Saved in:
| Main Author: | |
|---|---|
| Format: | Preprint |
| Published: |
2024
|
| Subjects: | |
| Online Access: | https://arxiv.org/abs/2403.19532 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866911818522296320 |
|---|---|
| author | Cookman, Daniel |
| author_facet | Cookman, Daniel |
| contents | The SNO+ experiment is a large multi-purpose neutrino detector, currently filled with liquid scintillator. For the first time in a single experiment, SNO+ is able to measure the neutrino oscillation parameters $θ_{12}$ and $Δm^{2}_{21}$ simultaneously through both reactor anti-neutrinos and $^{8}B$ solar neutrinos. The latter approach is demonstrated here, with an analysis of an initial 80 days of scintillator phase data. A Bayesian statistical approach via Markov Chain Monte Carlo is used, allowing for the simultaneous fitting of the oscillation parameters, $^{8}B$ neutrino flux, background components with constraints, and systematic uncertainties. The neutrino oscillation parameter $θ_{12}$ was measured to be $38.9^{\circ+8.0^{\circ}}_{-7.9^{\circ}}$, assuming the current global fit flux of $^{8}B$ solar neutrinos. This is consistent with the current global fit result for $θ_{12}$. A sensitivity study shows that this measurement is statistics-limited, and precision could be improved by a factor of two with two years of livetime, assuming the same backgrounds and selections. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_19532 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Measuring Solar Neutrinos in the SNO+ Detector Cookman, Daniel High Energy Physics - Experiment The SNO+ experiment is a large multi-purpose neutrino detector, currently filled with liquid scintillator. For the first time in a single experiment, SNO+ is able to measure the neutrino oscillation parameters $θ_{12}$ and $Δm^{2}_{21}$ simultaneously through both reactor anti-neutrinos and $^{8}B$ solar neutrinos. The latter approach is demonstrated here, with an analysis of an initial 80 days of scintillator phase data. A Bayesian statistical approach via Markov Chain Monte Carlo is used, allowing for the simultaneous fitting of the oscillation parameters, $^{8}B$ neutrino flux, background components with constraints, and systematic uncertainties. The neutrino oscillation parameter $θ_{12}$ was measured to be $38.9^{\circ+8.0^{\circ}}_{-7.9^{\circ}}$, assuming the current global fit flux of $^{8}B$ solar neutrinos. This is consistent with the current global fit result for $θ_{12}$. A sensitivity study shows that this measurement is statistics-limited, and precision could be improved by a factor of two with two years of livetime, assuming the same backgrounds and selections. |
| title | Measuring Solar Neutrinos in the SNO+ Detector |
| topic | High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2403.19532 |