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Detection of astrophysical tau neutrino candidates in IceCube

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Abstract
High-energy tau neutrinos are rarely produced in atmospheric cosmic-ray showers or at cosmic particle accelerators, but are expected to emerge during neutrino propagation over cosmic distances due to flavor mixing. When high energy tau neutrinos interact inside the IceCube detector, two spatially separated energy depositions may be resolved, the first from the charged current interaction and the second from the tau lepton decay. We report a novel analysis of 7.5 years of IceCube data that identifies two candidate tau neutrinos among the 60 "High-Energy Starting Events" (HESE) collected during that period. The HESE sample offers high purity, all-sky sensitivity, and distinct observational signatures for each neutrino flavor, enabling a new measurement of the flavor composition. The measured astrophysical neutrino flavor composition is consistent with expectations, and an astrophysical tau neutrino flux is indicated at 2.8 sigma significance.
Keywords
ENERGY, ICE

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MLA
IceCube Collaboration, [missing], et al. “Detection of Astrophysical Tau Neutrino Candidates in IceCube.” EUROPEAN PHYSICAL JOURNAL C, vol. 82, no. 11, 2022, doi:10.1140/epjc/s10052-022-10795-y.
APA
IceCube Collaboration, [missing], Abbasi, R., Ackermann, M., Adams, J., Aguilar, J. A., Ahlers, M., … Zhang, Z. (2022). Detection of astrophysical tau neutrino candidates in IceCube. EUROPEAN PHYSICAL JOURNAL C, 82(11). https://doi.org/10.1140/epjc/s10052-022-10795-y
Chicago author-date
IceCube Collaboration, [missing], R. Abbasi, M. Ackermann, J. Adams, J. A. Aguilar, M. Ahlers, M. Ahrens, et al. 2022. “Detection of Astrophysical Tau Neutrino Candidates in IceCube.” EUROPEAN PHYSICAL JOURNAL C 82 (11). https://doi.org/10.1140/epjc/s10052-022-10795-y.
Chicago author-date (all authors)
IceCube Collaboration, [missing], R. Abbasi, M. Ackermann, J. Adams, J. A. Aguilar, M. Ahlers, M. Ahrens, C. Alispach, A. A. Alves, N. M. Amin, K. Andeen, T. Anderson, I. Ansseau, G. Anton, C. Argüelles, S. Axani, X. Bai, A. V. Balagopal, A. Barbano, S. W. Barwick, B. Bastian, V. Basu, V. Baum, S. Baur, R. Bay, J. J. Beatty, K.-H. Becker, J. Becker Tjus, C. Bellenghi, S. BenZvi, D. Berley, E. Bernardini, D. Z. Besson, G. Binder, D. Bindig, E. Blaufuss, S. Blot, S. Böser, O. Botner, J. Böttcher, E. Bourbeau, J. Bourbeau, F. Bradascio, J. Braun, S. Bron, J. Brostean-Kaiser, A. Burgman, R. S. Busse, M. A. Campana, C. Chen, D. Chirkin, S. Choi, B. A. Clark, K. Clark, L. Classen, A. Coleman, G. H. Collin, J. M. Conrad, P. Coppin, P. Correa, D. F. Cowen, R. Cross, P. Dave, C. De Clercq, J. J. DeLaunay, H. Dembinski, K. Deoskar, S. De Ridder, A. Desai, P. Desiati, K. D. de Vries, G. de Wasseige, M. de With, T. DeYoung, S. Dharani, A. Diaz, J. C. Díaz-Vélez, H. Dujmovic, M. Dunkman, M. A. DuVernois, E. Dvorak, T. Ehrhardt, P. Eller, R. Engel, J. Evans, P. A. Evenson, S. Fahey, A. R. Fazely, S. Fiedlschuster, A. T. Fienberg, K. Filimonov, C. Finley, L. Fischer, D. Fox, A. Franckowiak, E. Friedman, A. Fritz, P. Fürst, T. K. Gaisser, J. Gallagher, E. Ganster, S. Garrappa, L. Gerhardt, A. Ghadimi, T. Glauch, T. Glüsenkamp, A. Goldschmidt, J. G. Gonzalez, S. Goswami, D. Grant, T. Grégoire, Z. Griffith, S. Griswold, M. Gündüz, C. Haack, A. Hallgren, R. Halliday, L. Halve, F. Halzen, M. Ha Minh, K. Hanson, J. Hardin, A. Haungs, S. Hauser, D. Hebecker, K. Helbing, F. Henningsen, S. Hickford, J. Hignight, C. Hill, G. C. Hill, K. D. Hoffman, R. Hoffmann, T. Hoinka, B. Hokanson-Fasig, K. Hoshina, F. Huang, M. Huber, T. Huber, K. Hultqvist, M. Hünnefeld, R. Hussain, S. In, N. Iovine, A. Ishihara, M. Jansson, G. S. Japaridze, M. Jeong, B. J. P. Jones, R. Joppe, D. Kang, W. Kang, X. Kang, A. Kappes, D. Kappesser, T. Karg, M. Karl, A. Karle, U. Katz, M. Kauer, M. Kellermann, J. L. Kelley, A. Kheirandish, J. Kim, K. Kin, T. Kintscher, J. Kiryluk, S. R. Klein, R. Koirala, H. Kolanoski, L. Köpke, C. Kopper, S. Kopper, D. J. Koskinen, P. Koundal, M. Kovacevich, M. Kowalski, K. Krings, G. Krückl, N. Kulacz, N. Kurahashi, A. Kyriacou, C. Lagunas Gualda, J. L. Lanfranchi, M. J. Larson, F. Lauber, J. P. Lazar, K. Leonard, A. Leszczyńska, Y. Li, Q. R. Liu, E. Lohfink, C. J. Lozano Mariscal, L. Lu, F. Lucarelli, A. Ludwig, W. Luszczak, Y. Lyu, W. Y. Ma, J. Madsen, K. B. M. Mahn, Y. Makino, P. Mallik, S. Mancina, I. C. Mariş, R. Maruyama, K. Mase, F. McNally, K. Meagher, A. Medina, M. Meier, S. Meighen-Berger, J. Merz, J. Micallef, D. Mockler, G. Momenté, T. Montaruli, R. W. Moore, R. Morse, M. Moulai, R. Naab, R. Nagai, U. Naumann, J. Necker, G. Neer, L. V. Nguyễn, H. Niederhausen, M. U. Nisa, S. C. Nowicki, D. R. Nygren, A. Obertacke Pollmann, M. Oehler, A. Olivas, E. O’Sullivan, H. Pandya, D. V. Pankova, N. Park, G. K. Parker, E. N. Paudel, P. Peiffer, C. Pérez de los Heros, S. Philippen, D. Pieloth, S. Pieper, A. Pizzuto, M. Plum, Y. Popovych, A. Porcelli, M. Prado Rodriguez, P. B. Price, G. T. Przybylski, C. Raab, A. Raissi, M. Rameez, K. Rawlins, I. C. Rea, A. Rehman, R. Reimann, M. Renschler, G. Renzi, E. Resconi, S. Reusch, W. Rhode, M. Richman, B. Riedel, S. Robertson, G. Roellinghoff, M. Rongen, C. Rott, T. Ruhe, Dirk Ryckbosch, D. Rysewyk Cantu, I. Safa, S. E. Sanchez Herrera, A. Sandrock, J. Sandroos, M. Santander, S. Sarkar, S. Sarkar, K. Satalecka, M. Scharf, M. Schaufel, H. Schieler, P. Schlunder, T. Schmidt, A. Schneider, J. Schneider, F. G. Schröder, L. Schumacher, S. Sclafani, D. Seckel, S. Seunarine, S. Shefali, M. Silva, B. Smithers, R. Snihur, J. Soedingrekso, D. Soldin, G. M. Spiczak, C. Spiering, J. Stachurska, M. Stamatikos, T. Stanev, R. Stein, J. Stettner, A. Steuer, T. Stezelberger, R. G. Stokstad, N. L. Strotjohann, T. Stuttard, G. W. Sullivan, I. Taboada, F. Tenholt, S. Ter-Antonyan, S. Tilav, F. Tischbein, K. Tollefson, L. Tomankova, C. Tönnis, S. Toscano, D. Tosi, A. Trettin, M. Tselengidou, C. F. Tung, A. Turcati, R. Turcotte, C. F. Turley, J. P. Twagirayezu, B. Ty, E. Unger, M. A. Unland Elorrieta, M. Usner, J. Vandenbroucke, D. van Eijk, N. van Eijndhoven, D. Vannerom, J. van Santen, S. Verpoest, M. Vraeghe, C. Walck, A. Wallace, N. Wandkowsky, T. B. Watson, C. Weaver, A. Weindl, M. J. Weiss, J. Weldert, C. Wendt, J. Werthebach, M. Weyrauch, B. J. Whelan, N. Whitehorn, K. Wiebe, C. H. Wiebusch, D. R. Williams, M. Wolf, T. R. Wood, K. Woschnagg, G. Wrede, J. Wulff, X. W. Xu, Y. Xu, J. P. Yanez, S. Yoshida, T. Yuan, and Z. Zhang. 2022. “Detection of Astrophysical Tau Neutrino Candidates in IceCube.” EUROPEAN PHYSICAL JOURNAL C 82 (11). doi:10.1140/epjc/s10052-022-10795-y.
Vancouver
1.
IceCube Collaboration [missing], Abbasi R, Ackermann M, Adams J, Aguilar JA, Ahlers M, et al. Detection of astrophysical tau neutrino candidates in IceCube. EUROPEAN PHYSICAL JOURNAL C. 2022;82(11).
IEEE
[1]
[missing] IceCube Collaboration et al., “Detection of astrophysical tau neutrino candidates in IceCube,” EUROPEAN PHYSICAL JOURNAL C, vol. 82, no. 11, 2022.
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  abstract     = {{High-energy tau neutrinos are rarely produced in atmospheric cosmic-ray showers or at cosmic particle accelerators, but are expected to emerge during neutrino propagation over cosmic distances due to flavor mixing. When high energy tau neutrinos interact inside the IceCube detector, two spatially separated energy depositions may be resolved, the first from the charged current interaction and the second from the tau lepton decay. We report a novel analysis of 7.5 years of IceCube data that identifies two candidate tau neutrinos among the 60 "High-Energy Starting Events" (HESE) collected during that period. The HESE sample offers high purity, all-sky sensitivity, and distinct observational signatures for each neutrino flavor, enabling a new measurement of the flavor composition. The measured astrophysical neutrino flavor composition is consistent with expectations, and an astrophysical tau neutrino flux is indicated at 2.8 sigma significance.}},
  articleno    = {{1031}},
  author       = {{IceCube Collaboration, [missing] and Abbasi, R. and Ackermann, M. and Adams, J. and Aguilar, J. A. and Ahlers, M. and Ahrens, M. and Alispach, C. and Alves, A. A. and Amin, N. M. and Andeen, K. and Anderson, T. and Ansseau, I. and Anton, G. and Argüelles, C. and Axani, S. and Bai, X. and Balagopal, A. V. and Barbano, A. and Barwick, S. W. and Bastian, B. and Basu, V. and Baum, V. and Baur, S. and Bay, R. and Beatty, J. J. and Becker, K.-H. and Becker Tjus, J. and Bellenghi, C. and BenZvi, S. and Berley, D. and Bernardini, E. and Besson, D. Z. and Binder, G. and Bindig, D. and Blaufuss, E. and Blot, S. and Böser, S. and Botner, O. and Böttcher, J. and Bourbeau, E. and Bourbeau, J. and Bradascio, F. and Braun, J. and Bron, S. and Brostean-Kaiser, J. and Burgman, A. and Busse, R. S. and Campana, M. A. and Chen, C. and Chirkin, D. and Choi, S. and Clark, B. A. and Clark, K. and Classen, L. and Coleman, A. and Collin, G. H. and Conrad, J. M. and Coppin, P. and Correa, P. and Cowen, D. F. and Cross, R. and Dave, P. and De Clercq, C. and DeLaunay, J. J. and Dembinski, H. and Deoskar, K. and De Ridder, S. and Desai, A. and Desiati, P. and de Vries, K. D. and de Wasseige, G. and de With, M. and DeYoung, T. and Dharani, S. and Diaz, A. and Díaz-Vélez, J. C. and Dujmovic, H. and Dunkman, M. and DuVernois, M. A. and Dvorak, E. and Ehrhardt, T. and Eller, P. and Engel, R. and Evans, J. and Evenson, P. A. and Fahey, S. and Fazely, A. R. and Fiedlschuster, S. and Fienberg, A. T. and Filimonov, K. and Finley, C. and Fischer, L. and Fox, D. and Franckowiak, A. and Friedman, E. and Fritz, A. and Fürst, P. and Gaisser, T. K. and Gallagher, J. and Ganster, E. and Garrappa, S. and Gerhardt, L. and Ghadimi, A. and Glauch, T. and Glüsenkamp, T. and Goldschmidt, A. and Gonzalez, J. G. and Goswami, S. and Grant, D. and Grégoire, T. and Griffith, Z. and Griswold, S. and Gündüz, M. and Haack, C. and Hallgren, A. and Halliday, R. and Halve, L. and Halzen, F. and Ha Minh, M. and Hanson, K. and Hardin, J. and Haungs, A. and Hauser, S. and Hebecker, D. and Helbing, K. and Henningsen, F. and Hickford, S. and Hignight, J. and Hill, C. and Hill, G. C. and Hoffman, K. D. and Hoffmann, R. and Hoinka, T. and Hokanson-Fasig, B. and Hoshina, K. and Huang, F. and Huber, M. and Huber, T. and Hultqvist, K. and Hünnefeld, M. and Hussain, R. and In, S. and Iovine, N. and Ishihara, A. and Jansson, M. and Japaridze, G. S. and Jeong, M. and Jones, B. J. P. and Joppe, R. and Kang, D. and Kang, W. and Kang, X. and Kappes, A. and Kappesser, D. and Karg, T. and Karl, M. and Karle, A. and Katz, U. and Kauer, M. and Kellermann, M. and Kelley, J. L. and Kheirandish, A. and Kim, J. and Kin, K. and Kintscher, T. and Kiryluk, J. and Klein, S. R. and Koirala, R. and Kolanoski, H. and Köpke, L. and Kopper, C. and Kopper, S. and Koskinen, D. J. and Koundal, P. and Kovacevich, M. and Kowalski, M. and Krings, K. and Krückl, G. and Kulacz, N. and Kurahashi, N. and Kyriacou, A. and Lagunas Gualda, C. and Lanfranchi, J. L. and Larson, M. J. and Lauber, F. and Lazar, J. P. and Leonard, K. and Leszczyńska, A. and Li, Y. and Liu, Q. R. and Lohfink, E. and Lozano Mariscal, C. J. and Lu, L. and Lucarelli, F. and Ludwig, A. and Luszczak, W. and Lyu, Y. and Ma, W. Y. and Madsen, J. and Mahn, K. B. M. and Makino, Y. and Mallik, P. and Mancina, S. and Mariş, I. C. and Maruyama, R. and Mase, K. and McNally, F. and Meagher, K. and Medina, A. and Meier, M. and Meighen-Berger, S. and Merz, J. and Micallef, J. and Mockler, D. and Momenté, G. and Montaruli, T. and Moore, R. W. and Morse, R. and Moulai, M. and Naab, R. and Nagai, R. and Naumann, U. and Necker, J. and Neer, G. and Nguyễn, L. V. and Niederhausen, H. and Nisa, M. U. and Nowicki, S. C. and Nygren, D. R. and Pollmann, A. Obertacke and Oehler, M. and Olivas, A. and O’Sullivan, E. and Pandya, H. and Pankova, D. V. and Park, N. and Parker, G. K. and Paudel, E. N. and Peiffer, P. and de los Heros, C. Pérez and Philippen, S. and Pieloth, D. and Pieper, S. and Pizzuto, A. and Plum, M. and Popovych, Y. and Porcelli, A. and Prado Rodriguez, M. and Price, P. B. and Przybylski, G. T. and Raab, C. and Raissi, A. and Rameez, M. and Rawlins, K. and Rea, I. C. and Rehman, A. and Reimann, R. and Renschler, M. and Renzi, G. and Resconi, E. and Reusch, S. and Rhode, W. and Richman, M. and Riedel, B. and Robertson, S. and Roellinghoff, G. and Rongen, M. and Rott, C. and Ruhe, T. and Ryckbosch, Dirk and Rysewyk Cantu, D. and Safa, I. and Sanchez Herrera, S. E. and Sandrock, A. and Sandroos, J. and Santander, M. and Sarkar, S. and Sarkar, S. and Satalecka, K. and Scharf, M. and Schaufel, M. and Schieler, H. and Schlunder, P. and Schmidt, T. and Schneider, A. and Schneider, J. and Schröder, F. G. and Schumacher, L. and Sclafani, S. and Seckel, D. and Seunarine, S. and Shefali, S. and Silva, M. and Smithers, B. and Snihur, R. and Soedingrekso, J. and Soldin, D. and Spiczak, G. M. and Spiering, C. and Stachurska, J. and Stamatikos, M. and Stanev, T. and Stein, R. and Stettner, J. and Steuer, A. and Stezelberger, T. and Stokstad, R. G. and Strotjohann, N. L. and Stuttard, T. and Sullivan, G. W. and Taboada, I. and Tenholt, F. and Ter-Antonyan, S. and Tilav, S. and Tischbein, F. and Tollefson, K. and Tomankova, L. and Tönnis, C. and Toscano, S. and Tosi, D. and Trettin, A. and Tselengidou, M. and Tung, C. F. and Turcati, A. and Turcotte, R. and Turley, C. F. and Twagirayezu, J. P. and Ty, B. and Unger, E. and Unland Elorrieta, M. A. and Usner, M. and Vandenbroucke, J. and Eijk, D. van and Eijndhoven, N. van and Vannerom, D. and Santen, J. van and Verpoest, S. and Vraeghe, M. and Walck, C. and Wallace, A. and Wandkowsky, N. and Watson, T. B. and Weaver, C. and Weindl, A. and Weiss, M. J. and Weldert, J. and Wendt, C. and Werthebach, J. and Weyrauch, M. and Whelan, B. J. and Whitehorn, N. and Wiebe, K. and Wiebusch, C. H. and Williams, D. R. and Wolf, M. and Wood, T. R. and Woschnagg, K. and Wrede, G. and Wulff, J. and Xu, X. W. and Xu, Y. and Yanez, J. P. and Yoshida, S. and Yuan, T. and Zhang, Z.}},
  issn         = {{1434-6044}},
  journal      = {{EUROPEAN PHYSICAL JOURNAL C}},
  keywords     = {{ENERGY,ICE}},
  language     = {{eng}},
  number       = {{11}},
  pages        = {{15}},
  title        = {{Detection of astrophysical tau neutrino candidates in IceCube}},
  url          = {{http://doi.org/10.1140/epjc/s10052-022-10795-y}},
  volume       = {{82}},
  year         = {{2022}},
}

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