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Search for CP violation in the decays D±→KS0K±, Ds±→KS0K±, and Ds±→KS0π±
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We report a search for C P violation in the decay modes D ± → K 0 S K ± , D ± s → K 0 S K ± , and D ± s → K 0 S π ± using a data set corresponding to an integrated luminosity of 469 fb − 1 collected with the BABAR detector at the PEP-II asymmetric energy e + e − storage rings. The decay rate C P asymmetries, A C P , are determined to be ( + 0.13 ± 0.36 ( stat ) ± 0.25 ( syst ) ) % , ( − 0.05 ± 0.23 ( stat ) ± 0.24 ( syst ) ) % , and ( + 0.6 ± 2.0 ( stat ) ± 0.3 ( syst ) ) % , respectively. These measurements are consistent with zero, and also with the Standard Model prediction [ ( − 0.332 ± 0.006 ) % for the D ± → K 0 S K ± and D ± s → K 0 S K ± modes, and ( + 0.332 ± 0.006 ) % for the D ± s → K 0 S π ± mode]. They are the most precise determinations to date.
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GRAUGÉS POUS, Eugeni and BABAR Collaboration. Search for CP violation in the decays D±→KS0K±, Ds±→KS0K±, and Ds±→KS0π±. Physical Review D. 2013. Vol. 87, num. 5, pags. 052012. ISSN 1550-7998. [consulted: 3 of August of 2026]. Available at: https://hdl.handle.net/2445/131826