Discerning the Nature of Neutrinos: Decoherence and Geometric Phases
We present new approaches to distinguish between Dirac and Majorana neutrinos. The first is based on the analysis of the geometric phases associated to neutrinos in matter, the second on the effects of decoherence on neutrino oscillations. In the former we compute the total and geometric phase for n...
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| Format: | Article |
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MDPI AG
2020-11-01
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| Series: | Universe |
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| Online Access: | https://www.mdpi.com/2218-1997/6/11/207 |
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| author | Antonio Capolupo Salvatore Marco Giampaolo Gaetano Lambiase Aniello Quaranta |
| author_facet | Antonio Capolupo Salvatore Marco Giampaolo Gaetano Lambiase Aniello Quaranta |
| author_sort | Antonio Capolupo |
| collection | DOAJ |
| description | We present new approaches to distinguish between Dirac and Majorana neutrinos. The first is based on the analysis of the geometric phases associated to neutrinos in matter, the second on the effects of decoherence on neutrino oscillations. In the former we compute the total and geometric phase for neutrinos, and find that they depend on the Majorana phase and on the parametrization of the mixing matrix. In the latter, we show that Majorana neutrinos might violate <inline-formula><math display="inline"><semantics><mrow><mi>C</mi><mi>P</mi><mi>T</mi></mrow></semantics></math></inline-formula> symmetry, whereas Dirac neutrinos preserve <inline-formula><math display="inline"><semantics><mrow><mi>C</mi><mi>P</mi><mi>T</mi></mrow></semantics></math></inline-formula>. A phenomenological analysis is also reported showing the possibility to highlight the distinctions between Dirac and Majorana neutrinos. |
| first_indexed | 2024-03-10T14:53:16Z |
| format | Article |
| id | doaj.art-d4e41142bc5f481daf2e5804510f0aca |
| institution | Directory Open Access Journal |
| issn | 2218-1997 |
| language | English |
| last_indexed | 2024-03-10T14:53:16Z |
| publishDate | 2020-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Universe |
| spelling | doaj.art-d4e41142bc5f481daf2e5804510f0aca2023-11-20T20:49:17ZengMDPI AGUniverse2218-19972020-11-0161120710.3390/universe6110207Discerning the Nature of Neutrinos: Decoherence and Geometric PhasesAntonio Capolupo0Salvatore Marco Giampaolo1Gaetano Lambiase2Aniello Quaranta3Dipartimento di Fisica “E.R. Caianiello” Universitá di Salerno, and INFN—Gruppo Collegato di Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, ItalyDivision of Theoretical Physics, Ruder Bošković Institute, Bijenčka Cesta 54, 10000 Zagreb, CroatiaDipartimento di Fisica “E.R. Caianiello” Universitá di Salerno, and INFN—Gruppo Collegato di Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, ItalyDipartimento di Fisica “E.R. Caianiello” Universitá di Salerno, and INFN—Gruppo Collegato di Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, ItalyWe present new approaches to distinguish between Dirac and Majorana neutrinos. The first is based on the analysis of the geometric phases associated to neutrinos in matter, the second on the effects of decoherence on neutrino oscillations. In the former we compute the total and geometric phase for neutrinos, and find that they depend on the Majorana phase and on the parametrization of the mixing matrix. In the latter, we show that Majorana neutrinos might violate <inline-formula><math display="inline"><semantics><mrow><mi>C</mi><mi>P</mi><mi>T</mi></mrow></semantics></math></inline-formula> symmetry, whereas Dirac neutrinos preserve <inline-formula><math display="inline"><semantics><mrow><mi>C</mi><mi>P</mi><mi>T</mi></mrow></semantics></math></inline-formula>. A phenomenological analysis is also reported showing the possibility to highlight the distinctions between Dirac and Majorana neutrinos.https://www.mdpi.com/2218-1997/6/11/207geometric phaseneutrino oscillationdecoherenceneutrino nature |
| spellingShingle | Antonio Capolupo Salvatore Marco Giampaolo Gaetano Lambiase Aniello Quaranta Discerning the Nature of Neutrinos: Decoherence and Geometric Phases Universe geometric phase neutrino oscillation decoherence neutrino nature |
| title | Discerning the Nature of Neutrinos: Decoherence and Geometric Phases |
| title_full | Discerning the Nature of Neutrinos: Decoherence and Geometric Phases |
| title_fullStr | Discerning the Nature of Neutrinos: Decoherence and Geometric Phases |
| title_full_unstemmed | Discerning the Nature of Neutrinos: Decoherence and Geometric Phases |
| title_short | Discerning the Nature of Neutrinos: Decoherence and Geometric Phases |
| title_sort | discerning the nature of neutrinos decoherence and geometric phases |
| topic | geometric phase neutrino oscillation decoherence neutrino nature |
| url | https://www.mdpi.com/2218-1997/6/11/207 |
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