Probing direct and indirect unitarity violation in future accelerator neutrino facilities
The possible existence of light and heavy sterile neutrinos may give rise to direct and indirect unitarity violation of the 3×3 lepton mixing matrix respectively. In the current work we study the potential of future accelerator neutrino facilities in probing the unitarity violation effects. Taking D...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2017-11-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269317307670 |
| _version_ | 1811293524332642304 |
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| author | Jian Tang Yibing Zhang Yu-Feng Li |
| author_facet | Jian Tang Yibing Zhang Yu-Feng Li |
| author_sort | Jian Tang |
| collection | DOAJ |
| description | The possible existence of light and heavy sterile neutrinos may give rise to direct and indirect unitarity violation of the 3×3 lepton mixing matrix respectively. In the current work we study the potential of future accelerator neutrino facilities in probing the unitarity violation effects. Taking DUNE, T2HK and a low-energy Neutrino Factory (LENF) as working examples of future accelerator neutrino facilities, we study the distinct effects of direct and indirect unitarity violation on the discovery reach of the leptonic CP violation and precision measurements of θ23 in the three neutrino framework. In addition, constraints on the additional mixing parameters of direct and indirect unitarity violation are also discussed. Finally, we stress that the combination of experiments with different oscillation channels, different neutrino beams and different detector techniques will be an effective solution to the parameter degeneracy problem and give the robust measurement of leptonic CP violation even if the direct and indirect unitarity violation are taken into account. |
| first_indexed | 2024-04-13T05:02:38Z |
| format | Article |
| id | doaj.art-728cf5012844421fa5d6f9f00999f5f6 |
| institution | Directory Open Access Journal |
| issn | 0370-2693 1873-2445 |
| language | English |
| last_indexed | 2024-04-13T05:02:38Z |
| publishDate | 2017-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-728cf5012844421fa5d6f9f00999f5f62022-12-22T03:01:16ZengElsevierPhysics Letters B0370-26931873-24452017-11-01774C21722410.1016/j.physletb.2017.09.055Probing direct and indirect unitarity violation in future accelerator neutrino facilitiesJian Tang0Yibing Zhang1Yu-Feng Li2School of Physics, Sun Yat-Sen University, Guangzhou, ChinaSchool of Physics, Sun Yat-Sen University, Guangzhou, ChinaInstitute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, ChinaThe possible existence of light and heavy sterile neutrinos may give rise to direct and indirect unitarity violation of the 3×3 lepton mixing matrix respectively. In the current work we study the potential of future accelerator neutrino facilities in probing the unitarity violation effects. Taking DUNE, T2HK and a low-energy Neutrino Factory (LENF) as working examples of future accelerator neutrino facilities, we study the distinct effects of direct and indirect unitarity violation on the discovery reach of the leptonic CP violation and precision measurements of θ23 in the three neutrino framework. In addition, constraints on the additional mixing parameters of direct and indirect unitarity violation are also discussed. Finally, we stress that the combination of experiments with different oscillation channels, different neutrino beams and different detector techniques will be an effective solution to the parameter degeneracy problem and give the robust measurement of leptonic CP violation even if the direct and indirect unitarity violation are taken into account.http://www.sciencedirect.com/science/article/pii/S0370269317307670 |
| spellingShingle | Jian Tang Yibing Zhang Yu-Feng Li Probing direct and indirect unitarity violation in future accelerator neutrino facilities Physics Letters B |
| title | Probing direct and indirect unitarity violation in future accelerator neutrino facilities |
| title_full | Probing direct and indirect unitarity violation in future accelerator neutrino facilities |
| title_fullStr | Probing direct and indirect unitarity violation in future accelerator neutrino facilities |
| title_full_unstemmed | Probing direct and indirect unitarity violation in future accelerator neutrino facilities |
| title_short | Probing direct and indirect unitarity violation in future accelerator neutrino facilities |
| title_sort | probing direct and indirect unitarity violation in future accelerator neutrino facilities |
| url | http://www.sciencedirect.com/science/article/pii/S0370269317307670 |
| work_keys_str_mv | AT jiantang probingdirectandindirectunitarityviolationinfutureacceleratorneutrinofacilities AT yibingzhang probingdirectandindirectunitarityviolationinfutureacceleratorneutrinofacilities AT yufengli probingdirectandindirectunitarityviolationinfutureacceleratorneutrinofacilities |