Charged Lepton Flavour Violating meson decays in seesaw models
Abstract The occurrence of neutrino oscillations demands the existence of flavour violation in charged lepton sector. The relation between the branching ratios of different charged lepton flavour violating (CLFV) decay modes depends on the details of the neutrino mass model. In this work, we conside...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2025-03-01
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| Series: | Journal of High Energy Physics |
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| Online Access: | https://doi.org/10.1007/JHEP03(2025)183 |
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| author | Pravesh Chndra Awasthi Jai More Akhila Kumar Pradhan Kumar Rao Purushottam Sahu S. Uma Sankar |
| author_facet | Pravesh Chndra Awasthi Jai More Akhila Kumar Pradhan Kumar Rao Purushottam Sahu S. Uma Sankar |
| author_sort | Pravesh Chndra Awasthi |
| collection | DOAJ |
| description | Abstract The occurrence of neutrino oscillations demands the existence of flavour violation in charged lepton sector. The relation between the branching ratios of different charged lepton flavour violating (CLFV) decay modes depends on the details of the neutrino mass model. In this work, we consider the three types of simple seesaw mechanisms of neutrino masses and study the correlation between the radiative CLFV decays and the meson CLFV decays. We find that the meson CLFV decay branching ratios are negligibly small in type-II seesaw mechanism whereas they are constrained to be at least three (two) orders of magnitude smaller than the radiative CLFV decay branching ratios in the case of type-I (type-III) seesaw mechanism. Thus the relationship between these two modes of CLFV decays helps in distinguishing between different types of seesaw mechanism. If, the branching ratios of CLFV decays of mesons are larger than those of radiative CLFV decays, it provides a strong hint that the neutrino mass generating mechanism is more complicated than simple seesaw. |
| format | Article |
| id | doaj-art-4d06c1b4b2064bb3bc794c1627fc9cd7 |
| institution | DOAJ |
| issn | 1029-8479 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj-art-4d06c1b4b2064bb3bc794c1627fc9cd72025-08-20T03:06:47ZengSpringerOpenJournal of High Energy Physics1029-84792025-03-012025312310.1007/JHEP03(2025)183Charged Lepton Flavour Violating meson decays in seesaw modelsPravesh Chndra Awasthi0Jai More1Akhila Kumar Pradhan2Kumar Rao3Purushottam Sahu4S. Uma Sankar5Department of Physics, Indian Institute of Technology BombayDepartment of Physics, Indian Institute of Technology BombayDepartment of Physics, Indian Institute of Technology BombayDepartment of Physics, Indian Institute of Technology BombayDepartment of Physics, Indian Institute of Technology BombayDepartment of Physics, Indian Institute of Technology BombayAbstract The occurrence of neutrino oscillations demands the existence of flavour violation in charged lepton sector. The relation between the branching ratios of different charged lepton flavour violating (CLFV) decay modes depends on the details of the neutrino mass model. In this work, we consider the three types of simple seesaw mechanisms of neutrino masses and study the correlation between the radiative CLFV decays and the meson CLFV decays. We find that the meson CLFV decay branching ratios are negligibly small in type-II seesaw mechanism whereas they are constrained to be at least three (two) orders of magnitude smaller than the radiative CLFV decay branching ratios in the case of type-I (type-III) seesaw mechanism. Thus the relationship between these two modes of CLFV decays helps in distinguishing between different types of seesaw mechanism. If, the branching ratios of CLFV decays of mesons are larger than those of radiative CLFV decays, it provides a strong hint that the neutrino mass generating mechanism is more complicated than simple seesaw.https://doi.org/10.1007/JHEP03(2025)183Lepton Flavour Violation (charged)Rare Decays |
| spellingShingle | Pravesh Chndra Awasthi Jai More Akhila Kumar Pradhan Kumar Rao Purushottam Sahu S. Uma Sankar Charged Lepton Flavour Violating meson decays in seesaw models Journal of High Energy Physics Lepton Flavour Violation (charged) Rare Decays |
| title | Charged Lepton Flavour Violating meson decays in seesaw models |
| title_full | Charged Lepton Flavour Violating meson decays in seesaw models |
| title_fullStr | Charged Lepton Flavour Violating meson decays in seesaw models |
| title_full_unstemmed | Charged Lepton Flavour Violating meson decays in seesaw models |
| title_short | Charged Lepton Flavour Violating meson decays in seesaw models |
| title_sort | charged lepton flavour violating meson decays in seesaw models |
| topic | Lepton Flavour Violation (charged) Rare Decays |
| url | https://doi.org/10.1007/JHEP03(2025)183 |
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