Accès ouvert déclaré
2025
article
Search for Extremely-High-Energy Neutrinos and First Constraints on the Ultrahigh-Energy Cosmic-Ray Proton Fraction with IceCube
R. Abbasi, J. Adams, Sanjib Kumar Agarwalla, N. M. Amin, K. Andeen, Yosuke Ashida, M. Baricevic, S. W. Barwick, Simeon Bash, R. Bay, J. J. Beatty, Chiara Bellenghi, D. Berley, E. Bernardini, D. Z. Besson, F. Bontempo, O. Botner, J. Braun, B. Brinson, Zoe Brisson-Tsavoussis, J. Brostean-Kaiser, L. Brusa, R. T. Burley, Delaney Butterfield, Michael Campana, I. Caracas, K. Carloni, J. Graciá‐Carpio, Sharmistha Chattopadhyay, Z. Chen, D. Chirkin, S. Choi, Peter John Cusack Coleman, G. H. Collin, A. Connolly, Rebecca Corley, S. Deng, A. F. Díaz, J. C. Díaz–Vélez, P. Dierichs, M. Dittmer, A. Domi, Lincoln Draper, K. Dutta, M. A. DuVernois, T. Ehrhardt, Leonhard Eidenschink, A. Eimer, E. Ellinger, Sharif El Mentawi, Dominik Elsässer, R. Engel, H. Erpenbeck, Waleed Esmail, John Evans, P. A. Evenson, Kwok Lung Fan, K. Fang, Kareem Ramadan Farrag, Nora Feigl, Sebastian Fiedlschuster, C. Finley, M. García, Gaurav Garg, L. Gerhardt, C. Girard-Carillo, C. Glaser, J. G. Gonzalez, Sreetama Goswami, Alejandra Granados, D. Grant, S. J. Gray, S. Griffin, S. Griswold, Kathrine Mørch Groth, C. Ha, L. Halve, F. Halzen, Leon Hamacher, H. Hamdaoui, M. Ha Minh, Michael Handt, John Hardin, A. A. Harnisch, P. Hatch, A. Haungs, Jonas Häußler, Jonas Hellrung, J. Hermannsgabner, L. Heuermann, N. Heyer, S. Hickford, A. Hidvegi, Colton Hill, G. C. Hill, Ramy Hmaid, K. D. Hoffman, Sam Hori, K. Hoshina, Matheus Hostert, R. Hussain, Karolin Hymon, A. Ishihara, W. Iwakiri, M. Jacquart, M. Jansson, M. Jeong, Miaochen Jin, Woosik Kang, X. Kang, A. Kappes, D. Kappesser, Leonora Kardum, T. Karg, A. Karle, Akanksha Katil, U. Katz, M. Kauer, J. L. Kelley, Manish Khanal, S. R. Klein, L. Köpke, Claudio Kopper, Tetiana Kozynets, Emmett Krupczak, Anil Kumar, E. Kun, Frederik Hermann Lauber, A. Leszczyńska, Yantao Liu, M. Liubarska, Christina Love, J. Madsen, Else Magnus, K. B. M. Mahn, Y. Makino, Alicia Mand, W. Marie Sainte, Ioana Codrina Mariş, M. Marsee, Ivan Martínez-Soler, J. V. Mead, Kieron Meagher, S. Mechbal, A. Medina, M. Meier, Yarno Merckx, J. Mitchell, Y. Morii, R. Morse, M. Nakos, U. Naumann, Jannis Necker, Akshima Negi, M.A. Neumann, Hans Niederhausen, A. Noell, A. Novikov, A. Olivas, R. Ørsøe, John W. Osborn, Veronika Palušová, G. K. Parker, C. Pérez de los Heros, Teresa Pernice, Josh Peterson, M. Plum, Axel Ponten, Yuriy Popovych, Maria Prado Rodriguez, B. Pries, R. Procter-Murphy, G. T. Przybylski, Lilly Pyras, J. Rack-Helleis, N. Rad, Martin Langgård Ravn, K. Rawlins, Zoë Rechav, Abdul Rehman, S. Reusch, W. Rhode, Adam Rifaie, E. J. Roberts, S. Robertson, Steven T. Rodan, T. Ruhe, L. Ruohan, I. Safa, Julian Saffer, Daniel Salazar-Gallegos, P. Sampathkumar, A. Sandrock, M. Santander, Sourav Sarkar, J. Savelberg, Pierpaolo Savina, Patrick Schaile, M. Schaufel, H. Schieler, S. Schindler, Lea Schlickmann, B. Schlüter, Felix Schlüter, Nick Schmeisser, T. Schmidt, Frank Schröder, L. Schumacher, Sonke Schwirn, S. Sclafani, D. Seckel, Leo Seen, Mohammad Ful Hossain Seikh, Minhye Seo, S. Seunarine, Per Arne Sevle Myhr, R. Shah, S. Shefali, N. Shimizu, B. Skrzypek, Ben Smithers, R. Snihur, Jan Soedingrekso, A. Søgaard, Dennis Soldin, Giacomo Sommani, Christian Spannfellner, G. M. Spiczak, C. Spiering, Juliana Stachurska, M. Stamatikos, T. Stanev, T. Stezelberger, T. Stürwald, Thomas Stuttard, G. W. Sullivan, I. Taboada, S. Ter–Antonyan, A. Terliuk, Matthias Thiesmeyer, W. G. Thompson, Jessie Thwaites, S. Tilav, K. Tollefson, C. Tönnis, S. Toscano, D. Tosi, Alexandra Trettin, Martin Unland Elorrieta, Anuj Kumar Upadhyay, K. Upshaw, A. Vaidyanathan, N. Valtonen-Mattila, J. Vandenbroucke, N. van Eijndhoven, D. Vannerom, J. van Santen, J. Vara, F. Varsi, J. Veitch-Michaelis, M. Venugopal, M. Vereecken, Sebastian Vergara Carrasco, S. Verpoest, D. Veske, A. Vijai, C. Walck, P. Weigel, A. Weindl, J. Weldert, Alex Wen, Chris Wendt, J. Werthebach, Mark Weyrauch, N. Whitehorn, C. H. Wiebusch, D. R. Williams, Lucas Witthaus, M. Wolf, G. Wrede, X. W. Xu, J. P. Yáñez, E. Yildizci, S. Yoshida, R. Young, F. Yu, A. Zegarelli, Z. Zhang, P. Zhelnin, Perri Zilberman, Melany Zimmerman, IceCube Collaboration
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Résumé fourni par la source
We present a search for the diffuse extremely-high-energy neutrino flux using 12.6 years of IceCube data. The nonobservation of neutrinos with energies well above 10 PeV constrains the all-flavor neutrino flux at 1018 eV to a level of $E^2Φ_{ν_{e}}$+$ν_μ$$+ν_τ≃$10$^{−8}$ GeV cm$^{-2}$ s-1 sr$^{-1}$, the most stringent limit to date. Using these data, we constrain the proton fraction of ultrahigh-energy cosmic rays (UHECRs) above ≃30 EeV to be ≲70% (at 90% CL) if the cosmological evolution of the sources is comparable to or stronger than the star formation rate. This is the first result to disfavor the “proton-only” hypothesis for UHECR in this evolution regime using neutrino data. This result complements direct air-shower measurements by being insensitive to uncertainties associated with hadronic interaction models. We also evaluate the tension between IceCube’s nonobservation and the ∼200 PeV KM3NeT neutrino candidate (KM3-230213A), finding it to be ∼2.9σ based on a joint-livetime fit between neutrino datasets.
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Sujets associés
Astrophysics and Cosmic PhenomenaComputational Physics and Python ApplicationsNeutrino Physics Research