Szczegóły publikacji
Opis bibliograficzny
Study of $\Lambda^{0}_{b}$ and $\Xi^{0}_{b}$ decays to $\Lambda h^{+}h^{\prime -}$ and evidence for CP violation in $\Lambda^{0}_{b} \to \Lambda K^{+}K^{-}$ decays / R. Aaij, [et al.], S. BASHIR, [et al.], M. FIRLEJ, [et al.], T. FIUTOWSKI, [et al.], W. GOMUŁKA, [et al.], S. HASHMI, [et al.], M. IDZIK, [et al.], P. KOPCIEWICZ, [et al.], M. W. MAJEWSKI, [et al.], J. MOROŃ, [et al.], A. OBŁĄKOWSKA-MUCHA, [et al.], J. RYŻKA, [et al.], K. ŚWIENTEK, [et al.], T. SZUMLAK, [et al.], A. UKLEJA, [et al.] // Physical Review Letters ; ISSN 0031-9007. — 2025 — vol. 134 iss. 10 art. no. 101802, s. 101802-1–101802-16. — Bibliogr. s. 101802-6–101802-7, Abstr. — Publikacja dostępna online od: 2025-03-12. — P. Kopciewicz - dod. afiliacja: European Organization for Nuclear Research (CERN), Geneva, Swizterland
Autorzy (1153)
Dane bibliometryczne
| ID BaDAP | 159177 |
|---|---|
| Data dodania do BaDAP | 2025-05-13 |
| Tekst źródłowy | URL |
| DOI | 10.1103/PhysRevLett.134.101802 |
| Rok publikacji | 2025 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Physical Review Letters |
Abstract
A study of Λb0 and Ξb0 decays to Λh+h′- (h(′)=π,K) is performed using pp collision data collected by the LHCb experiment during LHC Runs 1–2, corresponding to an integrated luminosity of 9fb-1. The branching fractions for these decays are measured using the Λb0→Λc+(→Λπ+)π- decay as a control channel. The decays Λb0→Λπ+π- and Ξb0→ΛK-π+ are observed for the first time. For decay modes with sufficient signal yields, CP asymmetries are measured in the full and localized regions of the final-state phase space. Evidence is found for CP violation in the Λb0→ΛK+K- decay, interpreted as originating primarily from an asymmetric Λb0→N*+K- decay amplitude. The measured CP asymmetries for other decays are compatible with zero.
