Journal article
Studies of the resonance structure in D0→K∓π±π±π∓ decays
- Abstract:
- Amplitude models are constructed to describe the resonance structure of D0→K−π+π+π− and D0→K+π−π−π+ 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 fb−1 . The largest contributions to both decay amplitudes are found to come from axial resonances, with decay modes D0→a1(1260)+K− and D0→K1(1270/1400)+π− being prominent in D0→K−π+π+π− and D0→K+π−π−π+ , respectively. Precise measurements of the lineshape parameters and couplings of the a1(1260)+ , K1(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 RK3π=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 γ and studies of charm mixing and CP violation.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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- Files:
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(Preview, Version of record, pdf, 1.6MB, Terms of use)
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- Publisher copy:
- 10.1140/epjc/s10052-018-5758-4
Authors
- Publisher:
- SpringerOpen
- Journal:
- European Physical Journal C More from this journal
- Volume:
- 78
- Article number:
- 443
- Publication date:
- 2018-06-02
- Acceptance date:
- 2018-03-23
- DOI:
- EISSN:
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1434-6052
- ISSN:
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1434-6044
- Pubs id:
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pubs:813337
- UUID:
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uuid:ff0ad89e-5761-4374-9d40-63a555b9c575
- Local pid:
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pubs:813337
- Source identifiers:
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813337
- Deposit date:
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2019-02-13
Terms of use
- Copyright holder:
- CERN
- Copyright date:
- 2018
- Notes:
- © CERN for the benefit of the LHCb collaboration 2018. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
- Licence:
- CC Attribution (CC BY)
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