Measurement of the Λb⁰ lifetime in the exclusive decay Λb⁰→J/ψΛ⁰ in pp̄ 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/ψΛ⁰ using 10.4 fb⁻¹ of pp̄ collisions collected with the D0 detector at √s=1.96 TeV. The lifetime of the topologically similar decay channel B⁰→J/ψK⁰S 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(Λ⁰b)/τ(B⁰)=0.864±0.052(stat)±0.033(syst).
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 1103493
- Journal Information:
- Physical Review. D, Particles, Fields, Gravitation and Cosmology, Journal Name: Physical Review. D, Particles, Fields, Gravitation and Cosmology Vol. 85 Journal Issue: 11; ISSN 1550-7998
- Publisher:
- American Physical SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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