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Analysis of Λ b 0 → pK − μ + μ − decays

Abstract:
The differential branching fraction and angular coefficients of Λb0 → 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.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1007/jhep12(2024)147

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Publisher:
Springer
Journal:
Journal of High Energy Physics More from this journal
Volume:
2024
Issue:
12
Article number:
147
Publication date:
2024-12-19
Acceptance date:
2024-12-03
DOI:
EISSN:
1029-8479
ISSN:
1126-6708


Language:
English
Keywords:
Source identifiers:
2555479
Deposit date:
2025-01-02
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