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Author  |
Lopez Aguilar, D.A.; Rendon, J.; Roig, P. |
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Title |
CP violation in two-meson Tau decays induced by heavy new physics |
Type |
Journal Article |
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Year |
2025 |
Publication |
Journal of High Energy Physics |
Abbreviated Journal |
J. High Energy Phys. |
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Volume |
01 |
Issue |
1 |
Pages |
105 - 24pp |
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Keywords |
CP Violation; Effective Field Theories of QCD; Semi-Leptonic Decays; SMEFT |
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Abstract |
We apply the effective field theory formalism that was used to study CP violation induced by heavy new physics in the tau -> KS pi nu tau 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/pi)pi 0 and KKS, 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 +/- KS modes if a precision of 5% is reached on this observable, that can check as well the BaBar anomaly in KS pi. For the pi +/-pi 0 channels, new physics would be difficult to probe at present. Disentangling new sources of CP violation would be most challenging in K +/-pi 0 and the other modes. |
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Address |
[Aguilar, Daniel A. Lopez; Roig, Pablo] Inst Politecn Nacl, Ctr Invest & Estudios Avanzados, Dept Fis, Apdo Postal 14-740, Mexico City 07000, Mexico, Email: Daniel.Lopez.Aguilar@cinvestav.mx; |
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Publisher |
Springer |
Place of Publication |
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Language |
English |
Summary Language |
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Original Title |
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Series Title |
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Series Volume |
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Edition |
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ISSN |
1029-8479 |
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Notes |
WOS:001413847200004 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
6516 |
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