| THE PHYSICS OF ELEMENTARY PARTICLES AND FIELDS |
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Axion-Photon Conversion of LHAASO Multi-TeV and PeV Photons |
| Guangshuai Zhang1 and Bo-Qiang Ma1,2,3* |
1School of Physics, Peking University, Beijing 100871, China
2Center for High Energy Physics, Peking University, Beijing 100871, China
3Collaborative Innovation Center of Quantum Matter, Beijing 100871, China
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| Cite this article: |
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Guangshuai Zhang and Bo-Qiang Ma 2023 Chin. Phys. Lett. 40 011401 |
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Abstract The Large High Altitude Air Shower Observatory (LHAASO) has reported the detection of a large number of multi-TeV-scale photon events also including several PeV-scale gamma-ray-photon events with energy as high as 1.4 PeV. The possibility that some of these events may have extragalactic origins is not yet excluded. Here we propose a mechanism for the traveling of very-high-energy and ultra-high-energy photons based upon the axion-photon conversion scenario, which allows extragalactic above-threshold photons to be detected by observers on the Earth. We show that the axion-photon conversation can serve as an alternative mechanism, besides the threshold anomaly due to Lorentz invariance violation, for the very-high-energy features of the newly observed gamma ray burst GRB 221009A.
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Received: 24 October 2022
Published: 21 December 2022
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| PACS: |
14.80.Va
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(Axions and other Nambu-Goldstone bosons (Majorons, familons, etc.))
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11.30.Cp
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(Lorentz and Poincaré invariance)
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12.60.-i
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(Models beyond the standard model)
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98.70.Rz
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(γ-ray sources; γ-ray bursts)
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