Observation of $\Lambda_b^0 \to J/\psi \Lambda$ at the Fermilab proton antiproton collider - INSPIRE

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Observation of $\Lambda_b^0 \to J/\psi \Lambda$ at the Fermilab proton antiproton collider

CDF

Collaboration

Aug, 1996

29 pages

Published in:

Phys.Rev.D 55 (1997) 1142-1152

DOI:

10.1103/PhysRevD.55.1142

PDG:

{{\mathit \Lambda}_{{{b}}}^{0}}

\rightarrow

{{\mathit J / \psi}{(1S)}}{{\mathit \Lambda}}{\times }

{{\mathit b}}

\rightarrow

{{\mathit \Lambda}_{{{b}}}^{0}}

Report number:

FERMILAB-PUB-96-270-E,
CDF-PUB-BOTTOM-PUBLIC-3724,
FERMILAB-PUB-98-173-EW

Experiments:

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Abstract: (APS)

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).

13.85.Ni
14.20.Mr
13.30.Eg
anti-p p: colliding beams
anti-p p: inclusive reaction
Lambda/b0: hadroproduction
Lambda/b0: hadronic decay
Lambda/b0: mass
Lambda/b0: branching ratio
mass difference: (Lambda/b0 B0)

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