Szczegóły publikacji
Opis bibliograficzny
First observation of the $\Lambda^{0}_{b} \to \Lambda^{+}_{c} D^{−}_{s} K^{+} K^{−}$ decay and search for pentaquarks in the $\Lambda^{+}_{c} D^{−}_{s}$ system / 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.], J. MOROŃ, [et al.], A. OBŁĄKOWSKA-MUCHA, [et al.], K. M. SOWA, [et al.], K. ŚWIENTEK, [et al.], T. SZUMLAK, [et al.], A. UKLEJA, [et al.] // Physical Review . D ; ISSN 2470-0010. — Tytuł poprz.: Physical Review D. Particles, fields, gravitation, and cosmology ; ISSN: 1550-7998. — 2025 — vol. 112 iss. 5 art. no. 052013, s. 052013-1–052013-14. — Bibliogr. s. 052013-7–052013-8, Abstr. — Publikacja dostępna online od: 2025-09-29
Autorzy (1210)
Dane bibliometryczne
| ID BaDAP | 163772 |
|---|---|
| Data dodania do BaDAP | 2025-10-30 |
| Tekst źródłowy | URL |
| DOI | 10.1103/b28d-z2xc |
| Rok publikacji | 2025 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Physical Review, D |
Abstract
The Λ0𝑏→Λ+𝑐𝐷−𝑠𝐾+𝐾− decay is observed for the first time using the data sample from proton-proton collisions recorded at a center-of-mass energy of 13 TeV with the LHCb detector, corresponding to an integrated luminosity of 6 fb−1. The ratio of branching fraction to that of Λ0𝑏 →Λ+𝑐𝐷−𝑠 decays is measured as 0.0141 ±0.0019 ±0.0012, where the first uncertainty is statistical and the second systematic. A search for hidden-charm pentaquarks with strangeness is performed in the Λ+𝑐𝐷−𝑠 system. No evidence is found, and upper limits on the production ratio of 𝑃𝑐¯𝑐𝑠(4338)0 and 𝑃𝑐¯𝑐𝑠(4459)0 pentaquarks relative to the Λ+𝑐𝐷−𝑠 final state are set at the 95% confidence level as 0.12 and 0.20, respectively.
