Analysis of Λ b 0 → pK−μ+μ− decays
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13130_2024_Article_25156.pdf
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1.65 MB
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Author(s)
Aaij, R.
Abdelmotteleb, A. S. W.
Abellan Beteta, C.
Abudinén, F.
Ackernley, T.
Adefisoye, A. A.
Adeva, B.
Adinolfi, M.
Adlarson, P.
Agapopoulou, C.
Date Issued
December 19, 2024
Journal
Journal of High Energy Physics
Publisher
Springer Berlin Heidelberg
Citation
Analysis of Λ0b → pK−µ+µ− decays. J. High Energ. Phys. 2024, 147 (2024).
Version
Final published version
Abstract
The differential branching fraction and angular coefficients of Λ b 0 → pK−μ+μ− decays are measured in bins of the dimuon mass squared and dihadron mass. The analysis is performed using a data set corresponding to 9 fb−1 of integrated luminosity collected with the LHCb detector between 2011 and 2018. The data are consistent with receiving contributions from a mixture of Λ resonances with different spin-parity quantum numbers. The angular coefficients show a pattern of vector-axial vector interference that is a characteristic of the type of flavour-changing neutral-current transition relevant for these decays.
MIT Department
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Creative Commons Attribution
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DOI of Published Version
https://doi.org/10.1007/JHEP12(2024)147
