Aaij, R, Abellán Beteta, C, Adeva, B, Adinolfi, M, Affolder, A, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M et al (show 90 more authors)
(2016)
First Observation of D0-D-0 Oscillations in D0 →k+π-π+π- Decays and Measurement of the Associated Coherence Parameters
Physical Review Letters, 116 (24).
241801-.
ISSN 0031-9007, 1079-7114
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Abstract
Charm meson oscillations are observed in a time-dependent analysis of the ratio of D0→K+π-π+π- to D0→K-π+π-π+ decay rates, using data corresponding to an integrated luminosity of 3.0 fb-1 recorded by the LHCb experiment. The measurements presented are sensitive to the phase-space averaged ratio of doubly Cabibbo-suppressed to Cabibbo-favored amplitudes rDK3π and the product of the coherence factor RDK3π and a charm mixing parameter yK3π′. The constraints measured are rDK3π=(5.67±0.12)×10-2, which is the most precise determination to date, and RDK3πyK3π′=(0.3±1.8)×10-3, which provides useful input for determinations of the CP-violating phase γ in B±→DK±, D→Kπ±ππ± decays. The analysis also gives the most precise measurement of the D0→K+π-π+π- branching fraction, and the first observation of D0-D-0 oscillations in this decay mode, with a significance of 8.2 standard deviations.
| Item Type: | Article |
|---|---|
| Additional Information: | All figures and tables, along with any supplementary material and additional information, are available at https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2015-057.html |
| Uncontrolled Keywords: | LHCb Collaboration |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 01 Jul 2016 09:31 |
| Last Modified: | 22 Jan 2026 07:35 |
| DOI: | 10.1103/PhysRevLett.116.241801 |
| Related Websites: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3001969 |
| Disclaimer: | The University of Liverpool is not responsible for content contained on other websites from links within repository metadata. Please contact us if you notice anything that appears incorrect or inappropriate. |
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