Amplitude models are applied to studies of resonance structure in D0→KS0K-π+ ; D0→KS0K+π- decays using pp collision data corresponding to an integrated luminosity of 3.0 fb-1 collected by the LHCb experiment. Relative magnitude ; phase information is determined, ; coherence factors ; related observables are computed for both the whole phase space ; a restricted region of 100 MeV/c2 around the K∗(892)± resonance. Two formulations for the Kπ S-wave are used, both of which give a good description of the data. The ratio of branching fractions B(D0→KS0K+π-)/B(D0→KS0K-π+) is measured to be 0.655±0.004(stat)±0.006(syst) over the full phase space ; 0.370±0.003(stat)±0.012(syst) in the restricted region. A search for CP violation is performed using the amplitude models ; 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. © 2016 CERN.

Studies of the resonance structure in D0 → KS0 K±π decays STUDIES of the RESONANCE STRUCTURE in ⋯ R. AAIJ et al

PAPPAGALLO, MARCO IGNAZIO;
2016-01-01

Abstract

Amplitude models are applied to studies of resonance structure in D0→KS0K-π+ ; D0→KS0K+π- decays using pp collision data corresponding to an integrated luminosity of 3.0 fb-1 collected by the LHCb experiment. Relative magnitude ; phase information is determined, ; coherence factors ; related observables are computed for both the whole phase space ; a restricted region of 100 MeV/c2 around the K∗(892)± resonance. Two formulations for the Kπ S-wave are used, both of which give a good description of the data. The ratio of branching fractions B(D0→KS0K+π-)/B(D0→KS0K-π+) is measured to be 0.655±0.004(stat)±0.006(syst) over the full phase space ; 0.370±0.003(stat)±0.012(syst) in the restricted region. A search for CP violation is performed using the amplitude models ; 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. © 2016 CERN.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11586/194239
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