Journal
EUROPEAN PHYSICAL JOURNAL C
Volume 78, Issue 6, Pages -Publisher
SPRINGER
DOI: 10.1140/epjc/s10052-018-5758-4
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Funding
- CERN
- CAPES (Brazil)
- CNPq (Brazil)
- FAPERJ (Brazil)
- FINEP (Brazil)
- MOST (China)
- NSFC (China)
- CNRS/IN2P3 (France)
- BMBF (Germany)
- DFG (Germany)
- MPG (Germany)
- INFN (Italy)
- NWO (The Netherlands)
- MNiSW (Poland)
- NCN (Poland)
- MEN/IFA (Romania)
- MinES (Russia)
- FASO (Russia)
- MinECo (Spain)
- SNSF (Switzerland)
- SER (Switzerland)
- NASU (Ukraine)
- STFC (United Kingdom)
- NSF (USA)
- AvH Foundation (Germany)
- EPLANET (European Union)
- Marie Sklodowska-Curie Actions (European Union)
- ERC (European Union)
- ANR
- Labex P2IO
- OCEVU
- Region Auvergne-Rhone-Alpes (France)
- RFBR (Russia)
- RSF (Russia)
- Yandex LLC (Russia)
- GVA (Spain)
- XuntaGal (Spain)
- GENCAT (Spain)
- Herchel Smith Fund
- Royal Society
- English-Speaking Union
- Leverhulme Trust (United Kingdom)
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Amplitude models are constructed to describe the resonance structure of D-0 -> K-pi(+) pi(+) pi(-) and D-0 -> K+ pi(-)pi(-)pi(+) decays using pp collision data collected at centre-of-mass energies of 7 and 8 TeV with the LHCb experiment, corresponding to an integrated luminosity of 3.0 f b(-1). The largest contributions to both decay amplitudes are found to come from axial resonances, with decay modes D-0 -> a(1)(1260)(+) K- and D-0 -> K-1(1270/1400)(+)pi(-) being prominent in D-0 -> K-pi(+) pi(+) pi(-) and D-0 -> K+pi(-)pi(-)pi(+), respectively. Precise measurements of the lineshape parameters and couplings of the a(1)(1260)(+), K-1(1270)(-) and K(1460)(-) resonances are made, and a quasi model-independent study of the K(1460)(-) resonance is performed. The coherence factor of the decays is calculated from the amplitude models to be R-K3 pi = 0.459 +/- 0.010 (stat) +/- 0.012 (syst) +/- 0.020 (model), which is consistent with direct measurements. These models will be useful in future measurements of the unitary-triangle angle gamma and studies of charm mixing and CP violation.
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