Paleo-Detectors for Galactic Supernova Neutrinos
| Autor: | Baum, Sebastian, Edwards, Thomas D. P., Kavanagh, Bradley J., Stengel, Patrick, Drukier, Andrzej K., Freese, Katherine, Górski, Maciej, Weniger, Christoph |
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| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | Phys. Rev. D 101, 103017 (2020) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevD.101.103017 |
| Popis: | Paleo-detectors are a proposed experimental technique in which one would search for traces of recoiling nuclei in ancient minerals. Natural minerals on Earth are as old as $\mathcal{O}(1)\,$Gyr and, in many minerals, the damage tracks left by recoiling nuclei are also preserved for timescales long compared to 1 Gyr once created. Thus, even reading out relatively small target samples of order 100 g, paleo-detectors would allow one to search for very rare events thanks to the large exposure, $\varepsilon \sim 100\,{\rm g}\,{\rm Gyr} = 10^5\,{\rm t}\,{\rm yr}$. Here, we explore the potential of paleo-detectors to measure nuclear recoils induced by neutrinos from galactic core collapse supernovae. We find that they would not only allow for a direct measurement of the average core collapse supernova rate in the Milky Way, but would also contain information about the time-dependence of the local supernova rate over the past $\sim$1 Gyr. Since the supernova rate is thought to be directly proportional to the star formation rate, such a measurement would provide a determination of the local star formation history. We investigate the sensitivity of paleo-detectors to both a smooth time evolution and an enhancement of the core collapse supernova rate on relatively short timescales, as would be expected for a starburst period in the local group. Comment: 15 pages, 5 figures. code available at https://github.com/tedwards2412/SN-paleology (archived at https://doi.org/10.5281/zenodo.3066206 ) v2: matches the published version |
| Databáze: | arXiv |
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