CP violation in two-meson Tau decays induced by heavy new physics
Abstract We apply the effective field theory formalism that was used to study CP violation induced by heavy new physics in the τ → K S πν τ decays to the other two-meson tau decay channels. We focus on the rate and the forward-backward asymmetries, that are predicted using current bounds on the comp...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2025-01-01
|
| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP01(2025)105 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1823863469509705728 |
|---|---|
| author | Daniel A. López Aguilar Javier Rendón Pablo Roig |
| author_facet | Daniel A. López Aguilar Javier Rendón Pablo Roig |
| author_sort | Daniel A. López Aguilar |
| collection | DOAJ |
| description | Abstract We apply the effective field theory formalism that was used to study CP violation induced by heavy new physics in the τ → K S πν τ decays to the other two-meson tau decay channels. We focus on the rate and the forward-backward asymmetries, that are predicted using current bounds on the complex Wilson coefficients of the effective Lagrangian. We discuss our outcomes for the modes with (K/π)π 0 and KK S , that can be studied at Belle-II and a super-tau-charm facility. Our main finding is that current and forthcoming experiments would be sensitive to the maximum allowed CP rate asymmetry in the K ± K S modes if a precision of 5% is reached on this observable, that can check as well the BaBar anomaly in K S π. For the π ± π 0 channels, new physics would be difficult to probe at present. Disentangling new sources of CP violation would be most challenging in K ± π 0 and the other modes. |
| format | Article |
| id | doaj-art-77a569c710124425a75e5536426a5ae7 |
| institution | Kabale University |
| issn | 1029-8479 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj-art-77a569c710124425a75e5536426a5ae72025-02-09T12:06:48ZengSpringerOpenJournal of High Energy Physics1029-84792025-01-012025112410.1007/JHEP01(2025)105CP violation in two-meson Tau decays induced by heavy new physicsDaniel A. López Aguilar0Javier Rendón1Pablo Roig2Departamento de Física, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico NacionalInstituto de Ciencias Nucleares, Universidad Nacional Autónoma de MéxicoDepartamento de Física, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico NacionalAbstract We apply the effective field theory formalism that was used to study CP violation induced by heavy new physics in the τ → K S πν τ decays to the other two-meson tau decay channels. We focus on the rate and the forward-backward asymmetries, that are predicted using current bounds on the complex Wilson coefficients of the effective Lagrangian. We discuss our outcomes for the modes with (K/π)π 0 and KK S , that can be studied at Belle-II and a super-tau-charm facility. Our main finding is that current and forthcoming experiments would be sensitive to the maximum allowed CP rate asymmetry in the K ± K S modes if a precision of 5% is reached on this observable, that can check as well the BaBar anomaly in K S π. For the π ± π 0 channels, new physics would be difficult to probe at present. Disentangling new sources of CP violation would be most challenging in K ± π 0 and the other modes.https://doi.org/10.1007/JHEP01(2025)105CP ViolationEffective Field Theories of QCDSemi-Leptonic DecaysSMEFT |
| spellingShingle | Daniel A. López Aguilar Javier Rendón Pablo Roig CP violation in two-meson Tau decays induced by heavy new physics Journal of High Energy Physics CP Violation Effective Field Theories of QCD Semi-Leptonic Decays SMEFT |
| title | CP violation in two-meson Tau decays induced by heavy new physics |
| title_full | CP violation in two-meson Tau decays induced by heavy new physics |
| title_fullStr | CP violation in two-meson Tau decays induced by heavy new physics |
| title_full_unstemmed | CP violation in two-meson Tau decays induced by heavy new physics |
| title_short | CP violation in two-meson Tau decays induced by heavy new physics |
| title_sort | cp violation in two meson tau decays induced by heavy new physics |
| topic | CP Violation Effective Field Theories of QCD Semi-Leptonic Decays SMEFT |
| url | https://doi.org/10.1007/JHEP01(2025)105 |
| work_keys_str_mv | AT danielalopezaguilar cpviolationintwomesontaudecaysinducedbyheavynewphysics AT javierrendon cpviolationintwomesontaudecaysinducedbyheavynewphysics AT pabloroig cpviolationintwomesontaudecaysinducedbyheavynewphysics |