# Measurement of Atmospheric Tau Neutrino Appearance with IceCube DeepCore **Authors:** M. G. Aartsen, M. Ackermann, J. Adams, J. A. Aguilar, M. Ahlers, M., Ahrens, D. Altmann, K. Andeen, T. Anderson, I. Ansseau, G. Anton, C., Arg\"uelles, J. Auffenberg, S. Axani, P. Backes, H. Bagherpour, X. Bai, A., Barbano, S. W. Barwick, V. Baum, R. Bay, J. J. Beatty, K.-H. Becker, J., Becker Tjus, S. BenZvi, D. Berley, E. Bernardini, D. Z. Besson, G. Binder, D., Bindig, E. Blaufuss, S. Blot, C. Bohm, M. B\"orner, S. B\"oser, O. Botner, E., Bourbeau, J. Bourbeau, F. Bradascio, J. Braun, H.-P. Bretz, S. Bron, J., Brostean-Kaiser, A. Burgman, R. S. Busse, T. Carver, C. Chen, E. Cheung, D., Chirkin, K. Clark, L. Classen, G. H. Collin, J. M. Conrad, P. Coppin, P., Correa, D. F. Cowen, R. Cross, P. Dave, J. P. A. M. de Andr\'e, C. De Clercq,, J. J. DeLaunay, H. Dembinski, K. Deoskar, S. De Ridder, P. Desiati, K. D. de, Vries, G. de Wasseige, M. de With, T. DeYoung, J. C. D\'i az-V\'elez, H., Dujmovic, M. Dunkman, E. Dvorak, B. Eberhardt, T. Ehrhardt, P. Eller, P. A., Evenson, S. Fahey, A. R. Fazely, J. Felde, K. Filimonov, C. Finley, A., Franckowiak, E. Friedman, A. Fritz, T. K. Gaisser, J. Gallagher, E. Ganster,, S. Garrappa, L. Gerhardt, K. Ghorbani, T. Glauch, T. Gl\"usenkamp, A., Goldschmidt, J. G. Gonzalez, D. Grant, Z. Griffith, M. G\"und\"uz, C. Haack,, A. Hallgren, L. Halve, F. Halzen, K. Hanson, D. Hebecker, D. Heereman, K., Helbing, R. Hellauer, F. Henningsen, S. Hickford, J. Hignight, G. C. Hill, K., D. Hoffman, R. Hoffmann, T. Hoinka, B. Hokanson-Fasig, K. Hoshina, F. Huang,, M. Huber, K. Hultqvist, M. H\"unnefeld, R. Hussain, S. In, N. Iovine, A., Ishihara, E. Jacobi, G. S. Japaridze, M. Jeong, K. Jero, B. J. P. Jones, P., Kalaczynski, W. Kang, A. Kappes, D. Kappesser, T. Karg, M. Karl, A. Karle, U., Katz, M. Kauer, A. Keivani, J. L. Kelley, A. Kheirandish, J. Kim, T., Kintscher, J. Kiryluk, T. Kittler, S. R. Klein, R. Koirala, H. Kolanoski, L., K\"opke, C. Kopper, S. Kopper, D. J. Koskinen, M. Kowalski, K. Krings, G., Kr\"uckl, N. Kulacz, S. Kunwar, N. Kurahashi, A. Kyriacou, M. Labare, J. L., Lanfranchi, M. J. Larson, F. Lauber, J. P. Lazar, K. Leonard, M. Leuermann,, Q. R. Liu, E. Lohfink, C. J. Lozano Mariscal, L. Lu, J. L\"unemann, W., Luszczak, J. Madsen, G. Maggi, K. B. M. Mahn, Y. Makino, K. Mallot, S., Mancina, I. C. Mari\c{s}, R. Maruyama, K. Mase, R. Maunu, K. Meagher, M., Medici, A. Medina, M. Meier, S. Meighen-Berger, T. Menne, G. Merino, T., Meures, S. Miarecki, J. Micallef, G. Moment\'e, T. Montaruli, R. W. Moore, M., Moulai, R. Nagai, R. Nahnhauer, P. Nakarmi, U. Naumann, G. Neer, H., Niederhausen, S. C. Nowicki, D. R. Nygren, A. Obertacke Pollmann, A. Olivas,, A. O'Murchadha, E. O'Sullivan, T. Palczewski, H. Pandya, D. V. Pankova, N., Park, P. Peiffer, C. P\'erez de los Heros, D. Pieloth, E. Pinat, A. Pizzuto,, M. Plum, P. B. Price, G. T. Przybylski, C. Raab, A. Raissi, M. Rameez, L., Rauch, K. Rawlins, I. C. Rea, R. Reimann, B. Relethford, G. Renzi, E., Resconi, W. Rhode, M. Richman, S. Robertson, M. Rongen, C. Rott, T. Ruhe, D., Ryckbosch, D. Rysewyk, I. Safa, S. E. Sanchez Herrera, A. Sandrock, J., Sandroos, M. Santander, S. Sarkar, S. Sarkar, K. Satalecka, M. Schaufel, P., Schlunder, T. Schmidt, A. Schneider, J. Schneider, L. Schumacher, S., Sclafani, D. Seckel, S. Seunarine, M. Silva, R. Snihur, J. Soedingrekso, D., Soldin, M. Song, G. M. Spiczak, C. Spiering, J. Stachurska, M. Stamatikos, T., Stanev, A. Stasik, R. Stein, J. Stettner, A. Steuer, T. Stezelberger, R. G., Stokstad, A. St\"o{\ss}l, N. L. Strotjohann, T. Stuttard, G. W. Sullivan, M., Sutherland, I. Taboada, F. Tenholt, S. Ter-Antonyan, A. Terliuk, S. Tilav, L., Tomankova, C. T\"onnis, S. Toscano, D. Tosi, M. Tselengidou, C. F. Tung, A., Turcati, R. Turcotte, C. F. Turley, B. Ty, E. Unger, M. A. Unland Elorrieta,, M. Usner, J. Vandenbroucke, W. Van Driessche, D. van Eijk, N. van Eijndhoven,, S. Vanheule, J. van Santen, M. Vraeghe, C. Walck, A. Wallace, M. Wallraff, N., Wandkowsky, T. B. Watson, C. Weaver, M. J. Weiss, J. Weldert, C. Wendt, J., Werthebach, S. Westerhoff, B. J. Whelan, N. Whitehorn, K. Wiebe, C. H., Wiebusch, L. Wille, D. R. Williams, L. Wills, M. Wolf, J. Wood, T. R. Wood,, K. Woschnagg, G. Wrede, D. L. Xu, X. W. Xu, Y. Xu, J. P. Yanez, G. Yodh, S., Yoshida, T. Yuan arXiv: 1901.05366 · 2019-02-20 ## TL;DR This paper reports the first measurement of atmospheric tau neutrino appearance using three years of IceCube DeepCore data, confirming neutrino oscillations with a significance of up to 3.2 sigma. ## Contribution It provides a novel measurement of tau neutrino appearance in atmospheric neutrinos with IceCube DeepCore, demonstrating the detector's capability to observe tau neutrino oscillations. ## Key findings - Tau neutrino normalization measured at 0.73 with uncertainties - Tau neutrino oscillation absence excluded at 3.2 sigma - Results consistent with previous IceCube and other experiments ## Abstract We present a measurement of atmospheric tau neutrino appearance from oscillations with three years of data from the DeepCore sub-array of the IceCube Neutrino Observatory. This analysis uses atmospheric neutrinos from the full sky with reconstructed energies between 5.6 GeV and 56 GeV to search for a statistical excess of cascade-like neutrino events which are the signature of nutau interactions. For CC+NC (CC-only) interactions, we measure the tau neutrino normalization to be 0.73 +0.30 -0.24 (0.57 +0.36 -0.30) and exclude the absence of tau neutrino oscillations at a significance of 3.2 sigma (2.0 sigma) These results are consistent with, and of similar precision to, a confirmatory IceCube analysis also presented, as well as measurements performed by other experiments. ## Full text _Full body text omitted from this summary view._ Fetch the complete paper as Markdown: https://tomesphere.com/paper/1901.05366/full.md ## Figures 56 figures with captions in the complete paper: https://tomesphere.com/paper/1901.05366/full.md ## References 79 references — full list in the complete paper: https://tomesphere.com/paper/1901.05366/full.md --- Source: https://tomesphere.com/paper/1901.05366