The diferential branching fraction and angular coefcients of Λ 0 b → pK−µ +µ − decays are measured in bins of the dimuon mass squared and dihadron mass. The analysis is performed using a data set corresponding to 9 fb−1 of integrated luminosity collected with the LHCb detector between 2011 and 2018. The data are consistent with receiving contributions from a mixture of Λ resonances with diferent spin-parity quantum numbers. The angular coefcients show a pattern of vector-axial vector interference that is a characteristic of the type of favour-changing neutral-current transition relevant for these decays.

Analysis of $$ {\Lambda}_b^0 $$ → pK−μ+μ− decays

De Angelis, C.;Dettori, F.;Fabiano, F.;Manca, G.;Oldeman, R.;Provenzano, D.;Saitta, B.;
2024-01-01

Abstract

The diferential branching fraction and angular coefcients of Λ 0 b → pK−µ +µ − decays are measured in bins of the dimuon mass squared and dihadron mass. The analysis is performed using a data set corresponding to 9 fb−1 of integrated luminosity collected with the LHCb detector between 2011 and 2018. The data are consistent with receiving contributions from a mixture of Λ resonances with diferent spin-parity quantum numbers. The angular coefcients show a pattern of vector-axial vector interference that is a characteristic of the type of favour-changing neutral-current transition relevant for these decays.
2024
B Physics; Flavour Changing Neutral Currents; Flavour Physics; Hadron-Hadron Scattering
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11584/445360
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