First Directional Measurement of Sub-MeV Solar Neutrinos with Borexino.

Autor: Agostini M; Physik-Department, Technische Universität München, 85748 Garching, Germany.; Department of Physics and Astronomy, University College London, London, WC1E 6BT, United Kingdom., Altenmüller K; Physik-Department, Technische Universität München, 85748 Garching, Germany., Appel S; Physik-Department, Technische Universität München, 85748 Garching, Germany., Atroshchenko V; National Research Centre Kurchatov Institute, 123182 Moscow, Russia., Bagdasarian Z; Institut für Kernphysik, Forschungszentrum Jülich, 52425 Jülich, Germany., Basilico D; Dipartimento di Fisica, Università degli Studi e INFN, 20133 Milano, Italy., Bellini G; Dipartimento di Fisica, Università degli Studi e INFN, 20133 Milano, Italy., Benziger J; Chemical Engineering Department, Princeton University, Princeton, New Jersey 08544, USA., Biondi R; INFN Laboratori Nazionali del Gran Sasso, 67010 Assergi (AQ), Italy., Bravo D; Dipartimento di Fisica, Università degli Studi e INFN, 20133 Milano, Italy., Caccianiga B; Dipartimento di Fisica, Università degli Studi e INFN, 20133 Milano, Italy., Calaprice F; Physics Department, Princeton University, Princeton, New Jersey 08544, USA., Caminata A; Dipartimento di Fisica, Università degli Studi e INFN, 16146 Genova, Italy., Cavalcante P; Physics Department, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA., Chepurnov A; Lomonosov Moscow State University Skobeltsyn Institute of Nuclear Physics, 119234 Moscow, Russia., D'Angelo D; Dipartimento di Fisica, Università degli Studi e INFN, 20133 Milano, Italy., Davini S; Dipartimento di Fisica, Università degli Studi e INFN, 16146 Genova, Italy., Derbin A; St. Petersburg Nuclear Physics Institute NRC Kurchatov Institute, 188350 Gatchina, Russia., Di Giacinto A; INFN Laboratori Nazionali del Gran Sasso, 67010 Assergi (AQ), Italy., Di Marcello V; INFN Laboratori Nazionali del Gran Sasso, 67010 Assergi (AQ), Italy., Ding XF; Physics Department, Princeton University, Princeton, New Jersey 08544, USA., Di Ludovico A; Physics Department, Princeton University, Princeton, New Jersey 08544, USA., Di Noto L; Dipartimento di Fisica, Università degli Studi e INFN, 16146 Genova, Italy., Drachnev I; St. Petersburg Nuclear Physics Institute NRC Kurchatov Institute, 188350 Gatchina, Russia., Formozov A; Joint Institute for Nuclear Research, 141980 Dubna, Russia.; Dipartimento di Fisica, Università degli Studi e INFN, 20133 Milano, Italy., Franco D; APC, Université de Paris, CNRS, Astroparticule et Cosmologie, Paris F-75013, France., Galbiati C; Physics Department, Princeton University, Princeton, New Jersey 08544, USA.; Gran Sasso Science Institute, 67100 L'Aquila, Italy., Ghiano C; INFN Laboratori Nazionali del Gran Sasso, 67010 Assergi (AQ), Italy., Giammarchi M; Dipartimento di Fisica, Università degli Studi e INFN, 20133 Milano, Italy., Goretti A; M. Smoluchowski Institute of Physics, Jagiellonian University, 30348 Krakow, Poland.; Physics Department, Princeton University, Princeton, New Jersey 08544, USA., Göttel AS; Institut für Kernphysik, Forschungszentrum Jülich, 52425 Jülich, Germany.; III. Physikalisches Institut B, RWTH Aachen University, 52062 Aachen, Germany., Gromov M; Joint Institute for Nuclear Research, 141980 Dubna, Russia.; Lomonosov Moscow State University Skobeltsyn Institute of Nuclear Physics, 119234 Moscow, Russia., Guffanti D; Institute of Physics and Cluster of Excellence PRISMA+, Johannes Gutenberg-Universität Mainz, 55099 Mainz, Germany., Ianni A; INFN Laboratori Nazionali del Gran Sasso, 67010 Assergi (AQ), Italy., Ianni A; Physics Department, Princeton University, Princeton, New Jersey 08544, USA., Jany A; M. Smoluchowski Institute of Physics, Jagiellonian University, 30348 Krakow, Poland., Jeschke D; Physik-Department, Technische Universität München, 85748 Garching, Germany., Kobychev V; Institute for Nuclear Research of NAS Ukraine, 03028 Kyiv, Ukraine., Korga G; Department of Physics, School of Engineering, Physical and Mathematical Sciences, Royal Holloway, University of London, Egham, TW20 OEX, United Kingdom.; Institute of Nuclear Research (Atomki), 4026, Debrecen, Hungary., Kumaran S; Institut für Kernphysik, Forschungszentrum Jülich, 52425 Jülich, Germany.; III. Physikalisches Institut B, RWTH Aachen University, 52062 Aachen, Germany., Laubenstein M; INFN Laboratori Nazionali del Gran Sasso, 67010 Assergi (AQ), Italy., Litvinovich E; National Research Centre Kurchatov Institute, 123182 Moscow, Russia.; National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), 115409 Moscow, Russia., Lombardi P; Dipartimento di Fisica, Università degli Studi e INFN, 20133 Milano, Italy., Lomskaya I; St. Petersburg Nuclear Physics Institute NRC Kurchatov Institute, 188350 Gatchina, Russia., Ludhova L; Institut für Kernphysik, Forschungszentrum Jülich, 52425 Jülich, Germany.; III. Physikalisches Institut B, RWTH Aachen University, 52062 Aachen, Germany., Lukyanchenko G; National Research Centre Kurchatov Institute, 123182 Moscow, Russia., Lukyanchenko L; National Research Centre Kurchatov Institute, 123182 Moscow, Russia., Machulin I; National Research Centre Kurchatov Institute, 123182 Moscow, Russia.; National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), 115409 Moscow, Russia., Martyn J; Institute of Physics and Cluster of Excellence PRISMA+, Johannes Gutenberg-Universität Mainz, 55099 Mainz, Germany., Meroni E; Dipartimento di Fisica, Università degli Studi e INFN, 20133 Milano, Italy., Meyer M; Department of Physics, Technische Universität Dresden, 01062 Dresden, Germany., Miramonti L; Dipartimento di Fisica, Università degli Studi e INFN, 20133 Milano, Italy., Misiaszek M; M. Smoluchowski Institute of Physics, Jagiellonian University, 30348 Krakow, Poland., Muratova V; St. Petersburg Nuclear Physics Institute NRC Kurchatov Institute, 188350 Gatchina, Russia., Neumair B; Physik-Department, Technische Universität München, 85748 Garching, Germany., Nieslony M; Institute of Physics and Cluster of Excellence PRISMA+, Johannes Gutenberg-Universität Mainz, 55099 Mainz, Germany., Nugmanov R; National Research Centre Kurchatov Institute, 123182 Moscow, Russia.; National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), 115409 Moscow, Russia., Oberauer L; Physik-Department, Technische Universität München, 85748 Garching, Germany., Orekhov V; Institute of Physics and Cluster of Excellence PRISMA+, Johannes Gutenberg-Universität Mainz, 55099 Mainz, Germany., Ortica F; Dipartimento di Chimica, Biologia e Biotecnologie, Università degli Studi e INFN, 06123 Perugia, Italy., Pallavicini M; Dipartimento di Fisica, Università degli Studi e INFN, 16146 Genova, Italy., Papp L; Physik-Department, Technische Universität München, 85748 Garching, Germany., Pelicci L; Institut für Kernphysik, Forschungszentrum Jülich, 52425 Jülich, Germany.; III. Physikalisches Institut B, RWTH Aachen University, 52062 Aachen, Germany., Penek Ö; Institut für Kernphysik, Forschungszentrum Jülich, 52425 Jülich, Germany., Pietrofaccia L; Physics Department, Princeton University, Princeton, New Jersey 08544, USA., Pilipenko N; St. Petersburg Nuclear Physics Institute NRC Kurchatov Institute, 188350 Gatchina, Russia., Pocar A; Amherst Center for Fundamental Interactions and Physics Department, UMass, Amherst, Massachusetts 01003, USA., Raikov G; National Research Centre Kurchatov Institute, 123182 Moscow, Russia., Ranalli MT; INFN Laboratori Nazionali del Gran Sasso, 67010 Assergi (AQ), Italy., Ranucci G; Dipartimento di Fisica, Università degli Studi e INFN, 20133 Milano, Italy., Razeto A; INFN Laboratori Nazionali del Gran Sasso, 67010 Assergi (AQ), Italy., Re A; Dipartimento di Fisica, Università degli Studi e INFN, 20133 Milano, Italy., Redchuk M; Institut für Kernphysik, Forschungszentrum Jülich, 52425 Jülich, Germany.; III. Physikalisches Institut B, RWTH Aachen University, 52062 Aachen, Germany., Romani A; Dipartimento di Chimica, Biologia e Biotecnologie, Università degli Studi e INFN, 06123 Perugia, Italy., Rossi N; INFN Laboratori Nazionali del Gran Sasso, 67010 Assergi (AQ), Italy., Schönert S; Physik-Department, Technische Universität München, 85748 Garching, Germany., Semenov D; St. Petersburg Nuclear Physics Institute NRC Kurchatov Institute, 188350 Gatchina, Russia., Settanta G; Institut für Kernphysik, Forschungszentrum Jülich, 52425 Jülich, Germany., Skorokhvatov M; National Research Centre Kurchatov Institute, 123182 Moscow, Russia.; National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), 115409 Moscow, Russia., Singhal A; Institut für Kernphysik, Forschungszentrum Jülich, 52425 Jülich, Germany.; III. Physikalisches Institut B, RWTH Aachen University, 52062 Aachen, Germany., Smirnov O; Joint Institute for Nuclear Research, 141980 Dubna, Russia., Sotnikov A; Joint Institute for Nuclear Research, 141980 Dubna, Russia., Suvorov Y; National Research Centre Kurchatov Institute, 123182 Moscow, Russia.; INFN Laboratori Nazionali del Gran Sasso, 67010 Assergi (AQ), Italy., Tartaglia R; INFN Laboratori Nazionali del Gran Sasso, 67010 Assergi (AQ), Italy., Testera G; Dipartimento di Fisica, Università degli Studi e INFN, 16146 Genova, Italy., Thurn J; Department of Physics, Technische Universität Dresden, 01062 Dresden, Germany., Unzhakov E; St. Petersburg Nuclear Physics Institute NRC Kurchatov Institute, 188350 Gatchina, Russia., Vishneva A; Joint Institute for Nuclear Research, 141980 Dubna, Russia., Vogelaar RB; Physics Department, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA., von Feilitzsch F; Physik-Department, Technische Universität München, 85748 Garching, Germany., Wessel A; GSI Helmholtzzentrum für Schwerionenforschung, Planckstrasse 1, D-64291 Darmstadt, Germany.; Institut für Kernphysik, Forschungszentrum Jülich, 52425 Jülich, Germany.; III. Physikalisches Institut B, RWTH Aachen University, 52062 Aachen, Germany., Wojcik M; M. Smoluchowski Institute of Physics, Jagiellonian University, 30348 Krakow, Poland., Wonsak B; University of Hamburg, Institute of Experimental Physics, Luruper Chaussee 149, 22761 Hamburg, Germany., Wurm M; Institute of Physics and Cluster of Excellence PRISMA+, Johannes Gutenberg-Universität Mainz, 55099 Mainz, Germany., Zavatarelli S; Dipartimento di Fisica, Università degli Studi e INFN, 16146 Genova, Italy., Zuber K; Department of Physics, Technische Universität Dresden, 01062 Dresden, Germany., Zuzel G; M. Smoluchowski Institute of Physics, Jagiellonian University, 30348 Krakow, Poland.
Jazyk: angličtina
Zdroj: Physical review letters [Phys Rev Lett] 2022 Mar 04; Vol. 128 (9), pp. 091803.
DOI: 10.1103/PhysRevLett.128.091803
Abstrakt: We report the measurement of sub-MeV solar neutrinos through the use of their associated Cherenkov radiation, performed with the Borexino detector at the Laboratori Nazionali del Gran Sasso. The measurement is achieved using a novel technique that correlates individual photon hits of events to the known position of the Sun. In an energy window between 0.54 to 0.74 MeV, selected using the dominant scintillation light, we have measured 10 887_{-2103}^{+2386}(stat)±947(syst) (68% confidence interval) solar neutrinos out of 19 904 total events. This corresponds to a ^{7}Be neutrino interaction rate of 51.6_{-12.5}^{+13.9}  counts/(day·100  ton), which is in agreement with the standard solar model predictions and the previous spectroscopic results of Borexino. The no-neutrino hypothesis can be excluded with >5σ confidence level. For the first time, we have demonstrated the possibility of utilizing the directional Cherenkov information for sub-MeV solar neutrinos, in a large-scale, high light yield liquid scintillator detector. This measurement provides an experimental proof of principle for future hybrid event reconstruction using both Cherenkov and scintillation signatures simultaneously.
Databáze: MEDLINE