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Observation of the Lambda_b to psi Lambda phi decay in proton-proton collisions at 13 TeV

Title
Observation of the Lambda_b to psi Lambda phi decay in proton-proton collisions at 13 TeV
Author
김태정
Keywords
CMS; b physics; Heavy-flavor spectroscopy; Computing
Issue Date
2020-03
Publisher
ELSEVIER
Citation
PHYSICS LETTERS B, v. 802, article no. 135203
Abstract
The observation of the Λb0→J/ψΛϕ decay is reported using proton-proton collision data collected at 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(Λb0→J/ψΛϕ)/B(Λb0→ψ(2S)Λ) is measured to be (8.26±0.90(stat)±0.68(syst)±0.11(B))×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 ϕ and ψ(2S) decays to the reconstructed final states.
URI
https://www.sciencedirect.com/science/article/pii/S0370269320300071?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/162776
ISSN
0370-2693; 1873-2445
DOI
10.1016/j.physletb.2020.135203
Appears in Collections:
COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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