Observation of Seven Astrophysical Tau Neutrino Candidates with IceCube
Creators: name: Abbasi, R.
name: Ackermann, Markus
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: Balagopal V., A.
name: Baricevic, M.
name: Barwick, S. W.
name: Basu, V.
name: Bay, R.
name: Beatty, J. J.
name: Becker Tjus, J.
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: Boscolo Meneguolo, C.
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: Finley, C.
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: Ha Minh, M.
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: Khatee Zathul, A.
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: Leonard DeHolton, K.
name: Leszczyńska, A.
name: Lincetto, M.
name: Liu, Q. R.
name: Liubarska, M.
name: Lohfink, E.
name: Love, C.
name: Lozano Mariscal, C. J.
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: Pérez de los Heros, C.
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: 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: Unland Elorrieta, M. A.
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.
name: IceCube Collaboration
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2024
Subjects: subject: 530
subject: neutrino: flux
subject: showers: atmosphere
subject: neutrino: atmosphere
subject: neutrino: oscillation
subject: IceCube
subject: background
subject: TeV
subject: muon
subject: neutrino: VHE
subject: air
subject: neural network

description: 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 ντ events were found with visible energies ranging from roughly 20 TeV to 1 PeV and a median expected parent ντ 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-ντ astrophysical neutrinos. Thus, we rule out the absence of astrophysical ντ at the 5σ level. The measured astrophysical ντ flux is consistent with expectations based on previously published IceCube astrophysical neutrino flux measurements and neutrino oscillations.