Observation of the Λb 0→J/ψΛϕ decay in proton-proton collisions at √s=13 TeV
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Type :
Article
Publication Status :
Published
Access :
openAccess
Abstract
The observation of the Lambda(0)(b) -> J/psi Lambda phi decay is reported using proton-proton collision data collected at root s = 13TeV by the CMS experiment at the LHC in 2018, corresponding to an integrated luminosity of 60fb(-1). The ratio of the branching fractions B(Lambda(0)(b) -> J/psi Lambda phi)/B(Lambda(0)(b) > psi(2S)Lambda) is measured to be (8.26 +/- 0.90 (stat) +/- 0.68 (syst) +/- 0.11 (B)) x 10(-2), where the first uncertainty is statistical, the second is systematic, and the last uncertainty reflects the uncertainties in the world-average branching fractions of phi and psi(2S) decays to the reconstructed final states.
Source :
Physics Letters B
Date :
2020-03-10
Volume :
802
Publisher :
Elsevier
URI
http://hdl.handle.net/10679/7230https://www.sciencedirect.com/science/article/pii/S0370269320300071
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