Measurement of the Λ0b lifetime in the exclusive decay Λ0b→J/ψΛ0 in pp¯ collisions at √s =1.96 TeV
Journal Article
·
· Physical Review. D, Particles, Fields, Gravitation and Cosmology
We measure the Λ0b lifetime in the fully reconstructed decay Λ0b → J/Ψ Λ0 using 10.4 fb-1 of pp¯ collisions collected with the D0 detector at √s = 1.96 TeV. The lifetime of the topologically similar decay channel B⁰ → J/Ψ KS⁰ is also measured. We obtain τ (Λ0b) = 1.303 ± 0.075 (stat.) ± 0.035 (syst.) ps and τ (B⁰) = 1.508 ± 0.025 (stat.) ± 0.043 (syst.) ps. Using these measurements, we determine the lifetime ratio of τ (Δb⁰)/τ (B⁰) = 0.864 ± 0.052 (stat.) ± 0.033 (syst.).
- Research Organization:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- Contributing Organization:
- D0 Collaboration
- DOE Contract Number:
- AC02-07CH11359
- OSTI ID:
- 1038945
- Report Number(s):
- FERMILAB-PUB-12-097-E; PRVDAQ; ArticleNumber: 112003; TRN: US1202059
- Journal Information:
- Physical Review. D, Particles, Fields, Gravitation and Cosmology, Vol. 85, Issue 11; ISSN 1550-7998
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
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