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Λ+c polarimetry using the dominant hadronic mode

The polarimeter vector field for multibody decays of a spin-half baryon is introduced as a generalisation of the baryon asymmetry parameters. Using a recent amplitude analysis of the Λ+c → pK−π+ decay performed at the LHCb experiment, we compute the distribution of the kinematic-dependent polarimeter...

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Main Authors: Aaij, Roel (Author) , Bachmann, Sebastian (Author) , Borsato, Martino (Author) , Caspary, Rowina (Author) , Frau, Giulia (Author) , Günther, Paul André (Author) , Han, Xiaoxue (Author) , Hansmann-Menzemer, Stephanie (Author) , Hu, Jiangqiao (Author) , Kubat, Jakub (Author) , Leverington, Blake (Author) , Marks, Jörg (Author) , Morgenthaler, Maurice Pierre (Author) , Skuza, Raphael (Author) , Unverzagt, Daniel Joachim (Author) , Uwer, Ulrich (Author) , Wang, Chishuai (Author) , Witola, Lukas (Author) , Zhelezov, Alexey (Author)
Corporate Author: LHCb Collaboration (Author)
Format: Article (Journal)
Language:English
Published: 31 July 2023
In: Journal of high energy physics
Year: 2023, Issue: 7, Pages: 1-26
ISSN:1029-8479
DOI:10.1007/JHEP07(2023)228
Online Access:Verlag, kostenfrei, Volltext: https://doi.org/10.1007/JHEP07(2023)228
Verlag, kostenfrei, Volltext: https://link.springer.com/10.1007/JHEP07(2023)228
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Author Notes:the LHCb collaboration
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Summary:The polarimeter vector field for multibody decays of a spin-half baryon is introduced as a generalisation of the baryon asymmetry parameters. Using a recent amplitude analysis of the Λ+c → pK−π+ decay performed at the LHCb experiment, we compute the distribution of the kinematic-dependent polarimeter vector for this process in the space of Mandelstam variables to express the polarised decay rate in a model-agnostic form. The obtained representation can facilitate polarisation measurements of the Λ+c baryon and eases inclusion of the Λ+c → pK−π+ decay mode in hadronic amplitude analyses.
Item Description:LHCb Collaboration: R. Aaij, S. Bachmann, M. Borsato, R. Caspary, G. Frau, P.A. Günther, X. Han, S. Hansmann-Menzemer, J. Hu, J. Kubat, B. Leverington, J. Marks, M.P. Morgenthaler, R. Skuza, D. Unverzagt, U. Uwer, C. Wang, L. Witola, A. Zhelezov [und 1043 weitere]
Im Text ist "+" hochgestellt und "c" tiefgestellt
Gesehen am 10.01.2024
Physical Description:Online Resource
ISSN:1029-8479
DOI:10.1007/JHEP07(2023)228

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