pp solar neutrinos at DARWIN
| Autor: | André de Gouvêa, Emma McGinness, Ivan Martinez-Soler, Yuber F. Perez-Gonzalez |
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| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Physical Review Physical Review D, 2022, Vol.106(9) [Peer Reviewed Journal] |
| ISSN: | 2470-0029 2470-0010 |
| Popis: | The DARWIN collaboration recently argued that DARWIN (DARk matter WImp search with liquid xenoN) can collect, via neutrino--electron scattering, a large, useful sample of solar $pp$-neutrinos, and measure their survival probability with sub-percent precision. We explore the physics potential of such a sample in more detail. We estimate that, with 300 ton-years of data, DARWIN can also measure, with the help of current solar neutrino data, the value of $\sin^2\theta_{13}$, with the potential to exclude $\sin^2\theta_{13}=0$ close to the three-sigma level. We explore in some detail how well DARWIN can constrain the existence of a new neutrino mass-eigenstate $\nu_4$ that is quasi-mass-degenerate with $\nu_1$ and find that DARWIN's sensitivity supersedes that of all current and near-future searches for new, very light neutrinos. In particular, DARWIN can test the hypothesis that $\nu_1$ is a pseudo-Dirac fermion as long as the induced mass-squared difference is larger than $10^{-13}$ eV$^2$, one order of magnitude more sensitive than existing constraints. Throughout, we allowed for the hypotheses that DARWIN is filled with natural xenon or $^{136}$Xe-depleted xenon. Comment: 14 pages, 7 figures |
| Databáze: | OpenAIRE |
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