Amplitude analysis of B s 0 → K S 0 K±π∓ decays

Robert Appleby, Silvia Borghi, Christopher Burr, Stefano De Capua, Deepanwita Dutta, Evelina Gersabeck, Marco Gersabeck, Lucia Grillo, Martha Hilton, George Lafferty, Andrew Mcnab, Christopher Parkes, Gediminas Sarpis, Mark Williams, The LHCb Collaboration

    Research output: Contribution to journalArticlepeer-review


    The first untagged decay-time-integrated amplitude analysis of B s 0  → K S 0 K±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,+, K 2 * (1430)0,+ and K 0 * (1430)0,+, and their charge conjugates. Measurements of the branching fractions of the decay modes B s 0 → K*(892)±K∓ and B0s→K∗(---)(892)0K0(---)Bs0→K∗(---)(892)0K0(---) are in agreement with, and more precise than, previous results. The decays B s 0  → K 0 * (1430)±K∓ and B0s→K∗0(---)(1430)0K0(---)Bs0→K0∗(---)(1430)0K0(---) are observed for the first time, each with significance over 10 standard deviations.

    Original languageEnglish
    JournalEuropean Physical Journal C. Particles and Fields
    Issue number114
    Early online date21 Jun 2019
    Publication statusPublished - Jun 2019


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