Observation of the Λ b 0 → J / ψ Λ ϕ decay in proton-proton collisions at √ s = 13 TeV

Observation of the Λ b 0 → J / ψ Λ ϕ decay in proton-proton collisions at √ s = 13 TeV

© 2020 The Author 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 b...

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Bibliographic Details
Main Authors: The CMS Collaboration, Abercrombie, Daniel Robert, Allen, Branden, Baty, Austin Alan, Bi, Ran, Brandt, Stephanie Akemi, Busza, Wit, Cali, Ivan Amos, D'Alfonso, Mariarosaria, Gomez-Ceballos, Guillelmo, Goncharov, Maxim, Harris, Philip Coleman, Hsu, David, Hu, Miao, Klute, Markus, Kovalskyi, Dmytro, Lee, Y.-J., Luckey Jr, P David, Maier, Benedikt, Marini, Andrea Carlo, McGinn, Christopher Francis, Mironov, Camelia Maria, Narayanan, S., Niu, Xinmei, Paus, Christoph M. E., Rankin, Dylan S., Roland, Christof E, Roland, Gunther M, Shi, Z., Stephans, George S. F., Sumorok, Konstanty C, Tatar, Kaya, Velicanu, Dragos Alexandru, Wang, J., Wang, T. W., Wyslouch, Boleslaw
Other Authors: Massachusetts Institute of Technology. Department of Physics
Format: Article
Language:English
Published: Elsevier BV 2022
Online Access:https://hdl.handle.net/1721.1/133674.2
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Summary:© 2020 The Author 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.

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