Lepton flavor violation by two units
Charged lepton flavor violation arises in the Standard Model Effective Field Theory at mass dimension six. The operators that induce neutrinoless muon and tauon decays are among the best constrained and are sensitive to new-physics scales up to 107GeV. An entirely different class of lepton-flavor-vi...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Elsevier
2024-05-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269324001795 |
| _version_ | 1797213491275235328 |
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| author | Julian Heeck Mikheil Sokhashvili |
| author_facet | Julian Heeck Mikheil Sokhashvili |
| author_sort | Julian Heeck |
| collection | DOAJ |
| description | Charged lepton flavor violation arises in the Standard Model Effective Field Theory at mass dimension six. The operators that induce neutrinoless muon and tauon decays are among the best constrained and are sensitive to new-physics scales up to 107GeV. An entirely different class of lepton-flavor-violating operators violates lepton flavors by two units rather than one and does not lead to such clean signatures. Even the well-known case of muonium–anti-muonium conversion that falls into this category is only sensitive to two out of the three ΔLμ=−ΔLe=2 dimension-six operators. We derive constraints on many of these operators from lepton flavor universality and show how to make further progress with future searches at Belle II and future experiments such as Z factories or muon colliders. |
| first_indexed | 2024-04-24T10:59:07Z |
| format | Article |
| id | doaj.art-e269ef68605f4718b871f23bdf40995e |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-04-24T10:59:07Z |
| publishDate | 2024-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-e269ef68605f4718b871f23bdf40995e2024-04-12T04:44:18ZengElsevierPhysics Letters B0370-26932024-05-01852138621Lepton flavor violation by two unitsJulian Heeck0Mikheil Sokhashvili1Corresponding authors.; Department of Physics, University of Virginia, Charlottesville, VA 22904-4714, USACorresponding authors.; Department of Physics, University of Virginia, Charlottesville, VA 22904-4714, USACharged lepton flavor violation arises in the Standard Model Effective Field Theory at mass dimension six. The operators that induce neutrinoless muon and tauon decays are among the best constrained and are sensitive to new-physics scales up to 107GeV. An entirely different class of lepton-flavor-violating operators violates lepton flavors by two units rather than one and does not lead to such clean signatures. Even the well-known case of muonium–anti-muonium conversion that falls into this category is only sensitive to two out of the three ΔLμ=−ΔLe=2 dimension-six operators. We derive constraints on many of these operators from lepton flavor universality and show how to make further progress with future searches at Belle II and future experiments such as Z factories or muon colliders.http://www.sciencedirect.com/science/article/pii/S0370269324001795 |
| spellingShingle | Julian Heeck Mikheil Sokhashvili Lepton flavor violation by two units Physics Letters B |
| title | Lepton flavor violation by two units |
| title_full | Lepton flavor violation by two units |
| title_fullStr | Lepton flavor violation by two units |
| title_full_unstemmed | Lepton flavor violation by two units |
| title_short | Lepton flavor violation by two units |
| title_sort | lepton flavor violation by two units |
| url | http://www.sciencedirect.com/science/article/pii/S0370269324001795 |
| work_keys_str_mv | AT julianheeck leptonflavorviolationbytwounits AT mikheilsokhashvili leptonflavorviolationbytwounits |