Gromov, M. and Guffanti, D. and Hagner, C. and Hungerford, E. and Ianni, Aldo and Ianni, Andrea and Jany, A. and Jeschke, D. and Kumaran, S. and Kobychev, V. and Korga, G. and Lachenmaier, T. and Laubenstein, M. and Litvinovich, E. and Lombardi, P. and Lomskaya, I. and Ludhova, L. and Lukyanchenko, G. and Lukyanchenko, L. and Machulin, I. and Manuzio, G. and Marcocci, S. and Maricic, J. and Martyn, J. and Meroni, E. and Meyer, M. and Miramonti, L. and Misiaszek, M. and Muratova, V. and Neumair, B. and Nieslony, M. and Oberauer, L. and Orekhov, V. and Ortica, F. and Pallavicini, M. and Papp, L. and Penek, Ö. and Pietrofaccia, L. and Pilipenko, N. and Pocar, A. and Raikov, G. and Ranalli, M. T. and Ranucci, G. and Razeto, A. and Re, A. and Redchuk, M. and Ricci, B. and Romani, A. and Rossi, N. and Rottenanger, S. and Schönert, S. and Semenov, D. and Skorokhvatov, M. and Smirnov, O. and Sotnikov, A. and Suvorov, Y. and Tartaglia, R. and Testera, G. and Thurn, J. and Unzhakov, E. and Vishneva, A. and Vogelaar, R. B. and von Feilitzsch, F. and Wojcik, M. and Wurm, M. and Zaimidoroga, O. and Zavatarelli, S. and Zuber, K. and Zuzel, G.},
abstractNote = {Here 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 ($\bar{ν}_e$) are detected in an organic liquid scintillator through the inverse β-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 $\bar{ν}_e$ fluxes in the previously unexplored region below 8 MeV. A search for $\bar{ν}_e$ in the solar neutrino flux is also presented: the presence of $\bar{ν}_e$ 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 $\bar{ν}_e$ flux of 384 cm-2s-1 (90% C.L.), assuming an undistorted solar 8B neutrinos energy spectrum, that corresponds to a transition probability $p_{ν_{e}→\bar{ν}_e}$< 7.2×10-5 (90% C.L.) for $E_{\bar{ν}_e}$ > 1.8 MeV. At lower energies, by investigating the spectral shape of elastic scattering events, we obtain a new limit on solar 7Be-νe conversion into $\bar{ν}_e$ of $p_{ν_{e}→\bar{ν}_e}$< 0.14 (90% C.L.) at 0.862 keV. Last, we investigate solar flares as possible neutrino sources and obtain the strongest up-to-date limits on the fluence of neutrinos of all flavor neutrino below 3-7 ,MeV. Assuming the neutrino flux to be proportional to the flare's intensity, we exclude an intense solar flare as the cause of the observed excess of events in run 117 of the Cl-Ar Homestake experiment.},
doi = {10.1016/j.astropartphys.2020.102509},
journal = {Astroparticle Physics},
number = ,
volume = 125,
place = {United States},
year = {Tue Sep 01 00:00:00 EDT 2020},
month = {Tue Sep 01 00:00:00 EDT 2020}
}
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