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 Λc+ → p K− 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 Λc+ baryon and eases inclusion of the Λc+ → p K− π+ decay mode in hadronic amplitude analyses.

R. Aaij, A. S. W. Abdelmotteleb, C. Abellan Beteta, F. Abudin??n, T. Ackernley, B. Adeva, et al. (2023). Λc+ Polarimetry Using the Dominant Hadronic Mode. JOURNAL OF HIGH ENERGY PHYSICS, 2023(7), 0-25 [10.1007/jhep07(2023)228].

Λc+ Polarimetry Using the Dominant Hadronic Mode

A. Carbone;F. Ferrari;D. Galli;D. Manuzzi;C. Patrignani;E. Spedicato;A. Villa;S. Zucchelli;
2023

Abstract

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 Λc+ → p K− 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 Λc+ baryon and eases inclusion of the Λc+ → p K− π+ decay mode in hadronic amplitude analyses.
2023
R. Aaij, A. S. W. Abdelmotteleb, C. Abellan Beteta, F. Abudin??n, T. Ackernley, B. Adeva, et al. (2023). Λc+ Polarimetry Using the Dominant Hadronic Mode. JOURNAL OF HIGH ENERGY PHYSICS, 2023(7), 0-25 [10.1007/jhep07(2023)228].
R. Aaij; A. S. W. Abdelmotteleb; C. Abellan Beteta; F. Abudin??n; T. Ackernley; B. Adeva; M. Adinolfi; P. Adlarson; H. Afsharnia; C. Agapopoulou; C. A...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/953061
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