Improved measurements of the neutrino mixing angle θ[subscript 13] with the Double Chooz detector
The Double Chooz experiment presents improved measurements of the neutrino mixing angle θ[subscript 13] using the data collected in 467.90 live days from a detector positioned at an average distance of 1050 m from two reactor cores at the Chooz nuclear power plant. Several novel techniques have been...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | en_US |
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Springer-Verlag
2014
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| Online Access: | http://hdl.handle.net/1721.1/92540 https://orcid.org/0000-0002-9970-108X https://orcid.org/0000-0002-6393-0438 |
| _version_ | 1811089376830029824 |
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| author | Spitz, Joshua B. Winslow, Lindley Conrad, Janet Marie Terao, Kazuhiro |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Spitz, Joshua B. Winslow, Lindley Conrad, Janet Marie Terao, Kazuhiro |
| author_sort | Spitz, Joshua B. |
| collection | MIT |
| description | The Double Chooz experiment presents improved measurements of the neutrino mixing angle θ[subscript 13] using the data collected in 467.90 live days from a detector positioned at an average distance of 1050 m from two reactor cores at the Chooz nuclear power plant. Several novel techniques have been developed to achieve significant reductions of the backgrounds and systematic uncertainties with respect to previous publications, whereas the efficiency of the [bar over ν][subscript e] signal has increased. The value of θ[subscript 13] is measured to be sin[superscript 2]2θ[subscript 13] = 0.090[+ 0.032 over − 0.029] from a fit to the observed energy spectrum. Deviations from the reactor [bar over ν][subscript e] prediction observed above a prompt signal energy of 4 MeV and possible explanations are also reported. A consistent value of θ[subscript 13] is obtained from a fit to the observed rate as a function of the reactor power independently of the spectrum shape and background estimation, demonstrating the robustness of the θ[subscript 13] measurement despite the observed distortion. |
| first_indexed | 2024-09-23T14:17:53Z |
| format | Article |
| id | mit-1721.1/92540 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T14:17:53Z |
| publishDate | 2014 |
| publisher | Springer-Verlag |
| record_format | dspace |
| spelling | mit-1721.1/925402023-02-26T04:31:42Z Improved measurements of the neutrino mixing angle θ[subscript 13] with the Double Chooz detector Spitz, Joshua B. Winslow, Lindley Conrad, Janet Marie Terao, Kazuhiro Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Conrad, Janet Spitz, Joshua B. Terao, K. Winslow, Lindley The Double Chooz experiment presents improved measurements of the neutrino mixing angle θ[subscript 13] using the data collected in 467.90 live days from a detector positioned at an average distance of 1050 m from two reactor cores at the Chooz nuclear power plant. Several novel techniques have been developed to achieve significant reductions of the backgrounds and systematic uncertainties with respect to previous publications, whereas the efficiency of the [bar over ν][subscript e] signal has increased. The value of θ[subscript 13] is measured to be sin[superscript 2]2θ[subscript 13] = 0.090[+ 0.032 over − 0.029] from a fit to the observed energy spectrum. Deviations from the reactor [bar over ν][subscript e] prediction observed above a prompt signal energy of 4 MeV and possible explanations are also reported. A consistent value of θ[subscript 13] is obtained from a fit to the observed rate as a function of the reactor power independently of the spectrum shape and background estimation, demonstrating the robustness of the θ[subscript 13] measurement despite the observed distortion. United States. Dept. of Energy National Science Foundation (U.S.) 2014-12-29T21:25:50Z 2014-12-29T21:25:50Z 2014-10 2014-07 Article http://purl.org/eprint/type/JournalArticle 1029-8479 1126-6708 http://hdl.handle.net/1721.1/92540 Abe, Y., J. C. dos Anjos, J. C. Barriere, E. Baussan, I. Bekman, M. Bergevin, T. J. C. Bezerra, et al. “Improved Measurements of the Neutrino Mixing Angle θ[subscript 13] with the Double Chooz Detector.” J. High Energ. Phys. 2014, no. 10 (October 2014). https://orcid.org/0000-0002-9970-108X https://orcid.org/0000-0002-6393-0438 en_US http://dx.doi.org/10.1007/jhep10(2014)086 Journal of High Energy Physics Creative Commons Attribution http://creativecommons.org/licenses/by/4.0/ application/pdf Springer-Verlag Springer-Verlag |
| spellingShingle | Spitz, Joshua B. Winslow, Lindley Conrad, Janet Marie Terao, Kazuhiro Improved measurements of the neutrino mixing angle θ[subscript 13] with the Double Chooz detector |
| title | Improved measurements of the neutrino mixing angle θ[subscript 13] with the Double Chooz detector |
| title_full | Improved measurements of the neutrino mixing angle θ[subscript 13] with the Double Chooz detector |
| title_fullStr | Improved measurements of the neutrino mixing angle θ[subscript 13] with the Double Chooz detector |
| title_full_unstemmed | Improved measurements of the neutrino mixing angle θ[subscript 13] with the Double Chooz detector |
| title_short | Improved measurements of the neutrino mixing angle θ[subscript 13] with the Double Chooz detector |
| title_sort | improved measurements of the neutrino mixing angle θ subscript 13 with the double chooz detector |
| url | http://hdl.handle.net/1721.1/92540 https://orcid.org/0000-0002-9970-108X https://orcid.org/0000-0002-6393-0438 |
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