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Search for Time-Dependent CP Violation in D0 →π+π-π0 Decays

Aaij, R. ; Ruiz-Vidal, Joan LU and Zunica, G. (2024) In Physical Review Letters 133(10).
Abstract
A measurement of time-dependent CP violation in D0→π+π-π0 decays using a pp collision data sample collected by the LHCb experiment in 2012 and from 2015 to 2018, corresponding to an integrated luminosity of 7.7 fb-1, is presented. The initial flavor of each D0 candidate is determined from the charge of the pion produced in the D∗(2010)+→D0π+ decay. The decay D0→K-π+π0 is used as a control channel to validate the measurement procedure. The gradient of the time-dependent CP asymmetry ΔY in D0→π+π-π0 decays is measured to be ΔY=(-1.3±6.3±2.4)×10-4, where the first uncertainty is statistical and the second is systematic, which is compatible with CP conservation. © 2024 CERN., for the LHCb Collaboration. Published by the American Physical... (More)
A measurement of time-dependent CP violation in D0→π+π-π0 decays using a pp collision data sample collected by the LHCb experiment in 2012 and from 2015 to 2018, corresponding to an integrated luminosity of 7.7 fb-1, is presented. The initial flavor of each D0 candidate is determined from the charge of the pion produced in the D∗(2010)+→D0π+ decay. The decay D0→K-π+π0 is used as a control channel to validate the measurement procedure. The gradient of the time-dependent CP asymmetry ΔY in D0→π+π-π0 decays is measured to be ΔY=(-1.3±6.3±2.4)×10-4, where the first uncertainty is statistical and the second is systematic, which is compatible with CP conservation. © 2024 CERN., for the LHCb Collaboration. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3. (Less)
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Contribution to journal
publication status
published
subject
keywords
Control channels, CP violations, Data sample, Integrated luminosity, Measurement procedures, Measurements of, Time dependent, Time-dependent CP asymmetry, Uncertainty, adult, article, controlled study, human
in
Physical Review Letters
volume
133
issue
10
article number
101803
publisher
American Physical Society
external identifiers
  • scopus:85203444120
  • pmid:39303243
ISSN
1079-7114
DOI
10.1103/PhysRevLett.133.101803
language
English
LU publication?
yes
id
b394f22d-9e00-40bf-aeaa-9fc0c11f13ea
date added to LUP
2024-12-18 09:36:53
date last changed
2025-04-04 13:57:58
@article{b394f22d-9e00-40bf-aeaa-9fc0c11f13ea,
  abstract     = {{A measurement of time-dependent CP violation in D0→π+π-π0 decays using a pp collision data sample collected by the LHCb experiment in 2012 and from 2015 to 2018, corresponding to an integrated luminosity of 7.7 fb-1, is presented. The initial flavor of each D0 candidate is determined from the charge of the pion produced in the D∗(2010)+→D0π+ decay. The decay D0→K-π+π0 is used as a control channel to validate the measurement procedure. The gradient of the time-dependent CP asymmetry ΔY in D0→π+π-π0 decays is measured to be ΔY=(-1.3±6.3±2.4)×10-4, where the first uncertainty is statistical and the second is systematic, which is compatible with CP conservation. © 2024 CERN., for the LHCb Collaboration. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.}},
  author       = {{Aaij, R. and Ruiz-Vidal, Joan and Zunica, G.}},
  issn         = {{1079-7114}},
  keywords     = {{Control channels; CP violations; Data sample; Integrated luminosity; Measurement procedures; Measurements of; Time dependent; Time-dependent CP asymmetry; Uncertainty; adult; article; controlled study; human}},
  language     = {{eng}},
  number       = {{10}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review Letters}},
  title        = {{Search for Time-Dependent CP Violation in D0 →π+π-π0 Decays}},
  url          = {{http://dx.doi.org/10.1103/PhysRevLett.133.101803}},
  doi          = {{10.1103/PhysRevLett.133.101803}},
  volume       = {{133}},
  year         = {{2024}},
}