Szczegóły publikacji
Opis bibliograficzny
Precision measurement of the $\Xi^{-}_{b}$ baryon lifetime / R. Aaij, [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.] // Physical Review. D ; ISSN 2470-0010. — Tytuł poprz.: Physical Review D. Particles, fields, gravitation, and cosmology ; ISSN: 1550-7998. — 2024 — vol. 110 iss. 7 art. no. 072002, s. 072002-1–072002-16. — Bibliogr. s. 072002-9–072002-10, Abstr. — Publikacja dostępna online od: 2024-10-03. — P. Kopciewicz - dod. afiliacja: European Organization for Nuclear Research (CERN), Geneva, Switzerland
Autorzy (1088)
Dane bibliometryczne
| ID BaDAP | 158084 |
|---|---|
| Data dodania do BaDAP | 2025-02-11 |
| Tekst źródłowy | URL |
| DOI | 10.1103/PhysRevD.110.072002 |
| Rok publikacji | 2024 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Physical Review, D |
Abstract
A sample of pp collision data, corresponding to an integrated luminosity of 5.5 fb-1 and collected by the LHCb experiment during LHC Run 2, is used to measure the ratio of the lifetime of the Ξ-b baryon to that of the Λ0b baryon, rτ ≡ τΞ-b=τΛ0b. The value rτ = 1.076 ± 0.013 ± 0.006 is obtained, where the first uncertainty is statistical and the second systematic. This value is averaged with the corresponding value from Run 1 to obtain rRun1,2τ = 1.078 ± 0.012 ± 0.007. Multiplying by the world-average value of the Λ0b lifetime yields τRun1,2Ξ-b = 1.578 ± 0.018 ± 0.010 ± 0.011 ps, where the uncertainties are statistical, systematic, and due to the limited knowledge of the Λ0b lifetime. This measurement improves the precision of the current world average of the Ξ-b lifetime by about a factor of 2, and is in good agreement with the most recent theoretical predictions.
