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Studies of the resonance structure in D0KS0K±π decays

R. Aaij et al. (LHCb Collaboration)
Phys. Rev. D 93, 052018 – Published 31 March 2016
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Abstract

Amplitude models are applied to studies of resonance structure in D0KS0Kπ+ and D0KS0K+π decays using pp collision data corresponding to an integrated luminosity of 3.0fb1 collected by the LHCb experiment. Relative magnitude and phase information is determined, and coherence factors and related observables are computed for both the whole phase space and a restricted region of 100MeV/c2 around the K*(892)± resonance. Two formulations for the KπS-wave are used, both of which give a good description of the data. The ratio of branching fractions B(D0KS0K+π)/B(D0KS0Kπ+) is measured to be 0.655±0.004(stat)±0.006(syst) over the full phase space and 0.370±0.003(stat)±0.012(syst) in the restricted region. A search for CP violation is performed using the amplitude models and no significant effect is found. Predictions from SU(3) flavor symmetry for K*(892)K amplitudes of different charges are compared with the amplitude model results.

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  • Received 23 September 2015

DOI:https://doi.org/10.1103/PhysRevD.93.052018

This article is available under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

© 2016 CERN, for the LHCb Collaboration

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Vol. 93, Iss. 5 — 1 March 2016

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