First observation and branching fraction measurement of the Λ› b 0 →†’ D s - p decay

First observation and branching fraction measurement of the Λ› b 0 →†’ D s - p decay

The first observation of the Lambda(0)(b) -> D-s(-) p decay is presented using proton-proton collision data collected by the LHCb experiment at a centre-of-mass energy of root s = 13TeV, corresponding to a total integrated luminosity of 6 fb(-1). Using the Lambda(0)(b) -> Lambda(+pi-)(...

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Bibliographic Details
Published in:The journal of high energy physics
Main Authors: Aaij, R., Adlarson, Patrik, Eklund, Lars, Kupsc, Andrzej, Zunica, G.
Format: Journal Article
Language:English
Published: 05-01-2023
Subjects:
B Physics
Branching fraction
Flavour Physics
Hadron-Hadron Scattering
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Summary:The first observation of the Lambda(0)(b) -> D-s(-) p decay is presented using proton-proton collision data collected by the LHCb experiment at a centre-of-mass energy of root s = 13TeV, corresponding to a total integrated luminosity of 6 fb(-1). Using the Lambda(0)(b) -> Lambda(+pi-)(c) decay as the normalisation mode, the branching fraction of the Lambda(0)(b) -> D-s(-) p decay is measured to be B (Lambda(0)(b) -> D-s(-) p) = (12.6 +/- 0.5 +/- 0.3 +/- 1.2) x 10(-6), where the first uncertainty is statistical, the second systematic and the third due to uncertainties in the branching fractions of the Lambda(0)(b) -> Lambda(+pi-)(c), D-s(-) -> K-K+pi(-) and Lambda(+)(c) -> pK(-)pi(+) decays.
ISSN:1029-8479
1126-6708
DOI:10.1007/JHEP07(2023)075