Combining sterile neutrino fits to short-baseline data with IceCube data
Recent global fits to short-baseline neutrino oscillation data have been performed finding preference for a sterile neutrino solution (3+1) over null. In the most recent iteration, it was pointed out that an unstable sterile neutrino (3+1+decay) may be a better description of the data. This is due t...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
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American Physical Society
2020
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| Online Access: | https://hdl.handle.net/1721.1/126558 |
| _version_ | 1810979970213740544 |
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| author | Moulai, Marjon H. Argüelles, C.A. Collin, G. H. Conrad, J.M. Diaz, A. Shaevitz, M. H. |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Moulai, Marjon H. Argüelles, C.A. Collin, G. H. Conrad, J.M. Diaz, A. Shaevitz, M. H. |
| author_sort | Moulai, Marjon H. |
| collection | MIT |
| description | Recent global fits to short-baseline neutrino oscillation data have been performed finding preference for a sterile neutrino solution (3+1) over null. In the most recent iteration, it was pointed out that an unstable sterile neutrino (3+1+decay) may be a better description of the data. This is due to the fact that this model significantly reduces the tension between appearance and disappearance datasets. In this work, we add a 1-year IceCube dataset to the global fit obtaining new results for the standard 3+1 and 3+1+decay sterile neutrino scenarios. We find that the 3+1+decay model provides a better fit than the 3+1, even in the presence of IceCube, with reduced appearance to disappearance tension. The 3+1+decay model is a 5.4σ improvement over the null hypothesis and a 2.8σ improvement over the standard 3+1 model. |
| first_indexed | 2024-09-23T09:51:25Z |
| format | Article |
| id | mit-1721.1/126558 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T09:51:25Z |
| publishDate | 2020 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/1265582022-09-30T17:17:38Z Combining sterile neutrino fits to short-baseline data with IceCube data Moulai, Marjon H. Argüelles, C.A. Collin, G. H. Conrad, J.M. Diaz, A. Shaevitz, M. H. Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Institute for Data, Systems, and Society Recent global fits to short-baseline neutrino oscillation data have been performed finding preference for a sterile neutrino solution (3+1) over null. In the most recent iteration, it was pointed out that an unstable sterile neutrino (3+1+decay) may be a better description of the data. This is due to the fact that this model significantly reduces the tension between appearance and disappearance datasets. In this work, we add a 1-year IceCube dataset to the global fit obtaining new results for the standard 3+1 and 3+1+decay sterile neutrino scenarios. We find that the 3+1+decay model provides a better fit than the 3+1, even in the presence of IceCube, with reduced appearance to disappearance tension. The 3+1+decay model is a 5.4σ improvement over the null hypothesis and a 2.8σ improvement over the standard 3+1 model. NSF (Grant no. GRFP-1122374) NSF (Grant no. PHY-1707971) NSF (Grant no. PHY-1801996) 2020-08-13T14:49:54Z 2020-08-13T14:49:54Z 2020-03 2019-11 2020-03-18T14:34:12Z Article http://purl.org/eprint/type/JournalArticle 2470-0029 2470-0010 https://hdl.handle.net/1721.1/126558 Moulai, M.H. et al. "Combining sterile neutrino fits to short-baseline data with IceCube data." Physical Review D 101 (March 2020): 055020 doi 10.1103/PhysRevD.101.055020 ©2020 Author(s) en 10.1103/PhysRevD.101.055020 Physical Review D Creative Commons Attribution 3.0 unported license http://creativecommons.org/licenses/by/3.0 application/pdf American Physical Society American Physical Society |
| spellingShingle | Moulai, Marjon H. Argüelles, C.A. Collin, G. H. Conrad, J.M. Diaz, A. Shaevitz, M. H. Combining sterile neutrino fits to short-baseline data with IceCube data |
| title | Combining sterile neutrino fits to short-baseline data with IceCube data |
| title_full | Combining sterile neutrino fits to short-baseline data with IceCube data |
| title_fullStr | Combining sterile neutrino fits to short-baseline data with IceCube data |
| title_full_unstemmed | Combining sterile neutrino fits to short-baseline data with IceCube data |
| title_short | Combining sterile neutrino fits to short-baseline data with IceCube data |
| title_sort | combining sterile neutrino fits to short baseline data with icecube data |
| url | https://hdl.handle.net/1721.1/126558 |
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