Ultra-High-Energy Cosmic Rays: The Intersection of the Cosmic and Energy   Frontiers

A. Coleman (1); J. Eser (2); E. Mayotte (3); F. Sarazin (3); F. G.; Schr\"oder (1,4); D. Soldin (1); T. M. Venters (5); R. Aloisio (6); J.; Alvarez-Mu\~niz (7); R. Alves Batista (8); D. Bergman (9); M. Bertaina (10),; L. Caccianiga (11); O. Deligny (12); H. P. Dembinski (13); P. B. Denton (14),; A. di Matteo (15); N. Globus (16,17); J. Glombitza (18); G. Golup (19); A.; Haungs (4); J. R. H\"orandel (20); T. R. Jaffe (21); J. L. Kelley (22); J. F.; Krizmanic (5); L. Lu (22); J. N. Matthews (9); I. Mari\c{s} (23); R. Mussa; (15); F. Oikonomou (24); T. Pierog (4); E. Santos (25); P. Tinyakov (23); Y.; Tsunesada (26); M. Unger (4); A. Yushkov (25); M. G. Albrow (27); L. A.; Anchordoqui (28); K. Andeen (29); E. Arnone (10,15); D. Barghini (10,15); E.; Bechtol (22); J. A. Bellido (30); M. Casolino (31,32); A. Castellina (15,33),; L. Cazon (7); R. Concei\c{c}\~ao (34); R. Cremonini (35); H. Dujmovic (4); R.; Engel (4,36); G. Farrar (37); F. Fenu (10,15); S. Ferrarese (10); T. Fujii; (38); D. Gardiol (33); M. Gritsevich (39,40); P. Homola (41); T. Huege; (4,42); K. -H. Kampert (43); D. Kang (4); E. Kido (44); P. Klimov (45); K.; Kotera (42,46); B. Kozelov (47); A. Leszczy\'nska (1,36); J. Madsen (22); L.; Marcelli (32); M. Marisaldi (48); O. Martineau-Huynh (49); S. Mayotte (3); K.; Mulrey (20); K. Murase (50,51); M. S. Muzio (50); S. Ogio (26); A. V. Olinto; (2); Y. Onel (52); T. Paul (28); L. Piotrowski (31); M. Plum (53); B. Pont; (20); M. Reininghaus (4); B. Riedel (22); F. Riehn (34); M. Roth (4); T. Sako; (54); F. Schl\"uter (4,55); D. Shoemaker (56); J. Sidhu (57); I. Sidelnik; (19); C. Timmermans (20,58); O. Tkachenko (4); D. Veberi\v{c} (4); S.; Verpoest (59); V. Verzi (32); J. V\'icha (25); D. Winn (52); E. Zas (7); M.; Zotov (45) ((1) Bartol Research Institute; Department of Physics and; Astronomy; University of Delaware; Newark DE; USA; (2) Department of; Astronomy; Astrophysics; University of Chicago; Chicago IL; USA; (3); Department of Physics; Colorado School of Mines; Golden CO; USA; (4); Institute for Astroparticle Physics; Karlsruhe Institute of Technology (KIT),; Karlsruhe; Germany; (5) Astroparticle Physics Laboratory; NASA Goddard Space; Flight Center; Greenbelt; MD; USA; (6) Gran Sasso Science Institute (GSSI),; L'Aquila; Italy; (7) Instituto Galego de F\'isica de Altas Enerx\'ias; (IGFAE); University of Santiago de Compostela; Santiago; Spain; (8) Instituto; de F\'isica Te\'orica UAM/CSIC; U. Aut\'onoma de Madrid; Madrid; Spain; (9); Department of Physics; Astronomy; University of Utah; Salt Lake UT; USA,; (10) Dipartimento di Fisica; Universit\`a degli studi di Torino; Torino,; Italy; (11) Istituto Nazionale di Fisica Nucleare - Sezione di Milano; Italy,; (12) Institut de Physique Nucl\'eaire d'Orsay (IPN); Orsay; France; (13); Faculty of Physics; TU Dortmund University; Germany; (14) High Energy Theory; Group; Physics Department; Brookhaven National Laboratory; Upton NY; USA,; (15) Istituto Nazionale di Fisica Nucleare (INFN); sezione di Torino; Turin,; Italy; (16) Department of Astronomy; Astrophysics; University of; California; Santa Cruz CA; USA; (17) Center for Computational Astrophysics,; Flatiron Institute; Simons Foundation; New York NY; USA; (18) III. Physics; Institute A; RWTH Aachen University; Aachen; Germany; (19) Centro At\'omico; Bariloche; CNEA; CONICET; Bariloche; Argentina; (20) Department of; Astrophysics/IMAPP; Radboud University; Nijmegen; The Netherlands; (21); HEASARC Office; NASA Goddard Space Flight Center; Greenbelt; MD; USA; (22); WIPAC / University of Wisconsin; Madison WI; USA; (23) Universit\'e Libre de; Bruxelles (ULB); Brussels; Belgium; (24) Institutt for fysikk; Norwegian; University of Science; Technology (NTNU); Trondheim; Norway; (25); Institute of Physics of the Czech Academy of Sciences; Prague; Czech; Republic; (26) Nambu Yoichiro Institute for Theoretical; Experimental; Physics; Osaka City University; Osaka; Japan; (27) Fermi National Accelerator; Laboratory; USA; (28) Lehman College; City University of New York; Bronx NY,; USA; (29) Department of Physics; Marquette University; Milwaukee WI; USA,; (30) The University of Adelaide; Adelaide; Australia; (31) RIKEN Cluster for; Pioneering Research; Advanced Science Institute (ASI); Wako Saitama; Japan,; (32) INFN; sezione di Roma "Tor Vergata"; Roma; Italy; (33) Osservatorio; Astrofisico di Torino (INAF); INFN; Torino; Italy; (34) Laborat\'orio de; Instrumenta\c{c}\~ao e F\'isica Experimental de Part\'iculas; Instituto; Superior T\'ecnico; Lisbon; Portugal; (35) ARPA Piemonte; Turin; Italy; (36); Institute of Experimental Particle Physics; Karlsruhe Institute of Technology; (KIT); Karlsruhe; Germany; (37) Center for Cosmology; Particle Physics,; New York University; New York NY; USA; (38) Hakubi Center for Advanced; Research; Kyoto University; Kyoto; Japan; (39) Finnish Geospatial Research; Institute (FGI); Espoo; Finland; (40) Department of Physics; University of; Helsinki; Helsinki; Finland; (41) Institute of Nuclear Physics Polish Academy; of Sciences; Krak\'ow; Poland; (42) Astrophysical Institute; Vrije; Universiteit Brussel; Brussels; Belgium; (43) Department of Physics,; University of Wuppertal; Wuppertal; Germany; (44) RIKEN Cluster for; Pioneering Research; Astrophysical Big Bang Laboratory (ABBL); Saitama,; Japan; (45) Skobeltsyn Institute of Nuclear Physics (SINP); Lomonosov Moscow; State University; Moscow; Russia; (46) Institut d'Astrophysique de Paris; (IAP); Paris; France; (47) Polar Geophysical Institute; Apatity; Russia; (48); Birkeland Centre for Space Science; Department of Physics; University of; Bergen; Bergen; Norway; (49) Sorbonne Universit\'e; CNRS/IN2P3; LPNHE,; CNRS/INSU; IAP; Paris; France; (50) Pennsylvania State University; University; Park PA; USA; (51) Yukawa Institute for Theoretical Physics (YITP); Kyoto; University; Kyoto; Japan; (52) Department of Physics; Astronomy,; University of Iowa; Iowa City IA; USA; (53) South Dakota School of Mines and; Technology; Rapid City SD; USA; (54) ICRR; University of Tokyo; Kashiwa,; Chiba; Japan; (55) Instituto de Tecnolog\'ias en Detecci\'on y; Astropart\'iculas; Universidad Nacional de San Mart\'in; Buenos Aires,; Argentina; (56) LIGO Laboratory; Massachusetts Institute of Technology,; Cambridge; Massachusetts; USA; (57) Cleveland Clinic; Cleveland OH; USA; (58); National Institute for Subatomic Physics (NIKHEF); Amsterdam; The; Netherlands; (59) Department of Physics; Astronomy; University of Gent,; Gent; Belgium)

arXiv:2205.05845·astro-ph.HE·April 18, 2023

Ultra-High-Energy Cosmic Rays: The Intersection of the Cosmic and Energy Frontiers

A. Coleman (1), J. Eser (2), E. Mayotte (3), F. Sarazin (3), F. G., Schr\"oder (1,4), D. Soldin (1), T. M. Venters (5), R. Aloisio (6), J., Alvarez-Mu\~niz (7), R. Alves Batista (8), D. Bergman (9), M. Bertaina (10),, L. Caccianiga (11), O. Deligny (12), H. P. Dembinski (13)

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TL;DR

This white paper discusses the scientific questions and strategic plans for studying ultra-high-energy cosmic rays, aiming to guide future research in high-energy physics over the next two decades.

Contribution

It provides a comprehensive overview of the key scientific questions and strategic recommendations for UHECR research within the context of long-term planning.

Findings

01

Identifies major scientific questions in UHECR research

02

Proposes strategic approaches for future investigations

03

Aligns UHECR research with broader high-energy physics goals

Abstract

The present white paper is submitted as part of the "Snowmass" process to help inform the long-term plans of the United States Department of Energy and the National Science Foundation for high-energy physics. It summarizes the science questions driving the Ultra-High-Energy Cosmic-Ray (UHECR) community and provides recommendations on the strategy to answer them in the next two decades.

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