Study of b-hadron decays to Λ+c h−h′− final states

Decays of Ξ −b and Ω−b baryons to Λ+c h−h′− final states, with h−h′− being π−π−, K−π− and K−K− meson pairs, are searched for using data collected with the LHCb detector. The data sample studied corresponds to an integrated luminosity of 8.7 fb−1 of pp collisions collected at centre-of-mass energies...

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Main Authors: Aaij, Roel (Author) , Bachmann, Sebastian (Author) , Carus, Leon (Author) , Caspary, Rowina (Author) , Celani, Sara (Author) , Cocha Toapaxi, Carlos (Author) , De Cian, Michel (Author) , Dittmann, Lucas (Author) , Esen, Sevda (Author) , Glaser, Fabian (Author) , Günther, Paul André (Author) , Han, Xiaoxue (Author) , Hansmann-Menzemer, Stephanie (Author) , Herrero Gascón, Paula (Author) , Hu, Jiangqiao (Author) , Kubat, Jakub (Author) , Langenbruch, Christoph (Author) , Leverington, Blake (Author) , Marks, Jörg (Author) , Morgenthaler, Maurice Pierre (Author) , Pais, Preema (Author) , Roy, Shreya (Author) , Ruiz Diaz, Miguel (Author) , Schmelling, Michael (Author) , Tuci, Giulia (Author) , Uecker, Lennart Henning (Author) , Unverzagt, Daniel Joachim (Author) , Uwer, Ulrich (Author) , Wang, Chishuai (Author) , Witola, Lukas (Author) , Zavertyaev, Mikhail (Author) , Zhao, Ya (Author) , Zhelezov, Alexey (Author)
Corporate Author: LHCb Collaboration (Author)
Format: Article (Journal)
Language:English
Published: August 19,2024
In: Journal of high energy physics
Year: 2024, Issue: 8, Pages: 1-31
ISSN:1029-8479
DOI:10.1007/JHEP08(2024)132
Online Access:Verlag, kostenfrei, Volltext: https://doi.org/10.1007/JHEP08(2024)132
Verlag, kostenfrei, Volltext: https://link.springer.com/article/10.1007/JHEP08(2024)132
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Author Notes:The LHCb collaboration

MARC

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520 |a Decays of Ξ −b and Ω−b baryons to Λ+c h−h′− final states, with h−h′− being π−π−, K−π− and K−K− meson pairs, are searched for using data collected with the LHCb detector. The data sample studied corresponds to an integrated luminosity of 8.7 fb−1 of pp collisions collected at centre-of-mass energies √s = 7, 8 and 13 TeV. The products of the relative branching fractions and fragmentation fractions for each signal mode, relative to the B− → Λ+c pπ− mode, are measured, with Ξ −b → Λ+c K−π−, Ξ −b → Λ+c K−K− and Ω−b → Λ+c K−K− decays being observed at over 5 σ significance. The Ξ −b → Λ+c K−π− mode is also used to measure the Ξ −b production asymmetry, which is found to be consistent with zero. In addition, the B− → Λ+c pK− decay is observed for the first time, and its branching fraction is measured relative to that of the B− → Λ+c pπ− mode. 
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SRT |a LHCBCOLLABSTUDYOFBHA1920