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The axion shield
We investigate the propagation of a charged particle in a spatially constant, but time dependent, pseudoscalar background. Physically this pseudoscalar background could be provided by a relic axion density. The background leads to an explicit breaking of Lorentz invariance; as a consequence the proc...
| Autores principales: | , , , |
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| Lenguaje: | eng |
| Publicado: |
2009
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1016/j.physletb.2010.01.005 http://cds.cern.ch/record/1229344 |
| _version_ | 1780918462059642880 |
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| author | Andrianov, A.A. Espriu, D. Mescia, F. Renau, A. |
| author_facet | Andrianov, A.A. Espriu, D. Mescia, F. Renau, A. |
| author_sort | Andrianov, A.A. |
| collection | CERN |
| description | We investigate the propagation of a charged particle in a spatially constant, but time dependent, pseudoscalar background. Physically this pseudoscalar background could be provided by a relic axion density. The background leads to an explicit breaking of Lorentz invariance; as a consequence the process p-> p gamma is possible and the background acts as a shield against extremely energetic cosmic rays, an effect somewhat similar to the GZK cut-off effect. The effect is model independent and can be computed exactly. The hypothetical detection of the photons radiated via this mechanism would provide an indirect way of verifying the cosmological relevance of axions. |
| id | cern-1229344 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2009 |
| record_format | invenio |
| spelling | cern-12293442023-03-12T20:50:07Zdoi:10.1016/j.physletb.2010.01.005http://cds.cern.ch/record/1229344engAndrianov, A.A.Espriu, D.Mescia, F.Renau, A.The axion shieldParticle Physics - PhenomenologyWe investigate the propagation of a charged particle in a spatially constant, but time dependent, pseudoscalar background. Physically this pseudoscalar background could be provided by a relic axion density. The background leads to an explicit breaking of Lorentz invariance; as a consequence the process p-> p gamma is possible and the background acts as a shield against extremely energetic cosmic rays, an effect somewhat similar to the GZK cut-off effect. The effect is model independent and can be computed exactly. The hypothetical detection of the photons radiated via this mechanism would provide an indirect way of verifying the cosmological relevance of axions.We investigate the propagation of a charged particle in a spatially constant, but time dependent, pseudoscalar background. Physically this pseudoscalar background could be provided by a relic axion density. The background leads to an explicit breaking of Lorentz invariance; as a consequence the process p→pγ is possible and the background acts as a shield against extremely energetic cosmic rays, an effect somewhat similar to the GZK cut-off effect. The effect is model independent and can be computed exactly. The hypothetical detection of the photons radiated via this mechanism would provide an indirect way of verifying the cosmological relevance of axions.We investigate the propagation of a charged particle in a spatially constant, but time dependent, pseudoscalar background. Physically this pseudoscalar background could be provided by a relic axion density. The background leads to an explicit breaking of Lorentz invariance/ as a consequence the process p-> p gamma is possible and the background acts as a shield against extremely energetic cosmic rays, an effect somewhat similar to the GZK cut-off effect. The effect is model independent and can be computed exactly. The hypothetical detection of the photons radiated via this mechanism would provide an indirect way of verifying the cosmological relevance of axions.arXiv:0912.3151ICCUB-09-338ICCUB-09-438oai:cds.cern.ch:12293442009-12-17 |
| spellingShingle | Particle Physics - Phenomenology Andrianov, A.A. Espriu, D. Mescia, F. Renau, A. The axion shield |
| title | The axion shield |
| title_full | The axion shield |
| title_fullStr | The axion shield |
| title_full_unstemmed | The axion shield |
| title_short | The axion shield |
| title_sort | axion shield |
| topic | Particle Physics - Phenomenology |
| url | https://dx.doi.org/10.1016/j.physletb.2010.01.005 http://cds.cern.ch/record/1229344 |
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