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Whelan, B. Relethford, B. Ty, C. Arg\\\"uelles, C. Bohm, C. De Clercq, C. Finley, C. F. Tung, C. F. Turley, C. Haack, C. H. Wiebusch, C. J. Lozano Mariscal, C. Kopper, C. P\\'erez de los Heros, C. Raab, C. Rott, C. Spiering, C. T\\\"onnis, C. Walck, C. Weaver, C. Wendt, D. Altmann, D. Berley, D. Bindig, D. Chirkin, D. F. Cowen, D. Grant, D. Hebecker, D. Heereman, D. J. Koskinen, D. Kappesser, D. L. Xu, D. Pieloth, D. R. Nygren, D. R. Williams, D. Ryckbosch, D. Rysewyk, D. Seckel, D. Soldin, D. Tosi, D. van Eijk, D. V. Pankova, D. Z. Besson, E. Bernardini, E. Blaufuss, E. Bourbeau, E. Cheung, E. Dvorak, E. Friedman, E. Ganster, E. Jacobi, E. Lohfink, E. O'Sullivan, E. Pinat, E. Resconi, E. Unger, E. Woolsey, F. Bos, F. Bradascio, F. D. Wandler, F. Halzen, F. Huang, F. Lauber, F. Tenholt, G. Anton, G. Binder, G. C. Hill, G. de Wasseige, G. H. Collin, G. Kr\\\"uckl, G. Maggi, G. Merino, G. Moment\\'e, G. M. Spiczak, G. Neer, G. S. Japaridze, G. T. Przybylski, G. Wrede, G. W. Sullivan, G. Yodh, H. Bagherpour, H. Dembinski, H. Dujmovic, H. Kolanoski, H. Niederhausen, H. Pandya, H.-P. Bretz, I. Al Samarai, I. Ansseau, IceCube Collaboration: M. G. Aartsen, I. C. Rea, I. Safa, I. Taboada, J. A. Aguilar, J. Adams, J. A. Pepper, J. Auffenberg, J. Becker Tjus, J. Bourbeau, J. Braun, J. Brostean-Kaiser, J. C. D\\'iaz-V\\'elez, J. Felde, J. Gallagher, J. G. Gonzalez, J. Hignight, J. J. Beatty, J. J. DeLaunay, J. Kim, J. Kiryluk, J. L. Kelley, J. L. Lanfranchi, J. L\\\"unemann, J. Madsen, J. M. Conrad, J. Micallef, J. P. A. M. de Andr\\'e, J. P. Barron, J. P. Dumm, J. P. Koschinsky, J. P. Yanez, J. Sandroos, J. Soedingrekso, J. Stachurska, J. Stettner, J. Tatar, J. Vandenbroucke, J. van Santen, J. Werthebach, J. Wood, K. Andeen, K. B. M. Mahn, K. Clark, K. D. de Vries, K. D. Hoffman, K. Filimonov, K. Ghorbani, K. Hanson, K.-H. Becker, K. Helbing, K. Hoshina, K. Hultqvist, K. Jero, K. Krings, K. Leonard, K. Mase, K. Meagher, K. Rawlins, K. Satalecka, K. Wiebe, K. Woschnagg, L. Classen, L. Gerhardt, L. Halve, L. K\\\"opke, L. Lu, L. R\\\"adel, L. Rauch, L. Schumacher, L. Wille, L. Wills, M. Ackermann, M. Ahlers, M. Ahrens, M. B\\\"orner, M. Brenzke, M. Day, M. de With, M. Dunkman, M. Huber, M. H\\\"unnefeld, M. Jeong, M. J. Larson, M. J. Weiss, M. Kauer, M. Kim, M. Kowalski, M. Kroll, M. Labare, M. Lesiak-Bzdak, M. Leuermann, M. Medici, M. Meier, M. Moulai, M. N. Tobin, M. Plum, M. Rameez, M. Relich, M. Richman, M. Rongen, M. Santander, M. Schaufel, M. Song, M. Stamatikos, M. Sutherland, M. Tselengidou, M. Usner, M. Vraeghe, M. Wallraff, M. Wolf, N. Iovine, N. Kurahashi, N. L. Strotjohann, N. van Eijndhoven, N. Wandkowsky, O. Botner, P. A. Evenson, P. A. Toale, P. Backes, P. B. Price, P. Coppin, P. Correa, P. Dave, P. Desiati, P. Eller, P. Kalaczynski, P. Nakarmi, P. Peiffer, P. Schlunder, Q. R. Liu, R. Bay, R. Cross, R. G. Stokstad, R. Hellauer, R. Hoffmann, R. Hussain, R. Koirala, R. Maruyama, R. Maunu, R. Nahnhauer, R. Reimann, R. S. Busse, R. Stein, R. W. Moore, S. Axani, S. BenZvi, S. Blot, S. B\\\"oser, S. Bron, S. C. Nowicki, S. De Ridder, S. E. Sanchez Herrera, S. Fahey, S. Flis, S. Hickford, S. In, S. Kopper, S. Kunwar, S. Mancina, S. Miarecki, S. R. Klein, S. Robertson, S. Sarkar, S. Schoenen, S. Sch\\\"oneberg, S. Sclafani, S. Seunarine, S. Ter-Antonyan, S. Tilav, S. Toscano, S. Vanheule, S. W. Barwick, S. Westerhoff, S. Yoshida, T. Anderson, T. Carver, T. DeYoung, T. Ehrhardt, T. Glauch, T. Gl\\\"usenkamp, T. Hoinka, T. Karg, T. K. Gaisser, T. Kintscher, T. Kittler, T. Kuwabara, T. Menne, T. Meures, T. Montaruli, T. Palczewski, T. Ruhe, T. R. Wood, T. Schmidt, T. Stanev, T. Stezelberger, T. Stuttard, T. Yuan, U. Katz, U. Naumann, V. Baum, V. di Lorenzo, W. Giang, W. Kang, W. Luszczak, W. Rhode, W. Van Driessche, X. Bai, X. W. Xu, Y. Xu, Z. Griffith","submitted_at":"2018-04-11T07:43:17Z","abstract_excerpt":"With the observation of high-energy astrophysical neutrinos by the IceCube Neutrino Observatory, interest has risen in models of PeV-mass decaying dark matter particles to explain the observed flux. We present two dedicated experimental analyses to test this hypothesis. One analysis uses six years of IceCube data focusing on muon neutrino 'track' events from the Northern Hemisphere, while the second analysis uses two years of 'cascade' events from the full sky. Known background components and the hypothetical flux from unstable dark matter are fitted to the experimental data. 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Burgman, A. Christov, A. Franckowiak, A. Fritz, A. Goldschmidt, A. Hallgren, A. Ishihara, A. Kappes, A. Karle, A. Keivani, A. Kheirandish, A. Kyriacou, A. Obertacke Pollmann, A. Olivas, A. O'Murchadha, A. R. Fazely, A. Sandrock, A. Schneider, A. Stasik, A. Steuer, A. St\\\"o{\\ss}l, A. Terliuk, A. Turcati, A. Wallace, A. Waza, B. Eberhardt, B. Eichmann, B. Hokanson-Fasig, B. J. P. Jones, B. J. Whelan, B. Relethford, B. Ty, C. Arg\\\"uelles, C. Bohm, C. De Clercq, C. Finley, C. F. Tung, C. F. Turley, C. Haack, C. H. Wiebusch, C. J. Lozano Mariscal, C. Kopper, C. P\\'erez de los Heros, C. Raab, C. Rott, C. Spiering, C. T\\\"onnis, C. Walck, C. Weaver, C. Wendt, D. Altmann, D. Berley, D. Bindig, D. Chirkin, D. F. Cowen, D. Grant, D. Hebecker, D. Heereman, D. J. Koskinen, D. Kappesser, D. L. Xu, D. Pieloth, D. R. Nygren, D. R. Williams, D. Ryckbosch, D. Rysewyk, D. Seckel, D. Soldin, D. Tosi, D. van Eijk, D. V. Pankova, D. Z. Besson, E. Bernardini, E. Blaufuss, E. Bourbeau, E. Cheung, E. Dvorak, E. Friedman, E. Ganster, E. Jacobi, E. Lohfink, E. O'Sullivan, E. Pinat, E. Resconi, E. Unger, E. Woolsey, F. Bos, F. Bradascio, F. D. Wandler, F. Halzen, F. Huang, F. Lauber, F. Tenholt, G. Anton, G. Binder, G. C. Hill, G. de Wasseige, G. H. Collin, G. Kr\\\"uckl, G. Maggi, G. Merino, G. Moment\\'e, G. M. Spiczak, G. Neer, G. S. Japaridze, G. T. Przybylski, G. Wrede, G. W. Sullivan, G. Yodh, H. Bagherpour, H. Dembinski, H. Dujmovic, H. Kolanoski, H. Niederhausen, H. Pandya, H.-P. Bretz, I. Al Samarai, I. Ansseau, IceCube Collaboration: M. G. Aartsen, I. C. Rea, I. Safa, I. Taboada, J. A. Aguilar, J. Adams, J. A. Pepper, J. Auffenberg, J. Becker Tjus, J. Bourbeau, J. Braun, J. Brostean-Kaiser, J. C. D\\'iaz-V\\'elez, J. Felde, J. Gallagher, J. G. Gonzalez, J. Hignight, J. J. Beatty, J. J. DeLaunay, J. Kim, J. Kiryluk, J. L. Kelley, J. L. Lanfranchi, J. L\\\"unemann, J. Madsen, J. M. Conrad, J. Micallef, J. P. A. M. de Andr\\'e, J. P. Barron, J. P. Dumm, J. P. Koschinsky, J. P. Yanez, J. Sandroos, J. Soedingrekso, J. Stachurska, J. Stettner, J. Tatar, J. Vandenbroucke, J. van Santen, J. Werthebach, J. Wood, K. Andeen, K. B. M. Mahn, K. Clark, K. D. de Vries, K. D. Hoffman, K. Filimonov, K. Ghorbani, K. Hanson, K.-H. Becker, K. Helbing, K. Hoshina, K. Hultqvist, K. Jero, K. Krings, K. Leonard, K. Mase, K. Meagher, K. Rawlins, K. Satalecka, K. Wiebe, K. Woschnagg, L. Classen, L. Gerhardt, L. Halve, L. K\\\"opke, L. Lu, L. R\\\"adel, L. Rauch, L. Schumacher, L. Wille, L. Wills, M. Ackermann, M. Ahlers, M. Ahrens, M. B\\\"orner, M. Brenzke, M. Day, M. de With, M. Dunkman, M. Huber, M. H\\\"unnefeld, M. Jeong, M. J. Larson, M. J. Weiss, M. Kauer, M. Kim, M. Kowalski, M. Kroll, M. Labare, M. Lesiak-Bzdak, M. Leuermann, M. Medici, M. Meier, M. Moulai, M. N. Tobin, M. Plum, M. Rameez, M. Relich, M. Richman, M. Rongen, M. Santander, M. Schaufel, M. Song, M. Stamatikos, M. Sutherland, M. Tselengidou, M. Usner, M. Vraeghe, M. Wallraff, M. Wolf, N. Iovine, N. 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