RT Journal Article
T1 Testing effects of Lorentz invariance violation in the propagation of astroparticles with the Pierre Auger Observatory
A1 Parente Bermúdez, Gonzalo
A1 Zehrer, Lukas
A1 Abreu, P.
A1 Álvarez Muñiz, Jaime
K1 Cosmic ray experiments
K1 Ultra-high-energy cosmic radiation
K1 Physics of the early universe
AB Lorentz invariance violation (LIV) is often described by dispersion relations of the form Ei2 = mi2+pi2+δi,n E2+n with delta different based on particle type i, with energy E, momentum p and rest mass m. Kinematics and energy thresholds of interactions are modified once the LIV terms become comparable to the squared masses of the particles involved. Thus, the strongest constraints on the LIV coefficients δi,n tend to come from the highest energies. At sufficiently high energies, photons produced by cosmic ray interactions as they propagate through the Universe could be subluminal and unattenuated over cosmological distances. Cosmic ray interactions can also be modified and lead to detectable fingerprints in the energy spectrum and mass composition observed on Earth. The data collected at the Pierre Auger Observatory are therefore possibly sensitive to both the electromagnetic and hadronic sectors of LIV. In this article, we explore these two sectors by comparing the energy spectrum and the composition of cosmic rays and the upper limits on the photon flux from the Pierre Auger Observatory with simulations including LIV. Constraints on LIV parameters depend strongly on the mass composition of cosmic rays at the highest energies. For the electromagnetic sector, while no constraints can be obtained in the absence of protons beyond 1019 eV, we obtain δγ,0 > -10-21, δγ,1 > -10-40 eV-1 and δγ,2 > -10-58 eV-2 in the case of a subdominant proton component up to 1020 eV. For the hadronic sector, we study the best description of the data as a function of LIV coefficients and we derive constraints in the hadronic sector such as δhad,0 < 10-19, δhad,1 < 10-38 eV-1 and δhad,2 < 10-57 eV-2 at 5σ CL.
PB IOP Publishing
YR 2022
FD 2022-01-17
LK http://hdl.handle.net/10347/32676
UL http://hdl.handle.net/10347/32676
LA eng
NO The Pierre Auger collaboration et al. Testing effects of Lorentz invariance violation in the propagation of astroparticles with the Pierre Auger Observatory, JCAP01(2022)023
NO The successful installation, commissioning, and operation of the Pierre Auger Observatorywould not have been possible without the strong commitment and effort from the technicaland administrative staff in Malargüe. We are very grateful to the following agencies andorganizations for financial support: Argentina — Comisión Nacional de Energía Atómica;Agencia Nacional de Promoción Científica y Tecnológica (ANPCyT); Consejo Nacional deInvestigaciones Científicas y Técnicas (CONICET); Gobierno de la Provincia de Mendoza;Municipalidad de Malargüe; NDM Holdings and Valle Las Leñas; in gratitude for their continuing cooperation over land access; Australia — the Australian Research Council; Belgium— Fonds de la Recherche Scientifique (FNRS); Research Foundation Flanders (FWO); Brazil— Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq); Financiadorade Estudos e Projetos (FINEP); Fundação de Amparo à Pesquisa do Estado de Rio deJaneiro (FAPERJ); São Paulo Research Foundation (FAPESP) Grants No. 2019/10151-2,No. 2010/07359-6 and No. 1999/05404-3; Ministério da Ciência, Tecnologia, Inovações eComunicações (MCTIC); Czech Republic — Grant No. MSMT CR LTT18004, LM2015038,LM2018102, CZ.02.1.01/0.0/0.0/16_013/0001402, CZ.02.1.01/0.0/0.0/18_046/0016010 andCZ.02.1.01/0.0/0.0/17_049/0008422; France — Centre de Calcul IN2P3/CNRS; Centre National de la Recherche Scientifique (CNRS); Conseil Régional Ile-de-France; DépartementPhysique Nucléaire et Corpusculaire (PNC-IN2P3/CNRS); Département Sciences de l’Univers(SDU-INSU/CNRS); Institut Lagrange de Paris (ILP) Grant No. LABEX ANR-10-LABX-63within the Investissements d’Avenir Programme Grant No. ANR-11-IDEX-0004-02; Germany— Bundesministerium für Bildung und Forschung (BMBF); Deutsche Forschungsgemeinschaft(DFG); Finanzministerium Baden-Württemberg; Helmholtz Alliance for Astroparticle Physics(HAP); Helmholtz-Gemeinschaft Deutscher Forschungszentren (HGF); Ministerium für Innovation, Wissenschaft und Forschung des Landes Nordrhein-Westfalen; Ministerium für Wissenschaft, Forschung und Kunst des Landes Baden-Württemberg; Italy — Istituto Nazionaledi Fisica Nucleare (INFN); Istituto Nazionale di Astrofisica (INAF); Ministero dell’Istruzione,dell’Università e della Ricerca (MIUR); CETEMPS Center of Excellence; Ministero degliAffari Esteri (MAE); México — Consejo Nacional de Ciencia y Tecnología (CONACYT)No. 167733; Universidad Nacional Autónoma de México (UNAM); PAPIIT DGAPA-UNAM;The Netherlands — Ministry of Education, Culture and Science; Netherlands Organisationfor Scientific Research (NWO); Dutch national e-infrastructure with the support of SURFCooperative; Poland — Ministry of Education and Science, grant No. DIR/WK/2018/11;National Science Centre, Grants No. 2016/22/M/ST9/00198, 2016/23/B/ST9/01635, and2020/39/B/ST9/01398; Portugal — Portuguese national funds and FEDER funds withinPrograma Operacional Factores de Competitividade through Fundação para a Ciência ea Tecnologia (COMPETE); Romania — Ministry of Research, Innovation and Digitization, CNCS/CCCDI — UEFISCDI, projects PN19150201/16N/2019, PN1906010, TE128and PED289, within PNCDI III; Slovenia — Slovenian Research Agency, grants P1-0031,P1-0385, I0-0033, N1-0111; Spain — Ministerio de Economía, Industria y Competitividad(FPA2017-85114-P and PID2019-104676GB-C32), Xunta de Galicia (ED431C 2017/07), Juntade Andalucía (SOMM17/6104/UGR, P18-FR-4314) Feder Funds, RENATA Red NacionalTemática de Astropartículas (FPA2015-68783-REDT) and María de Maeztu Unit of Excellence(MDM-2016-0692); U.S.A. — Department of Energy, Contracts No. DE-AC02-07CH11359,No. DE-FR02-04ER41300, No. DE-FG02-99ER41107 and No. DE-SC0011689; National ScienceFoundation, Grant No. 0450696; The Grainger Foundation; Marie Curie-IRSES/EPLANET;European Particle Physics Latin American Network; and UNESCO.
DS Minerva
RD 30 abr 2026