New Limits on Coherent Neutrino Nucleus Elastic Scattering Cross Section at the Kuo-Sheng Reactor Neutrino Laboratory
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arXiv
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| Format: | Preprint |
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2024
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| author | TEXONO Collaboration Karmakar, S. Singh, M. K. Sharma, V. Wong, H. T. C., Greeshma Li, H. B. Singh, L. Agartioglu, M. Chen, J. H. Chiang, C. I. Deniz, M. Hsu, H. C. Karadag, S. Kumar, V. Leung, C. H. Li, J. Lin, F. K. Lin, S. T. Liu, S. K. Ma, H. Saraswat, K. Singh, M. K. Singh, V. Tanabe, D. Wang, J. S. Yang, L. T. Yeh, C. H. Yue, Q. |
| author_facet | TEXONO Collaboration Karmakar, S. Singh, M. K. Sharma, V. Wong, H. T. C., Greeshma Li, H. B. Singh, L. Agartioglu, M. Chen, J. H. Chiang, C. I. Deniz, M. Hsu, H. C. Karadag, S. Kumar, V. Leung, C. H. Li, J. Lin, F. K. Lin, S. T. Liu, S. K. Ma, H. Saraswat, K. Singh, M. K. Singh, V. Tanabe, D. Wang, J. S. Yang, L. T. Yeh, C. H. Yue, Q. |
| contents | Neutrino nucleus elastic scattering (νAel) with reactor neutrinos is an interaction under full quantum-mechanical coherence. It has not yet been experimentally observed. We present new results on the studies of νAel cross section with an electro-cooled p-type point-contact germanium detector at the Kuo-Sheng Reactor Neutrino laboratory. A total of (242)357 kg-days of Reactor ON(OFF) data at a detector threshold of 200 eVee in electron equivalent unit are analyzed. The Lindhard model parametrized by a single variable k which characterizes the quenching function was used. Limits at 90% confidence level are derived on the ratio ρ relative to standard model (SM) cross section of ρ<4.7 at the predicted value of k=0.162, while k<0.285 at the SM-value of ρ=1. Prospects on future positive measurements are discussed. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_18812 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | New Limits on Coherent Neutrino Nucleus Elastic Scattering Cross Section at the Kuo-Sheng Reactor Neutrino Laboratory TEXONO Collaboration Karmakar, S. Singh, M. K. Sharma, V. Wong, H. T. C., Greeshma Li, H. B. Singh, L. Agartioglu, M. Chen, J. H. Chiang, C. I. Deniz, M. Hsu, H. C. Karadag, S. Kumar, V. Leung, C. H. Li, J. Lin, F. K. Lin, S. T. Liu, S. K. Ma, H. Saraswat, K. Singh, M. K. Singh, V. Tanabe, D. Wang, J. S. Yang, L. T. Yeh, C. H. Yue, Q. Nuclear Experiment High Energy Physics - Experiment High Energy Physics - Phenomenology Neutrino nucleus elastic scattering (νAel) with reactor neutrinos is an interaction under full quantum-mechanical coherence. It has not yet been experimentally observed. We present new results on the studies of νAel cross section with an electro-cooled p-type point-contact germanium detector at the Kuo-Sheng Reactor Neutrino laboratory. A total of (242)357 kg-days of Reactor ON(OFF) data at a detector threshold of 200 eVee in electron equivalent unit are analyzed. The Lindhard model parametrized by a single variable k which characterizes the quenching function was used. Limits at 90% confidence level are derived on the ratio ρ relative to standard model (SM) cross section of ρ<4.7 at the predicted value of k=0.162, while k<0.285 at the SM-value of ρ=1. Prospects on future positive measurements are discussed. |
| title | New Limits on Coherent Neutrino Nucleus Elastic Scattering Cross Section at the Kuo-Sheng Reactor Neutrino Laboratory |
| topic | Nuclear Experiment High Energy Physics - Experiment High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2411.18812 |