Observation of Seven Astrophysical Tau Neutrino Candidates with IceCube
Creators: name: IceCube Collaboration
name: Abbasi, R.
name: Ackermann, M.
name: Adams, J.
name: Agarwalla, S. K.
name: Aguilar, J. A.
name: Ahlers, M.
name: Alameddine, J. M.
name: Amin, N. M.
name: Andeen, K.
name: Anton, G.
name: Argüelles, C.
name: Ashida, Y.
name: Athanasiadou, S.
name: Axani, S. N.
name: Bai, X.
name: V., A. Balagopal
name: Baricevic, M.
name: Barwick, S. W.
name: Basu, V.
name: Bay, R.
name: Beatty, J. J.
name: Tjus, J. Becker
name: Beise, J.
name: Bellenghi, C.
name: Benning, C.
name: BenZvi, S.
name: Berley, D.
name: Bernardini, E.
name: Besson, D. Z.
name: Blaufuss, E.
name: Blot, S.
name: Bontempo, F.
name: Book, J. Y.
name: Meneguolo, C. Boscolo
name: Böser, S.
name: Botner, O.
name: Böttcher, J.
name: Bourbeau, E.
name: Braun, J.
name: Brinson, B.
name: Brostean-Kaiser, J.
name: Burley, R. T.
name: Busse, R. S.
name: Butterfield, D.
name: Campana, M. A.
name: Carloni, K.
name: Carnie-Bronca, E. G.
name: Chattopadhyay, S.
name: Chau, N.
name: Chen, C.
name: Chen, Z.
name: Chirkin, D.
name: Choi, S.
name: Clark, B. A.
name: Classen, L.
name: Coleman, A.
name: Collin, G. H.
name: Connolly, A.
name: Conrad, J. M.
name: Coppin, P.
name: Correa, P.
name: Cowen, D. F.
name: Dave, P.
name: De Clercq, C.
name: DeLaunay, J. J.
name: Delgado, D.
name: Deng, S.
name: Deoskar, K.
name: Desai, A.
name: Desiati, P.
name: de Vries, K. D.
name: de Wasseige, G.
name: DeYoung, T.
name: Diaz, A.
name: Díaz-Vélez, J. C.
name: Dittmer, M.
name: Domi, A.
name: Dujmovic, H.
name: DuVernois, M. A.
name: Ehrhardt, T.
name: Eller, P.
name: Ellinger, E.
name: Mentawi, S. El
name: Elsässer, D.
name: Engel, R.
name: Erpenbeck, H.
name: Evans, J.
name: Evenson, P. A.
name: Fan, K. L.
name: Fang, K.
name: Farrag, K.
name: Fazely, A. R.
name: Feigl, N.
name: Fiedlschuster, S.
name: Fienberg, A. T.
name: Fischer, L.
name: Fox, D.
name: Franckowiak, A.
name: Fritz, A.
name: Fürst, P.
name: Gallagher, J.
name: Ganster, E.
name: Garcia, A.
name: Gerhardt, L.
name: Ghadimi, A.
name: Glaser, C.
name: Glauch, T.
name: Glüsenkamp, T.
name: Goehlke, N.
name: Gonzalez, J. G.
name: Goswami, S.
name: Grant, D.
name: Gray, S. J.
name: Gries, O.
name: Griffin, S.
name: Griswold, S.
name: Groth, K. M.
name: Günther, C.
name: Gutjahr, P.
name: Haack, C.
name: Hallgren, A.
name: Halliday, R.
name: Halve, L.
name: Halzen, F.
name: Hamdaoui, H.
name: Minh, M. Ha
name: Hanson, K.
name: Hardin, J.
name: Harnisch, A. A.
name: Hatch, P.
name: Haungs, A.
name: Helbing, K.
name: Hellrung, J.
name: Henningsen, F.
name: Heuermann, L.
name: Heyer, N.
name: Hickford, S.
name: Hidvegi, A.
name: Hill, C.
name: Hill, G. C.
name: Hoffman, K. D.
name: Hori, S.
name: Hoshina, K.
name: Hou, W.
name: Huber, T.
name: Hultqvist, K.
name: Hünnefeld, M.
name: Hussain, R.
name: Hymon, K.
name: In, S.
name: Ishihara, A.
name: Jacquart, M.
name: Janik, O.
name: Jansson, M.
name: Japaridze, G. S.
name: Jeong, M.
name: Jin, M.
name: Jones, B. J. P.
name: Kang, D.
name: Kang, W.
name: Kang, X.
name: Kappes, A.
name: Kappesser, D.
name: Kardum, L.
name: Karg, T.
name: Karl, M.
name: Karle, A.
name: Katz, U.
name: Kauer, M.
name: Kelley, J. L.
name: Zathul, A. Khatee
name: Kheirandish, A.
name: Kiryluk, J.
name: Klein, S. R.
name: Kochocki, A.
name: Koirala, R.
name: Kolanoski, H.
name: Kontrimas, T.
name: Köpke, L.
name: Kopper, C.
name: Koskinen, D. J.
name: Koundal, P.
name: Kovacevich, M.
name: Kowalski, M.
name: Kozynets, T.
name: Krishnamoorthi, J.
name: Kruiswijk, K.
name: Krupczak, E.
name: Kumar, A.
name: Kun, E.
name: Kurahashi, N.
name: Lad, N.
name: Gualda, C. Lagunas
name: Lamoureux, M.
name: Larson, M. J.
name: Latseva, S.
name: Lauber, F.
name: Lazar, J. P.
name: Lee, J. W.
name: DeHolton, K. Leonard
name: Leszczyńska, A.
name: Lincetto, M.
name: Liu, Q. R.
name: Liubarska, M.
name: Lohfink, E.
name: Love, C.
name: Mariscal, C. J. Lozano
name: Lucarelli, F.
name: Luszczak, W.
name: Lyu, Y.
name: Madsen, J.
name: Mahn, K. B. M.
name: Makino, Y.
name: Manao, E.
name: Mancina, S.
name: Sainte, W. Marie
name: Mariş, I. C.
name: Marka, S.
name: Marka, Z.
name: Marsee, M.
name: Martinez-Soler, I.
name: Maruyama, R.
name: Mayhew, F.
name: McElroy, T.
name: McNally, F.
name: Mead, J. V.
name: Meagher, K.
name: Mechbal, S.
name: Medina, A.
name: Meier, M.
name: Merckx, Y.
name: Merten, L.
name: Micallef, J.
name: Mitchell, J.
name: Montaruli, T.
name: Moore, R. W.
name: Morii, Y.
name: Morse, R.
name: Moulai, M.
name: Mukherjee, T.
name: Naab, R.
name: Nagai, R.
name: Nakos, M.
name: Naumann, U.
name: Necker, J.
name: Negi, A.
name: Neumann, M.
name: Niederhausen, H.
name: Nisa, M. U.
name: Noell, A.
name: Novikov, A.
name: Nowicki, S. C.
name: Pollmann, A. Obertacke
name: O'Dell, V.
name: Oehler, M.
name: Oeyen, B.
name: Olivas, A.
name: Orsoe, R.
name: Osborn, J.
name: O'Sullivan, E.
name: Pandya, H.
name: Pankova, D. V.
name: Park, N.
name: Parker, G. K.
name: Paudel, E. N.
name: Paul, L.
name: Heros, C. Pérez de los
name: Peterson, J.
name: Philippen, S.
name: Pizzuto, A.
name: Plum, M.
name: Pontén, A.
name: Popovych, Y.
name: Rodriguez, M. Prado
name: Pries, B.
name: Procter-Murphy, R.
name: Przybylski, G. T.
name: Raab, C.
name: Rack-Helleis, J.
name: Rawlins, K.
name: Rechav, Z.
name: Rehman, A.
name: Reichherzer, P.
name: Renzi, G.
name: Resconi, E.
name: Reusch, S.
name: Rhode, W.
name: Riedel, B.
name: Rifaie, A.
name: Roberts, E. J.
name: Robertson, S.
name: Rodan, S.
name: Roellinghoff, G.
name: Rongen, M.
name: Rott, C.
name: Ruhe, T.
name: Ruohan, L.
name: Ryckbosch, D.
name: Safa, I.
name: Saffer, J.
name: Salazar-Gallegos, D.
name: Sampathkumar, P.
name: Herrera, S. E. Sanchez
name: Sandrock, A.
name: Santander, M.
name: Sarkar, S.
name: Sarkar, S.
name: Savelberg, J.
name: Savina, P.
name: Schaufel, M.
name: Schieler, H.
name: Schindler, S.
name: Schlickmann, L.
name: Schlüter, B.
name: Schlüter, F.
name: Schmeisser, N.
name: Schmidt, T.
name: Schneider, J.
name: Schröder, F. G.
name: Schumacher, L.
name: Schwefer, G.
name: Sclafani, S.
name: Seckel, D.
name: Seikh, M.
name: Seunarine, S.
name: Shah, R.
name: Sharma, A.
name: Shefali, S.
name: Shimizu, N.
name: Silva, M.
name: Skrzypek, B.
name: Smithers, B.
name: Snihur, R.
name: Soedingrekso, J.
name: Søgaard, A.
name: Soldin, D.
name: Soldin, P.
name: Sommani, G.
name: Spannfellner, C.
name: Spiczak, G. M.
name: Stamatikos, M.
name: Stanev, T.
name: Stezelberger, T.
name: Stürwald, T.
name: Stuttard, T.
name: Sullivan, G. W.
name: Taboada, I.
name: Ter-Antonyan, S.
name: Thiesmeyer, M.
name: Thompson, W. G.
name: Thwaites, J.
name: Tilav, S.
name: Tollefson, K.
name: Tönnis, C.
name: Toscano, S.
name: Tosi, D.
name: Trettin, A.
name: Tung, C. F.
name: Turcotte, R.
name: Twagirayezu, J. P.
name: Ty, B.
name: Elorrieta, M. A. Unland
name: Upadhyay, A. K.
name: Upshaw, K.
name: Valtonen-Mattila, N.
name: Vandenbroucke, J.
name: van Eijndhoven, N.
name: Vannerom, D.
name: van Santen, J.
name: Vara, J.
name: Veitch-Michaelis, J.
name: Venugopal, M.
name: Vereecken, M.
name: Verpoest, S.
name: Veske, D.
name: Vijai, A.
name: Walck, C.
name: Weaver, C.
name: Weigel, P.
name: Weindl, A.
name: Weldert, J.
name: Wen, A. Y.
name: Wendt, C.
name: Werthebach, J.
name: Weyrauch, M.
name: Whitehorn, N.
name: Wiebusch, C. H.
name: Willey, N.
name: Williams, D. R.
name: Witthaus, L.
name: Wolf, A.
name: Wolf, M.
name: Wrede, G.
name: Xu, X. W.
name: Yanez, J. P.
name: Yildizci, E.
name: Yoshida, S.
name: Young, R.
name: Yu, F.
name: Yu, S.
name: Zhang, Z.
name: Zhelnin, P.
name: Zilberman, P.
name: Zimmerman, M.
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: We report on a measurement of astrophysical tau neutrinos with 9.7 years 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 $π^\pm/K^\pm$ 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.
description: Accepted for publication in Physical Review Letters. This version includes full author list metadata