Studies of the resonance structure in D[superscript 0] → K[0 over S]K[superscript ±]π[superscript ∓] decays
Name
PhysRevD.93.052018.pdf
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Author(s)
Aaij, R.
Adeva, B.
Adinolfi, M.
Affolder, A.
Ajaltouni, Z.
Akar, S.
Albrecht, J.
Alessio, F.
Alexander, M.
Ali, S.
Date Issued
March 2016
Journal
Physical Review D
Publisher
American Physical Society
Citation
Aaij, R., B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, S. Akar, J. Albrecht, et al. “Studies of the Resonance Structure in D[superscript 0] → K[0 over S]K[superscript ±]π[superscript ∓] Decays.” Phys. Rev. D 93, no. 5 (March 31, 2016). © 2016 CERN, for the LHCb Collaboration
Version
Final published version
Abstract
Amplitude models are applied to studies of resonance structure in D[superscript 0] → K[0 over S]K[superscript -]π[superscript +] and D[superscript 0] → K[0 over S]K[superscript +]π[superscript -] decays using pp collision data corresponding to an integrated luminosity of 3.0 fb[superscript -1] 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 100 MeV/c[superscript 2] around the K[superscript *](892)[superscript ±] 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(D[superscript 0] → K[0 over S]K[superscript +]π[superscript -])/B(D[superscript 0] → K[0 over S]K[superscript -]π[superscript +]) 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[superscript *](892)K amplitudes of different charges are compared with the amplitude model results.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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DOI of Published Version
http://dx.doi.org/10.1103/PhysRevD.93.052018
