Light quark loops in K ± → π ± ν ν ¯ $$ {K}^{\pm}\to {\pi}^{\pm}\nu \overline{\nu} $$ from vector meson dominance and update on the Kaon Unitarity Triangle
Abstract We use vector meson dominance to calculate non-perturbative contributions to the branching ratio of the rare decay K ± → π ± ν ν ¯ $$ {K}^{\pm}\to {\pi}^{\pm}\nu \overline{\nu} $$ stemming from matrix elements involving up-quark loops. The importance of this observable as well as of K 0 → π...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2024-12-01
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| Series: | Journal of High Energy Physics |
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| Online Access: | https://doi.org/10.1007/JHEP12(2024)097 |
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| author | Enrico Lunghi Amarjit Soni |
| author_facet | Enrico Lunghi Amarjit Soni |
| author_sort | Enrico Lunghi |
| collection | DOAJ |
| description | Abstract We use vector meson dominance to calculate non-perturbative contributions to the branching ratio of the rare decay K ± → π ± ν ν ¯ $$ {K}^{\pm}\to {\pi}^{\pm}\nu \overline{\nu} $$ stemming from matrix elements involving up-quark loops. The importance of this observable as well as of K 0 → π 0 l + l − and of the direct CP violation parameter ϵ K ′ $$ {\epsilon}_K^{\prime } $$ is then discussed in the context of a Unitarity Triangle sqtudy based on Kaon sector observables only. |
| format | Article |
| id | doaj-art-a1908549c27c4b9ba867bbd793eec5aa |
| institution | OA Journals |
| issn | 1029-8479 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj-art-a1908549c27c4b9ba867bbd793eec5aa2025-08-20T01:57:11ZengSpringerOpenJournal of High Energy Physics1029-84792024-12-0120241212210.1007/JHEP12(2024)097Light quark loops in K ± → π ± ν ν ¯ $$ {K}^{\pm}\to {\pi}^{\pm}\nu \overline{\nu} $$ from vector meson dominance and update on the Kaon Unitarity TriangleEnrico Lunghi0Amarjit Soni1Physics Department, Indiana UniversityPhysics Department, Brookhaven National LaboratoryAbstract We use vector meson dominance to calculate non-perturbative contributions to the branching ratio of the rare decay K ± → π ± ν ν ¯ $$ {K}^{\pm}\to {\pi}^{\pm}\nu \overline{\nu} $$ stemming from matrix elements involving up-quark loops. The importance of this observable as well as of K 0 → π 0 l + l − and of the direct CP violation parameter ϵ K ′ $$ {\epsilon}_K^{\prime } $$ is then discussed in the context of a Unitarity Triangle sqtudy based on Kaon sector observables only.https://doi.org/10.1007/JHEP12(2024)097Chiral LagrangianKaonsRare DecaysCKM Parameters |
| spellingShingle | Enrico Lunghi Amarjit Soni Light quark loops in K ± → π ± ν ν ¯ $$ {K}^{\pm}\to {\pi}^{\pm}\nu \overline{\nu} $$ from vector meson dominance and update on the Kaon Unitarity Triangle Journal of High Energy Physics Chiral Lagrangian Kaons Rare Decays CKM Parameters |
| title | Light quark loops in K ± → π ± ν ν ¯ $$ {K}^{\pm}\to {\pi}^{\pm}\nu \overline{\nu} $$ from vector meson dominance and update on the Kaon Unitarity Triangle |
| title_full | Light quark loops in K ± → π ± ν ν ¯ $$ {K}^{\pm}\to {\pi}^{\pm}\nu \overline{\nu} $$ from vector meson dominance and update on the Kaon Unitarity Triangle |
| title_fullStr | Light quark loops in K ± → π ± ν ν ¯ $$ {K}^{\pm}\to {\pi}^{\pm}\nu \overline{\nu} $$ from vector meson dominance and update on the Kaon Unitarity Triangle |
| title_full_unstemmed | Light quark loops in K ± → π ± ν ν ¯ $$ {K}^{\pm}\to {\pi}^{\pm}\nu \overline{\nu} $$ from vector meson dominance and update on the Kaon Unitarity Triangle |
| title_short | Light quark loops in K ± → π ± ν ν ¯ $$ {K}^{\pm}\to {\pi}^{\pm}\nu \overline{\nu} $$ from vector meson dominance and update on the Kaon Unitarity Triangle |
| title_sort | light quark loops in k π ν ν ¯ k pm to pi pm nu overline nu from vector meson dominance and update on the kaon unitarity triangle |
| topic | Chiral Lagrangian Kaons Rare Decays CKM Parameters |
| url | https://doi.org/10.1007/JHEP12(2024)097 |
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