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.

Observation of the Λb0→J/ψΛϕ decay in proton-proton collisions at s=13TeV / Sirunyan A.M., Tumasyan A., Adam W., Ambrogi F., Bergauer T., Dragicevic M., Ero J., Escalante Del Valle A., Flechl M., Fruhwirth R., Jeitler M., Krammer N., Kratschmer I., Liko D., Madlener T., Mikulec I., Rad N., Schieck J., Schofbeck R., Spanring M., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - ELETTRONICO. - 802:(2020), pp. 135203-135203. [10.1016/j.physletb.2020.135203]

Observation of the Λb0→J/ψΛϕ decay in proton-proton collisions at s=13TeV

Ceccarelli R.;Ciulli V.;D'Alessandro R.;Focardi E.;Latino G.;Lenzi P.;
2020

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.
2020
802
135203
135203
Goal 9: Industry, Innovation, and Infrastructure
Sirunyan A.M.; Tumasyan A.; Adam W.; Ambrogi F.; Bergauer T.; Dragicevic M.; Ero J.; Escalante Del Valle A.; Flechl M.; Fruhwirth R.; Jeitler M.; Kram...espandi
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/1210962
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