Amplitude analysis of Bs0 → KS0 K ± π decays

The Lhcb Collaboration

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Abstract

The first untagged decay-time-integrated amplitude analysis of Bs0 → KS0K±π decays is performed using a sample corresponding to 3.0 fb−1 of pp collision data recorded with the LHCb detector during 2011 and 2012. The data are described with an amplitude model that contains contributions from the intermediate resonances K*(892)0,+, K2*(1430)0,+ and K0*(1430)0,+, and their charge conjugates. Measurements of the branching fractions of the decay modes Bs0 → K*(892)±K and Bs0→K*(—)(892)0K0(—) are in agreement with, and more precise than, previous results. The decays Bs0 → K0*(1430)±K and Bs0→K0*(—)(1430)0K0(—) are observed for the first time, each with significance over 10 standard deviations.

Original languageEnglish (US)
Article number114
JournalJournal of High Energy Physics
Volume2019
Issue number6
DOIs
StatePublished - Jun 1 2019

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Keywords

  • B physics
  • Branching fraction
  • CP violation
  • Flavor physics
  • Hadron-Hadron scattering (experiments)

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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