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Journal articles
Measurement of the CP violation parameter AΓ in D0→K+K− and D0→π+π− decays
R. Aaij
L. Beaucourt
1
M. Chefdeville
1
D. Decamp
1
N. Déléage
1
P. Ghez
1
J.-F. Marchand
1
M.-N. Minard
1
B. Pietrzyk
1
S. t'Jampens
1
V. Tisserand
1
E. Tournefier
1
Z. Xu
1
J. Arnau Romeu
2
E. Aslanides
2
J. Cogan
2
K. De Bruyn
2
R. Legac
2
O. Leroy
2
G. Mancinelli
2
M. Martin
2
A. Mordà
2
J. Serrano
2
A. Tayduganov
2
A. Tsaregorodtsev
2
Z.J. Ajaltouni
3
M. Baalouch
3
E. Cogneras
3
O. Deschamps
3
G. Gazzoni
3
C. Hadjivasiliou
3
P. Henrard
3
M. Kozeiha
3
R. Lefèvre
3
J. Maratas
3
S. Monteil
3
P. Perret
3
M. Vernet
3
R. Aaij
Author
L. Beaucourt 1
Author
M. Chefdeville 1
Author IdHAL : maximilien-chefdeville arXiv : https://arxiv.org/a/Maximilien Chefdeville MC ORCID : https://orcid.org/0000-0002-6553-6493
D. Decamp 1
Author
B. Pietrzyk 1
Author
S. t'Jampens 1
Author IdHAL : stephane-tjampens ORCID : https://orcid.org/0000-0003-4249-6641
V. Tisserand 1
Author
E. Tournefier 1
Author
Z. Xu 1
Author
J. Arnau Romeu 2
Author
E. Aslanides 2
Author
J. Cogan 2
Author IdHAL : julien-cogan ORCID : https://orcid.org/0000-0001-7194-7566
K. De Bruyn 2
Author
R. Legac 2
Author
O. Leroy 2
Author IdHAL : olivier-leroy ORCID : https://orcid.org/0000-0002-2589-240X
G. Mancinelli 2
Author
M. Martin 2
Author
A. Mordà 2
Author
J. Serrano 2
Author IdHAL : justine-serrano arXiv : https://arxiv.org/a/Justine Serrano ORCID : https://orcid.org/0000-0003-2489-7812
A. Tayduganov 2
Author
A. Tsaregorodtsev 2
Author
Z.J. Ajaltouni 3
Author
M. Baalouch 3
Author
E. Cogneras 3
Author IdHAL : eric-cogneras ORCID : https://orcid.org/0000-0002-8933-9427
P. Perret 3
Author IdHAL : pascal-perret ORCID : https://orcid.org/0000-0002-5732-4343
M. Vernet 3
Author
1
LAPP - Laboratoire d'Annecy de Physique des Particules (9 Chemin de Bellevue - BP 110 - 74941 Annecy-le-Vieux CEDEX - France - France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- USMB [Université de Savoie] [Université de Chambéry] - Université Savoie Mont Blanc (27, rue Marcoz - 73000 Chambéry - France)
- CNRS - Centre National de la Recherche Scientifique : UMR5814 (France)
2
CPPM - Centre de Physique des Particules de Marseille (163, avenue de Luminy - Case 902 - 13288 Marseille cedex 09 - France)
- AMU - Aix Marseille Université : UMR7346 / UMR6550 / UMR6450 / URA6450 (Aix-Marseille Université Jardins du Pharo 58 Boulevard Charles Livon 13284 Marseille cedex 7 - France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- CNRS - Centre National de la Recherche Scientifique : UMR7346 / UMR6550 / UMR6450 / URA6450 (France)
3
LPC - Laboratoire de Physique Corpusculaire - Clermont-Ferrand (Campus des Cézeaux, 24 avenue des Landais, BP 80026, 63171 Aubière Cedex - France)
- UBP - Université Blaise Pascal - Clermont-Ferrand 2 (34, avenue Carnot - BP 185 / 63006 Clermont-Ferrand cedex - France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- CNRS - Centre National de la Recherche Scientifique : UMR6533 (France)
Abstract : Asymmetries in the time-dependent rates of D0→K+K− and D0→π+π− decays are measured in a pp collision data sample collected with the LHCb detector during LHC Run~1, corresponding to an integrated luminosity of 3fb−1. The asymmetries in effective decay widths between D0 and D¯¯¯¯0 decays, sensitive to indirect CP violation, are measured to be AΓ(K+K−)=(−0.30±0.32±0.10)×10−3 and AΓ(π+π−)=(0.46±0.58±0.12)×10−3, where the first uncertainty is statistical and the second systematic. These measurements show no evidence for CP violation and improve on the precision of the previous best measurements by nearly a factor of two.
Document type :
Journal articles
Complete list of metadata
http://hal.in2p3.fr/in2p3-01473878
Contributor : Claudine Bombar Connect in order to contact the contributor
Submitted on : Wednesday, February 22, 2017 - 11:27:23 AM
Last modification on : Friday, January 7, 2022 - 3:54:41 AM
Contributor : Claudine Bombar Connect in order to contact the contributor
Submitted on : Wednesday, February 22, 2017 - 11:27:23 AM
Last modification on : Friday, January 7, 2022 - 3:54:41 AM
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Identifiers
- HAL Id : in2p3-01473878, version 1
- ARXIV : 1702.06490
- DOI : 10.1103/PhysRevLett.118.261803
Collections
IN2P3 | CNRS | LAPP | UNIV-SAVOIE | CPPM | UNIV-AMU | LPC-CLERMONT | PRES_CLERMONT | UGA
Citation
R. Aaij, L. Beaucourt, M. Chefdeville, D. Decamp, N. Déléage, et al.. Measurement of the CP violation parameter AΓ in D0→K+K− and D0→π+π− decays. Physical Review Letters, American Physical Society, 2017, 118, pp.261803. ⟨10.1103/PhysRevLett.118.261803⟩. ⟨in2p3-01473878⟩
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