Abstract
Current knowledge of the relative abundances and the energy spectra of the elemental mass groups of cosmic rays in the 10 TeV - 1 PeV interval is uncertain. This situation prevents carrying out precision tests that may lead to distinguish among the existing hypotheses on the origin and propagation of TeV cosmic rays in the galaxy. In order to learn more about the mass composition of these particles, we have employed HAWC data from hadron induced air showers in order to determine the spectra of three mass groups of cosmic rays: protons, helium and heavy nuclei with Z > 2. The energy spectra were estimated by using the Gold unfolding technique on the 2D distribution of the lateral shower age against the estimated primary energy of events with arrival zenith angles smaller than 45 degrees. The study was carried out based on simulations using the QGSJET-II-04 model. Results are presented for primary cosmic-ray energies from 10 TeV to 251 TeV. They reveal that the aforementioned cosmic ray spectra exhibit fine structures within the above primary energy range.
Recommended Citation
J. C. Arteaga-Velazquez and J. C. Arteaga-Velazquez and A. U. Abeysekara and A. Albert and R. Alfaro and C. Alvarez and J. D. Álvarez and J. R. Angeles Camacho and K. P. Arunbabu and D. Avila Rojas and H. A. Ayala Solares and R. Babu and V. Baghmanyan and A. S. Barber and J. Becerra Gonzalez and E. Belmont-Moreno and S. Y. BenZvi and D. Berley and C. Brisbois and K. S. Caballero-Mora and T. Capistran and A. Carraminana and S. Casanova and O. Chaparro-Amaro and U. Cotti and J. Cotzomi and S. Coutino de Leon and E. De la Fuente and C. de Leon and L. Diaz-Cruz and R. Diaz Hernandez and J. C. Diaz-Velez and B. L. Dingus and M. Durocher and M. A. Durocher and R. W. Ellsworth and K. Engel and C. Espinoza and K. L. Fan and K. Fang and M. Fernandez Alonso and B. Fick and H. Fleischhack and J. L. Flores and N. I. Fraija and D. Garcia and J. A. Garcia-Gonzalez and J. L. Garcia-Luna and G. Garcia-Torales and F. Garfias and G. Giacinti and H. Goksu and M. M. Gonzalez and J. A. Goodman and J. P. Harding and S. Hernandez and I. Herzog and J. Hinton and B. Hona and D. Huang and F. Hueyotl-Zahuantitla and C. M. Hui and B. Humensky and P. Huntemeyer and A. Iriarte and A. Jardin-Blicq and H. Jhee and V. Joshi and D. Kieda and G. J. Kunde and S. Kunwar and A. Lara and J. Lee and W. H. Lee and D. Lennarz and H. Leon Vargas and J. Linnemann and A. L. Longinotti and R. Lopez-Coto and G. Luis-Raya and J. Lundeen and K. Malone and V. Marandon and O. Martinez and I. Martinez-Castellanos and H. Martinez-Huerta and J. Martinez-Castro and J. A. Matthews and J. McEnery and P. Miranda-Romagnoli and J. A. Morales-Soto and E. Moreno and M. Mostafa and A. Nayerhoda and L. Nellen and M. Newbold and M. U. Nisa and R. Noriega-Papaqui and L. Olivera-Nieto and N. Omodei and A. Peisker and Y. Perez Araujo and E. G. Perez-Perez and C. D. Rho and C. Riviere and D. Rosa-Gonzalez and E. Ruiz-Velasco and J. Ryan and H. Salazar and F. Salesa Greus and A. Sandoval and M. Schneider and H. Schoorlemmer and J. Serna-Franco and G. Sinnis and A. J. Smith and R. W. Springer and P. Surajbali and I. Taboada and M. Tanner and K. Tollefson and I. Torres and R. Torres-Escobedo and R. Turner and F. Urena-Mena and L. Villasenor and X. Wang and I. J. Watson and T. Weisgarber and F. Werner and E. Willox and J. Wood and G. B. Yodh and A. Zepeda and H. Zhou, "HAWC Measurements Of The Energy Spectra Of Cosmic Ray Protons, Helium And Heavy Nuclei In The TeV Range," Proceedings of Science, vol. 395, article no. 374, Sissa Medialab Srl, Mar 2022.
The definitive version is available at https://doi.org/10.48550/arXiv.2108.03208
Department(s)
Physics
International Standard Serial Number (ISSN)
1824-8039
Document Type
Article - Conference proceedings
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2025 Sissa Medialab Srl, All rights reserved.
Publication Date
18 Mar 2022
Comments
National Science Foundation, Grant PRODEPSEP UDG-CA-499