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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| Soggetti: | |
| Accesso online: | https://arxiv.org/abs/2412.19859 |
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| _version_ | 1866911248319250432 |
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| author | Fu, Haoyang Luo, Wentai Ji, Xiangpan Chen, Shaomin |
| author_facet | Fu, Haoyang Luo, Wentai Ji, Xiangpan Chen, Shaomin |
| contents | The determination of experimental sensitivity is a key step in the search for neutrinoless double beta decay ($0νββ$), providing a quantitative benchmark for detector design. Two commonly used statistical approaches are the counting method, which estimates sensitivity from the number of events in a predefined region of interest, and the fitting method, which extracts the signal contribution by fitting the full energy spectrum. In this work, we investigate both discovery sensitivity and exclusion sensitivity within these two approaches. Through statistical derivation and simulation verification, we show that the relative performance of the methods depends on both energy resolution and exposure, while at higher exposures the fitting method consistently yields more stringent sensitivity. These results provide guidance for selecting the optimal statistical method in future $0νββ$ experiments. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_19859 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Statistical research on determining sensitivity of neutrinoless double beta decays Fu, Haoyang Luo, Wentai Ji, Xiangpan Chen, Shaomin Instrumentation and Detectors High Energy Physics - Experiment Nuclear Experiment The determination of experimental sensitivity is a key step in the search for neutrinoless double beta decay ($0νββ$), providing a quantitative benchmark for detector design. Two commonly used statistical approaches are the counting method, which estimates sensitivity from the number of events in a predefined region of interest, and the fitting method, which extracts the signal contribution by fitting the full energy spectrum. In this work, we investigate both discovery sensitivity and exclusion sensitivity within these two approaches. Through statistical derivation and simulation verification, we show that the relative performance of the methods depends on both energy resolution and exposure, while at higher exposures the fitting method consistently yields more stringent sensitivity. These results provide guidance for selecting the optimal statistical method in future $0νββ$ experiments. |
| title | Statistical research on determining sensitivity of neutrinoless double beta decays |
| topic | Instrumentation and Detectors High Energy Physics - Experiment Nuclear Experiment |
| url | https://arxiv.org/abs/2412.19859 |