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Observation of Seven Astrophysical Tau Neutrino Candidates with IceCube.
Abbasi, R; Ackermann, M; Adams, J; Agarwalla, S K; Aguilar, J A; Ahlers, M; Alameddine, J M; Amin, N M; Andeen, K; Anton, G; Argüelles, C; Ashida, Y; Athanasiadou, S; Axani, S N; Bai, X; Balagopal, V A; Baricevic, M; Barwick, S W; Basu, V; Bay, R; Beatty, J J; Becker Tjus, J; Beise, J; Bellenghi, C; Benning, C; BenZvi, S; Berley, D; Bernardini, E; Besson, D Z; Blaufuss, E; Blot, S; Bontempo, F; Book, J Y; Boscolo Meneguolo, C; Böser, S; Botner, O; Böttcher, J; Bourbeau, E; Braun, J; Brinson, B; Brostean-Kaiser, J; Burley, R T; Busse, R S; Butterfield, D; Campana, M A; Carloni, K; Carnie-Bronca, E G; Chattopadhyay, S; Chau, N; Chen, C.
Affiliation
  • Abbasi R; Department of Physics, Loyola University Chicago, Chicago, Illinois 60660, USA.
  • Ackermann M; Deutsches Elektronen-Synchrotron DESY, Platanenallee 6, 15738 Zeuthen, Germany.
  • Adams J; Department of Physics and Astronomy, University of Canterbury, Private Bag 4800, Christchurch, New Zealand.
  • Agarwalla SK; Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA.
  • Aguilar JA; Université Libre de Bruxelles, Science Faculty CP230, B-1050 Brussels, Belgium.
  • Ahlers M; Niels Bohr Institute, University of Copenhagen, DK-2100 Copenhagen, Denmark.
  • Alameddine JM; Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany.
  • Amin NM; Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA.
  • Andeen K; Department of Physics, Marquette University, Milwaukee, Wisconsin 53201, USA.
  • Anton G; Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, D-91058 Erlangen, Germany.
  • Argüelles C; Department of Physics and Laboratory for Particle Physics and Cosmology, Harvard University, Cambridge, Massachusetts 02138, USA.
  • Ashida Y; Department of Physics and Astronomy, University of Utah, Salt Lake City, Utah 84112, USA.
  • Athanasiadou S; Deutsches Elektronen-Synchrotron DESY, Platanenallee 6, 15738 Zeuthen, Germany.
  • Axani SN; Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA.
  • Bai X; Physics Department, South Dakota School of Mines and Technology, Rapid City, South Dakota 57701, USA.
  • Balagopal VA; Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA.
  • Baricevic M; Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA.
  • Barwick SW; Department of Physics and Astronomy, University of California, Irvine, California 92697, USA.
  • Basu V; Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA.
  • Bay R; Department of Physics, University of California, Berkeley, California 94720, USA.
  • Beatty JJ; Department of Astronomy, Ohio State University, Columbus, Ohio 43210, USA.
  • Becker Tjus J; Department of Physics and Center for Cosmology and Astro-Particle Physics, Ohio State University, Columbus, Ohio 43210, USA.
  • Beise J; Fakultät für Physik & Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany.
  • Bellenghi C; Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden.
  • Benning C; Physik-department, Technische Universität München, D-85748 Garching, Germany.
  • BenZvi S; III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany.
  • Berley D; Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627, USA.
  • Bernardini E; Department of Physics, University of Maryland, College Park, Maryland 20742, USA.
  • Besson DZ; Dipartimento di Fisica e Astronomia Galileo Galilei, Università Degli Studi di Padova, 35122 Padova PD, Italy.
  • Blaufuss E; Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045, USA.
  • Blot S; Department of Physics, University of Maryland, College Park, Maryland 20742, USA.
  • Bontempo F; Deutsches Elektronen-Synchrotron DESY, Platanenallee 6, 15738 Zeuthen, Germany.
  • Book JY; Karlsruhe Institute of Technology, Institute for Astroparticle Physics, D-76021 Karlsruhe, Germany.
  • Boscolo Meneguolo C; Department of Physics and Laboratory for Particle Physics and Cosmology, Harvard University, Cambridge, Massachusetts 02138, USA.
  • Böser S; Dipartimento di Fisica e Astronomia Galileo Galilei, Università Degli Studi di Padova, 35122 Padova PD, Italy.
  • Botner O; Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany.
  • Böttcher J; Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden.
  • Bourbeau E; III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany.
  • Braun J; Niels Bohr Institute, University of Copenhagen, DK-2100 Copenhagen, Denmark.
  • Brinson B; Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA.
  • Brostean-Kaiser J; School of Physics and Center for Relativistic Astrophysics, Georgia Institute of Technology, Atlanta, Georgia 30332, USA.
  • Burley RT; Deutsches Elektronen-Synchrotron DESY, Platanenallee 6, 15738 Zeuthen, Germany.
  • Busse RS; Department of Physics, University of Adelaide, Adelaide, 5005, Australia.
  • Butterfield D; Institut für Kernphysik, Westfälische Wilhelms-Universität Münster, D-48149 Münster, Germany.
  • Campana MA; Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA.
  • Carloni K; Department of Physics, Drexel University, 3141 Chestnut Street, Philadelphia, Pennsylvania 19104, USA.
  • Carnie-Bronca EG; Department of Physics and Laboratory for Particle Physics and Cosmology, Harvard University, Cambridge, Massachusetts 02138, USA.
  • Chattopadhyay S; Department of Physics, University of Adelaide, Adelaide, 5005, Australia.
  • Chau N; Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA.
  • Chen C; Université Libre de Bruxelles, Science Faculty CP230, B-1050 Brussels, Belgium.
Phys Rev Lett ; 132(15): 151001, 2024 Apr 12.
Article in En | MEDLINE | ID: mdl-38682982
ABSTRACT
We report on a measurement of astrophysical tau neutrinos with 9.7 yr of IceCube data. Using convolutional neural networks trained on images derived from simulated events, seven candidate ν_{τ} events were found with visible energies ranging from roughly 20 TeV to 1 PeV and a median expected parent ν_{τ} energy of about 200 TeV. Considering backgrounds from astrophysical and atmospheric neutrinos, and muons from π^{±}/K^{±} decays in atmospheric air showers, we obtain a total estimated background of about 0.5 events, dominated by non-ν_{τ} astrophysical neutrinos. Thus, we rule out the absence of astrophysical ν_{τ} at the 5σ level. The measured astrophysical ν_{τ} flux is consistent with expectations based on previously published IceCube astrophysical neutrino flux measurements and neutrino oscillations.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Phys Rev Lett Year: 2024 Document type: Article Affiliation country: Country of publication:
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Phys Rev Lett Year: 2024 Document type: Article Affiliation country: Country of publication: