Approaches to photon absorption in a Lorentz invariance violation scenario
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arXiv
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| Main Authors: | , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866909331998375936 |
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| author | Carmona, J. M. Cortés, J. L. Rescic, F. Reyes, M. A. Terzić, T. Vrban, F. I. |
| author_facet | Carmona, J. M. Cortés, J. L. Rescic, F. Reyes, M. A. Terzić, T. Vrban, F. I. |
| contents | Very high-energy astrophysical gamma rays suffer a suppression of their flux along their propagation due to their interaction, through the $γγ\to e^+e^-$ pair-production process, with the soft photon backgrounds present in the Universe. We examine the Universe's transparency to gamma rays within a Lorentz Invariance Violation (LIV) framework, focusing on photon subluminal quadratic corrections driven by a high-energy scale. Based on an explicit calculation, we provide a new expression for the cross section that overcomes the limitations of previous approaches and refines existing constraints for the LIV scale, while we introduce a new approximation that may be useful in LIV scenarios beyond effective field theory. These improvements appear essential for setting constraints on LIV effects with future observations at ultra-high energies, where previous approximations may fall short. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_07842 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Approaches to photon absorption in a Lorentz invariance violation scenario Carmona, J. M. Cortés, J. L. Rescic, F. Reyes, M. A. Terzić, T. Vrban, F. I. High Energy Physics - Phenomenology High Energy Astrophysical Phenomena General Relativity and Quantum Cosmology Very high-energy astrophysical gamma rays suffer a suppression of their flux along their propagation due to their interaction, through the $γγ\to e^+e^-$ pair-production process, with the soft photon backgrounds present in the Universe. We examine the Universe's transparency to gamma rays within a Lorentz Invariance Violation (LIV) framework, focusing on photon subluminal quadratic corrections driven by a high-energy scale. Based on an explicit calculation, we provide a new expression for the cross section that overcomes the limitations of previous approaches and refines existing constraints for the LIV scale, while we introduce a new approximation that may be useful in LIV scenarios beyond effective field theory. These improvements appear essential for setting constraints on LIV effects with future observations at ultra-high energies, where previous approximations may fall short. |
| title | Approaches to photon absorption in a Lorentz invariance violation scenario |
| topic | High Energy Physics - Phenomenology High Energy Astrophysical Phenomena General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2404.07842 |