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Preprint
Report number arXiv:2501.06483 ; LHCb-PAPER-2024-045,CERN-EP-2024-329 ; LHCB-PAPER-2024-045
Title Study of light-meson resonances decaying to K0SKπ in the B(K0SKπ)K channels
Author(s) LHCb Collaboration  Show all 1151 authors
Corporate author(s) LHCb Collaboration
Publication 2025
Imprint 14 Jan 2025
Number of pages 46 p, 46
Note All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2024-045.html (LHCb public pages)
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; LHCb
Keywords flavor physics ; QCD ; B physics ; spectroscopy
Abstract A study is presented of B+K0SKπ+K and B+K0SK+πK+ decays based on the analysis of proton-proton collision data collected with the LHCb detector at centre-of-mass energies of 7, 8 and 13 TeV, corresponding to an integrated luminosity of 9fb1. The K0SKπ invariant-mass distributions of both B+ decay modes show, in the m(K0SKπ)<1.85 GeV mass region, a rich spectrum of light-meson resonances, resolved using an amplitude analysis. A complex mixture of JPC=0+,1++ and 1+ resonances is observed, dominated by η(1405), η(1470), η(1760), f1(1285), f1(1420) and h1(1405) resonances. The K0SKπ Dalitz plots are dominated by asymmetric crossing KˉK bands which are different for the two B+ decay modes. This is due to a different interference pattern between the 1++ and 1+ amplitudes in the two channels. Branching fractions are measured for each resonant contribution.
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Copyright/License Preprint: © 2024-2025 CERN (License: CC-BY-4.0)
Submitted by lhcb.secretariat@cern.ch



 


 Record created 2025-01-14, last modified 2025-01-21


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