corner
corner

Phys. Rev. D 55, 1142–1152 (1997)

Observation of Λb0→J/ψ Λ at the Fermilab proton-antiproton collider

Download: PDF (240 kB) Buy this article Export: BibTeX or EndNote (RIS)

F. Abe et al.
Show All Authors/Affiliations

Received 30 August 1996; published in the issue dated 1 February 1997

The decay Λb0→J/ψ Λ is observed in 110 pb-1 of pp¯ collisions taken at s=1.8 TeV. These data are used to measure a Λb0 mass of 5621±4(stat)±3(syst) MeV/c2, and a mass difference between the Λb0 and the B0 of 340±5(stat)±1(syst) MeV/c2. The production cross-section times branching fraction for the decay Λb0→J/ψ Λ relative to that for the decay B0→J/ψ KS0 has been measured to be 0.27±0.12(stat)±0.05(syst).

© 1997 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevD.55.1142
DOI:
10.1103/PhysRevD.55.1142
PACS:
14.20.Mr, 13.30.Eg, 13.85.Ni