Limits on the Lorentz Invariance Violation from UHECR astrophysics.
LANG, Rodrigo Guedes; MARTÍNEZ-HUERTA, Humberto; SOUZA, Vitor de.
LANG, Rodrigo Guedes; MARTÍNEZ-HUERTA, Humberto; SOUZA, Vitor de.
 Abstract: In this paper, the Lorentz invariance violation (LIV) is introduced in the calculations of photon propagation in the universe. LIV is considered in the photon sector, and the mean-free path of the $gamma gamma o {e} {+}{e} {-}$ interaction is calculated. The corresponding photon horizon, including LIV effects, is used to predict major changes in the propagation of photons with energy above 1018 eV. The flux of GZK photons on Earth, considering LIV, is calculated for several source models of ultra-high-energy cosmic rays (UHECRs). The predicted flux of GZK gamma-rays is compared to the new upper limits on the photon flux obtained by the Pierre Auger Observatory in order to impose upper limits on the LIV coefficients of order n = 0, 1, and 2. The limits on the LIV coefficients derived here are more realistic than previous works and in some cases more restrictive. The analysis resulted in LIV upper limits in the photon sector of ${delta }_{gamma ,0} {mathrm{limit}}sim -{10} {-20}$, ${delta }_{gamma ,1} {mathrm{limit}}sim -{10} {-38},{mathrm{eV}} {-1}$, and ${delta }_{gamma ,2} {mathrm{limit}}sim -{10} {-56},{mathrm{eV}} {-2}$ in the astrophysical scenario, which best describes UHECR data. | |
| Astrophysical Journal |
| v. 853, n. 1, p. 23-1-23-10 - Ano: 2018 |
| Fator de Impacto: 5,533 |
| http://dx.doi.org/10.3847/1538-4357/aa9f2c |  @article={002869156,author = {LANG, Rodrigo Guedes; MARTÍNEZ-HUERTA, Humberto; SOUZA, Vitor de.},title={Limits on the Lorentz Invariance Violation from UHECR astrophysics},journal={Astrophysical Journal},note={v. 853, n. 1, p. 23-1-23-10},year={2018}} |