Improved Characterization of the Astrophysical Muon–neutrino Flux with 9.5 Years of IceCube Data

著者: Rasha Abbasi, M. Ackermann, J. Adams, J. A. Aguilar, M. Ahlers, M. Ahrens, Jean-Marco Alameddine, Cyril Martin Alispach, A. A. Alves, N. M. Amin, K. Andeen, T. Anderson, G. Anton, C. Argüelles, Yosuke Ashida, Spencer Axani, X. Bai, Aswathi Balagopal, Anastasia Maria Barbano, S. W. Barwick, Benjamin Bastian, Vedant Basu, S. Baur, R. Bay, J. J. Beatty, Karl H. Becker, J. Becker Tjus, Chiara Bellenghi, S. BenZvi, D. Berley, E. Bernardini, D. Besson, G. Binder, D. Bindig, E. Blaufuss, Summer Blot, Matthias Boddenberg, Federico Bontempo, Jürgen Borowka, S. Böser, O. Botner, J. Böttcher, Etienne Bourbeau, Federica Bradascio, J. Braun, Bennett Brinson, S. Bron, Jannes Brostean-Kaiser, Sally-Ann Browne, A. Burgman, Ryan T. Burley, Raffaela Busse, Michael Campana, Erin Carnie-Bronca, Kunal Deoskar, Z. Chen, D. Chirkin, K. Choi, Brian Clark, K. Clark, Lew Classen, Alan Coleman, G. H. Collin, J. M. Conrad, Paul Coppin, Pablo Correa, D. F. Cowen, R. Cross, Christian Dappen, Pranav Dave, C. De Clercq, James DeLaunay, Diyaselis Delgado, H.-P. Dembinski, Kunal Deoskar, Abhishek Desai, P. Desiati, K. D. de Vries, G. de Wasseige, M. de With, T. DeYoung, A. Diaz, J. C. Díaz–Vélez, Markus Dittmer, Hrvoje Dujmović, M. Dunkman, M. A. DuVernois, Emily Dvorak, Thomas Ehrhardt, P. Eller, R. Engel, Hannah Erpenbeck, John Evans, P. A. Evenson, Kwok Lung Fan, A. R. Fazely, Nora Feigl, Sebastian Fiedlschuster, Aaron Fienberg, K. Filimonov, C. Finley, Leander Fischer, D. B. Fox, A. Franckowiak, Edward Friedman, Alexander Fritz, Philipp Fürst, T. K. Gaisser, J. S. Gallagher, Erik Ganster, Alfonso Garcia, S. Garrappa, L. Gerhardt, L. Gerhardt, Christian Gläser, Theo Glauch, T. Glüsenkamp, J. G. González, Sreetama Goswami, D. Grant, T. Grégoire, Spencer Griswold, C. Günther, Pascal Gutjahr, Christian Haack, A. Hallgren, R. Halliday, L. Halve, F. Halzen, Martin Ha Minh, K. Hanson, John Hardin, Alexander Harnisch, A. Haungs, D. Hebecker, K. Helbing, Felix Henningsen, Emma C. Hettinger, S. Hickford, J. Hignight, Colton Hill, G. C. Hill, K. D. Hoffman, R. Hoffmann, Benjamin Hokanson-Fasig, K. Hoshina, F. Huang, M. E. Huber, Thomas Huber, K. Hultqvist, Mirco Hünnefeld, Raamis Hussain, Karolin Hymon, S. In, N. Iovine, A. Ishihara, Matti Jansson, G. S. Japaridze, Minjin Jeong, Miaochen Jin, B. J. P. Jones, Donghwa Kang, Woosik Kang, X. Kang, A. Kappes, David Kappesser, Leonora Kardum, T. Karg, Martina Karl, A. Karle, U. Katz, M. Kauer, Moritz Kellermann, J. L. Kelley, Ali Kheirandish, Ken'ichi Kin, T. Kintscher, J. Kiryluk, S. R. Klein, Ramesh Koirala, H. Kolanoski, Tomas Kontrimas, L. Köpke, Claudio Kopper, S. Kopper, D. J. Koskinen, Paras Koundal, Michael Kovacevich, M. Kowalski, Tetiana Kozynets, Emma Kun, N. Kurahashi, N. N. Lad, Cristina Lagunas Gualda, J. L. Lanfranchi, M. J. Larson, Frederik Hermann Lauber, Jeffrey Lazar, J. W. Lee, Kayla Leonard DeHolton, Agnieszka Leszczyńska, Y. Li, Massimiliano Lincetto, Qinrui Liu, Maria Liubarska, Elisa Lohfink, C. J. Lozano Mariscal, L. Lu, Francesco Lucarelli, Andrew Ludwig, William Luszczak, Yang Lyu, W. Y., J. Madsen, K. B. M. Mahn, Yuya Makino, Sarah Mancina, Ioana Codrina Mariş, Ivan Martínez-Soler, R. Maruyama, K. Mase, Thomas McElroy, Frank McNally, J. V. Mead, K. Meagher, Sarah Mechbal, Andrés Medina, Maximilian Meier, S. Meighen-Berger, Jessie Micallef, D. Mockler, T. Montaruli, R. W. Moore, R. Morse, Marjon Moulai, Richard Naab, R. Nagai, Uwe Naumann, Jannis Necker, Le Viet Nguyen, Hans Niederhausen, M. U. Nisa, Sarah Nowicki, A. Obertacke Pollmann, M. Oehler, Bob Oeyen, A. Olivas, Erin O’Sullivan, Hershal Pandya, D. V. Pankova, N. Park, Grant Parker, Ek Narayan Paudel, Larissa Paul, C. Pérez de los Heros, Lilly Peters, Josh Peterson, Saskia Philippen, Sarah Pieper, Martin Pittermann, A. Pizzuto, M. Plum, Yuriy Popovych, Alessio Porcelli, Maria Prado Rodriguez, P. B. Price, B. Pries, G. T. Przybylski, Christoph Raab, Amirreza Raissi, M. Rameez, K. Rawlins, I. C. Rea, Abdul Rehman, Patrick Reichherzer, R. Reimann, Giovanni Renzi, E. Resconi, Simeon Reusch, W. Rhode, M. Richman, Benedikt Riedel, E. J. Roberts, S. Robertson, Gerrit Roellinghoff, Martin Rongen, C. Rott, T. Ruhe, D. Ryckbosch, Devyn Rysewyk Cantu, I. Safa, Julian Saffer, S. E. Sanchez Herrera, Alexander Sandrock, J. Sandroos, M. Santander, S. Sarkar, Sourav Sarkar, K. Satalecka, Merlin Schaufel, H. Schieler, S. Schindler, T. Schmidt, A. Schneider, Judith Schneider, Frank Schröder, L. Schumacher, Georg Schwefer, S. Sclafani, D. Seckel, S. Seunarine, Ankur Sharma, S. Shefali, M. Silva, Barbara Skrzypek, B. Smithers, R. Snihur, Jan Soedingrekso, Dennis Soldin, Christian Spannfellner, G. M. Spiczak, C. Spiering, Juliana Stachurska, M. Stamatikos, Todor Stanev, Robert Stein, J. Stettner, A. Steuer, T. Stezelberger, T. Stürwald, Thomas Stuttard, G. W. Sullivan, I. Taboada, S. Ter–Antonyan, S. Tilav, Franziska Tischbein, Kirsten Tollefson, Christoph Tönnis, S. Toscano, D. Tosi, Alexander Trettin, M. Tselengidou, C. F. Tung, A. Turcati, Roxanne Turcotte, Colin Turley, Jean Pierre Twagirayezu, B. Ty, Martin Unland Elorrieta, Nora Valtonen-Mattila, J. Vandenbroucke, N. van Eijndhoven, D. Vannerom, J. V. Santen, Stef Verpoest, C. Walck, T. B. Watson, C. Weaver, Philip Weigel, A. Weindl, Matthew J. Weiss, Jan Weldert, C. Wendt, Johannes Werthebach, Mark Weyrauch, N. Whitehorn, C. H. Wiebusch, D. R. Williams, Martin Wolf, K. Woschnagg, Gerrit Wrede, Johan Wilfried Wulff, Xiaolin Xu, J. P. Yanez, S. Yoshida, S. Yu, Tony Yuan, Z. Zhang, Pavel Zhelnin - The Astrophysical Journal 2022 被引用: 234

Abstract We present a measurement of the high-energy astrophysical muon–neutrino flux with the IceCube Neutrino Observatory. The measurement uses a high-purity selection of 650k neutrino-induced muon tracks from the northern celestial hemisphere, corresponding to 9.5 yr of experimental data. With respect to previous publications, the measurement is improved by the increased size of the event sample and the extended model testing beyond simple power-law hypotheses. An updated treatment of systematic uncertainties and atmospheric background fluxes has been implemented based on recent models. The best-fit single power-law parameterization for the astrophysical energy spectrum results in a normalization of ϕ @ 100 TeV ν μ + ν ¯ μ = 1.44 − 0.26 + 0.25 × 10 − 18 GeV − 1 cm − 2 s − 1 sr − 1 and a spectral index γ SPL = 2.37 − 0.09 + 0.09 , constrained in the energy range from 15 TeV to 5 PeV. The model tests include a single power law with a spectral cutoff at high energies, a log-parabola model, several source-class-specific flux predictions from the literature, and a model-independent spectral unfolding. The data are consistent with a single power-law hypothesis, however, spectra with softening above one PeV are statistically more favorable at a two-sigma level.