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

The LHCb Collaboration; W. Barter; F. Betti; A. Bohare; E. Buchanan; P. E. L. Clarke; R. Currie; S. Eisenhardt; K. Farmer; S. Gambetta; Y. Liu; F. Muheim; M. Needham; F. Oliva; R.H. O'Neil; O. Ozcelik; M. Richardson-Slipper; G. Sarpis; L. Soares Lavra; C. Vrahas; M. R. J. Williams

doi:10.1103/PhysRevLett.133.101803

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

The LHCb Collaboration
, W. Barter
, F. Betti
, A. Bohare
, E. Buchanan
, P. E. L. Clarke
, R. Currie
, S. Eisenhardt
, K. Farmer
, S. Gambetta
, Y. Liu
, F. Muheim
, M. Needham
, F. Oliva
, R.H. O'Neil
, O. Ozcelik
, M. Richardson-Slipper
, G. Sarpis
, L. Soares Lavra
, C. Vrahas

M. R. J. Williams

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Article number	101803
Pages (from-to)	1-12
Number of pages	12
Journal	Physical Review Letters
Volume	133
Issue number	10
Early online date	5 Sept 2024
DOIs	https://doi.org/10.1103/PhysRevLett.133.101803
Publication status	Published - 6 Sept 2024

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10.1103/PhysRevLett.133.101803Licence: Creative Commons: Attribution (CC-BY)

3 Active
4 Finished

Experimental Particle Physics at the University of Edinburgh
Leonidopoulos, C. (Principal Investigator)
Science and Technology Facilities Council
1/04/23 → 30/09/26
Project: Research
Experimental Particle Physics at the University of Edinburgh
Leonidopoulos, C. (Principal Investigator)
Science and Technology Facilities Council
1/10/22 → 30/09/26
Project: Research
Beautiful Flavours: Discovering New Physics with B-hadrons and Tau-leptons
Barter, W. (Principal Investigator)
UKRI (formerly RCUK)
1/07/22 → 11/08/27
Project: Research

Cite this

The LHCb Collaboration, Barter, W., Betti, F., Bohare, A., Buchanan, E., Clarke, P. E. L., Currie, R., Eisenhardt, S., Farmer, K., Gambetta, S., Liu, Y., Muheim, F., Needham, M., Oliva, F., O'Neil, R. H., Ozcelik, O., Richardson-Slipper, M., Sarpis, G., Lavra, L. S., ... Williams, M. R. J. (2024). Search for Time-Dependent CP Violation in D0→π+π-π0 Decays. Physical Review Letters, 133(10), 1-12. Article 101803. https://doi.org/10.1103/PhysRevLett.133.101803

@article{557b910a7cb34aa8a3d0992d779dfe92,

title = "Search for Time-Dependent CP Violation in D0→π+π-π0 Decays",

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.",

author = "\{The LHCb Collaboration\} and W. Barter and F. Betti and A. Bohare and E. Buchanan and Clarke, \{P. E. L.\} and R. Currie and S. Eisenhardt and K. Farmer and S. Gambetta and Y. Liu and F. Muheim and M. Needham and F. Oliva and R.H. O'Neil and O. Ozcelik and M. Richardson-Slipper and G. Sarpis and Lavra, \{L. Soares\} and C. Vrahas and Williams, \{M. R. J.\}",

year = "2024",

month = sep,

day = "6",

doi = "10.1103/PhysRevLett.133.101803",

language = "English",

volume = "133",

pages = "1--12",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "10",

}

The LHCb Collaboration, Barter, W, Betti, F, Bohare, A, Buchanan, E , Clarke, PEL , Currie, R , Eisenhardt, S, Farmer, K, Gambetta, S, Liu, Y, Muheim, F , Needham, M , Oliva, F, O'Neil, RH, Ozcelik, O, Richardson-Slipper, M, Sarpis, G, Lavra, LS, Vrahas, C & Williams, MRJ 2024, 'Search for Time-Dependent CP Violation in D0→π+π-π0 Decays', Physical Review Letters, vol. 133, no. 10, 101803, pp. 1-12. https://doi.org/10.1103/PhysRevLett.133.101803

TY - JOUR

T1 - Search for Time-Dependent CP Violation in D0→π+π-π0 Decays

AU - The LHCb Collaboration

AU - Barter, W.

AU - Betti, F.

AU - Bohare, A.

AU - Buchanan, E.

AU - Clarke, P. E. L.

AU - Currie, R.

AU - Eisenhardt, S.

AU - Farmer, K.

AU - Gambetta, S.

AU - Liu, Y.

AU - Muheim, F.

AU - Needham, M.

AU - Oliva, F.

AU - O'Neil, R.H.

AU - Ozcelik, O.

AU - Richardson-Slipper, M.

AU - Sarpis, G.

AU - Lavra, L. Soares

AU - Vrahas, C.

AU - Williams, M. R. J.

PY - 2024/9/6

Y1 - 2024/9/6

N2 - 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.

AB - 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.

U2 - 10.1103/PhysRevLett.133.101803

DO - 10.1103/PhysRevLett.133.101803

M3 - Article

SN - 0031-9007

VL - 133

SP - 1

EP - 12

JO - Physical Review Letters

JF - Physical Review Letters

IS - 10

M1 - 101803

ER -

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

Abstract

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Projects

Experimental Particle Physics at the University of Edinburgh

Experimental Particle Physics at the University of Edinburgh

Beautiful Flavours: Discovering New Physics with B-hadrons and Tau-leptons

Cite this