An amplitude analysis of the Ξ+c → pK−π+ decay together with a measurement of the Ξ+c polarization vector in semileptonic beauty-hadron decays is presented. The analysis is performed using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb−1. An amplitude model is developed and the resonance fractions as well as two- and three-body decay parameters are reported. A sizeable Ξ+c polarization is found. A large sensitivity of the Ξ+c → pK−π+ decay to the polarization is seen, making the amplitude model suitable for Ξ+c polarization measurements in other systems.

Aaij, R., Abdelmotteleb, A., Beteta, C., Abudinen, F., Ackernley, T., Adefisoye, A., et al. (2025). Amplitude analysis of the Ξc+ → pK−π+ decay and Ξc+ baryon polarization measurement in semileptonic beauty-hadron decays. PHYSICAL REVIEW D, 112(9), 1-23 [10.1103/gcft-fgp1].

Amplitude analysis of the Ξc+ → pK−π+ decay and Ξc+ baryon polarization measurement in semileptonic beauty-hadron decays

Anelli A.;Borsato M.;Calvi M.;Capelli S.;Carniti P.;Falcao L. N.;Fazzini D.;Gotti C.;Kirsebom V. S.;Malentacca L.;Martinazzoli L.;Martinelli M.;Minotti A.;Pizzichemi M.;Salomoni M.;
2025

Abstract

An amplitude analysis of the Ξ+c → pK−π+ decay together with a measurement of the Ξ+c polarization vector in semileptonic beauty-hadron decays is presented. The analysis is performed using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb−1. An amplitude model is developed and the resonance fractions as well as two- and three-body decay parameters are reported. A sizeable Ξ+c polarization is found. A large sensitivity of the Ξ+c → pK−π+ decay to the polarization is seen, making the amplitude model suitable for Ξ+c polarization measurements in other systems.
Articolo in rivista - Articolo scientifico
Physics
English
7-nov-2025
2025
112
9
1
23
092003
none
Aaij, R., Abdelmotteleb, A., Beteta, C., Abudinen, F., Ackernley, T., Adefisoye, A., et al. (2025). Amplitude analysis of the Ξc+ → pK−π+ decay and Ξc+ baryon polarization measurement in semileptonic beauty-hadron decays. PHYSICAL REVIEW D, 112(9), 1-23 [10.1103/gcft-fgp1].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/609583
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