4.4 Article

Λc+ polarimetry using the dominant hadronic mode

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JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 7, 页码 -

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SPRINGER
DOI: 10.1007/JHEP07(2023)228

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Polarization; Charm Physics; Flavour Physics; Hadron-Hadron Scattering

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We introduce the polarimeter vector field for multibody decays of a spin-half baryon as a generalization of baryon asymmetry parameters. Using the recent amplitude analysis of the Lambda(+)(c) -> pK(-)pi(+) decay 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 polarized decay rate in a model-agnostic form. The obtained representation can facilitate polarization measurements of the Lambda(+)(c) baryon and ease the inclusion of the Lambda(+)(c)-> pK(-)pi(+) decay mode in hadronic amplitude analyses.
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 Lambda(+)(c) -> pK(-)pi(+) 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 Lambda(+)(c) baryon and eases inclusion of the Lambda(+)(c)-> pK(-)pi(+) decay mode in hadronic amplitude analyses.

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