Szczegóły publikacji
Opis bibliograficzny
Observation of $\Lambda^0_b \to \Lambda^{+}_{c}\bar{D}^{(*)0} K^-$ and $\Lambda^0_b \to \Lambda^+_c D^{*-}_s$ decays / R. Aaij, [et al.], M. FIRLEJ, [et al.], T. FIUTOWSKI, [et al.], M. IDZIK, [et al.], P. KOPCIEWICZ, [et al.], W. Kucewicz, [et al.], M. W. MAJEWSKI, [et al.], J. MOROŃ, [et al.], A. OBŁĄKOWSKA-MUCHA, [et al.], B. RACHWAŁ, [et al.], J. RYŻKA, [et al.], K. ŚWIENTEK, [et al.], T. SZUMLAK, [et al.], A. UKLEJA, [et al.] // The European Physical Journal. C, Particles and Fields ; ISSN 1434-6044. — 2024 — vol. 84 iss. 6 art. no. 575, s. 1–18. — Bibliogr. s. 10–12, Abstr. — Publikacja dostępna online od: 2024-06-05. — P. Kopciewicz – dod. afiliacja: European Organization for Nuclear Research (CERN), Geneva, Switzerland. — W. Kucewicz - afiliacja: Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków
Autorzy (1102)
Dane bibliometryczne
| ID BaDAP | 158088 |
|---|---|
| Data dodania do BaDAP | 2025-02-11 |
| Tekst źródłowy | URL |
| DOI | 10.1140/epjc/s10052-024-12752-3 |
| Rok publikacji | 2024 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp | |
| Creative Commons | |
| Czasopismo/seria | European Physical Journal, C |
Abstract
The decays Λb 0→Λc +D¯(∗)0K- and Λb 0→Λc +Ds ∗- are observed for the first time, in proton-proton collision data at s=13TeV, corresponding to an integrated luminosity of 5.4fb-1 collected with the LHCb detector. Their ratios of branching fractions with respect to the Λb 0→Λc +Ds - mode are measured to be (Formula presented.) where the first uncertainties are statistical, the second systematic, and the third, for the Λb 0→Λc +D¯(∗)0K- decays, are due to the uncertainties on the branching fractions of the Ds -→K-K+π- and D¯0→K+π- decay modes. The measured branching fractions probe factorization assumptions in effective theories and provide the normalization for future pentaquark searches in Λb 0→Λc +D¯(∗)0K- decay channels.