Szczegóły publikacji
Opis bibliograficzny
Measurement of CP asymmetry in $B^0_s \to D^{\mp}_s K^{\pm}$ decays / R. Aaij, [et al.], S. BASHIR, [et al.], S. HASHMI, [et al.], P. KOPCIEWICZ, [et al.], M. W. MAJEWSKI, [et al.], A. OBŁĄKOWSKA-MUCHA, [et al.], J. RYŻKA, [et al.], T. SZUMLAK, [et al.], A. UKLEJA, [et al.] // The Journal of High Energy Physics [Dokument elektroniczny]. — Czasopismo elektroniczne ; ISSN 1029-8479 . — 2025 — vol. 2025 iss. 3 art. no. 139, s. 1–32. — Wymagania systemowe: Adobe Reader. — Bibliogr. s. 22–25, Abstr. — P. Kopciewicz – dod. afiliacja: European Organization for Nuclear Research (CERN), Geneva, Switzerland
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Dane bibliometryczne
| ID BaDAP | 160565 |
|---|---|
| Data dodania do BaDAP | 2025-06-26 |
| Tekst źródłowy | URL |
| DOI | 10.1007/JHEP03(2025)139 |
| Rok publikacji | 2025 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp | |
| Creative Commons | |
| Czasopismo/seria | The Journal of High Energy Physics |
Abstract
A measurement of the CP-violating parameters in Bs0→Ds∓K± decays is reported, based on the analysis of proton-proton collision data collected by the LHCb experiment corresponding to an integrated luminosity of 6 fb−1 at a centre-of-mass energy of 13 TeV. The measured parameters are obtained with a decay-time dependent analysis yielding Cf = 0.791 ± 0.061 ± 0.022, Af∆Γ = −0.051 ± 0.134 ± 0.058, Af¯∆Γ = −0.303 ± 0.125 ± 0.055, Sf = −0.571 ± 0.084 ± 0.023 and Sf¯ = −0.503 ± 0.084 ± 0.025, where the first uncertainty is statistical and the second systematic. This corresponds to CP violation in the interference between mixing and decay of about 8.6 σ. Together with the value of the Bs0 mixing phase −2βs, these parameters are used to obtain a measurement of the CKM angle γ equal to (74 ± 12)° modulo 180°, where the uncertainty contains both statistical and systematic contributions. This result is combined with the previous LHCb measurement in this channel using 3 fb−1 resulting in a determination of γ=81−11+12∘. © The Author(s) 2025.