Cross section for supernova axion observation in neutrino water Cherenkov detectors
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arXiv
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| Autores principales: | , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2023
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| _version_ | 1866913183763005440 |
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| author | Carenza, Pierluca Co', Giampaolo Giannotti, Maurizio Lella, Alessandro Lucente, Giuseppe Mirizzi, Alessandro Rauscher, Thomas |
| author_facet | Carenza, Pierluca Co', Giampaolo Giannotti, Maurizio Lella, Alessandro Lucente, Giuseppe Mirizzi, Alessandro Rauscher, Thomas |
| contents | Axions coupled to nucleons might be copiously emitted from core-collapse supernovae (SNe). If the axion-nucleon coupling is strong enough, axions would be emitted from the SN as a burst and, reaching Earth, may excite the oxygen nuclei in water Cherenkov detectors (${}^{16}{\rm O} + a \to {}^{16}{\rm O}^{*}$). This process will be followed by decay(s) of the excited state resulting in an emission of photons and thus providing a possibility for a direct detection of axions from a Galactic SN in large underground neutrino Cherenkov detectors. Motivated by this possibility, we present an updated calculation of axion-oxygen cross section obtained by using self-consistent continuum Random Phase Approximation. We calculate the branching ratio of the oxygen nucleus de-excitation into gamma-rays, neutrons, protons and $α$-particles and also consider photon emission from secondary nuclei to compute a total $γ$ spectrum created when axions excite ${}^{16}{\rm O}$. These results are used to revisit the detectability of axions from SN 1987A in Kamiokande-II. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2306_17055 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Cross section for supernova axion observation in neutrino water Cherenkov detectors Carenza, Pierluca Co', Giampaolo Giannotti, Maurizio Lella, Alessandro Lucente, Giuseppe Mirizzi, Alessandro Rauscher, Thomas High Energy Physics - Phenomenology High Energy Astrophysical Phenomena Nuclear Theory Axions coupled to nucleons might be copiously emitted from core-collapse supernovae (SNe). If the axion-nucleon coupling is strong enough, axions would be emitted from the SN as a burst and, reaching Earth, may excite the oxygen nuclei in water Cherenkov detectors (${}^{16}{\rm O} + a \to {}^{16}{\rm O}^{*}$). This process will be followed by decay(s) of the excited state resulting in an emission of photons and thus providing a possibility for a direct detection of axions from a Galactic SN in large underground neutrino Cherenkov detectors. Motivated by this possibility, we present an updated calculation of axion-oxygen cross section obtained by using self-consistent continuum Random Phase Approximation. We calculate the branching ratio of the oxygen nucleus de-excitation into gamma-rays, neutrons, protons and $α$-particles and also consider photon emission from secondary nuclei to compute a total $γ$ spectrum created when axions excite ${}^{16}{\rm O}$. These results are used to revisit the detectability of axions from SN 1987A in Kamiokande-II. |
| title | Cross section for supernova axion observation in neutrino water Cherenkov detectors |
| topic | High Energy Physics - Phenomenology High Energy Astrophysical Phenomena Nuclear Theory |
| url | https://arxiv.org/abs/2306.17055 |