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Measurement of the CP Violation Parameter A Γ in D0 →k+K-and D0 →π+π-Decays
- Author(s): Aaij, R
- Adeva, B
- Adinolfi, M
- Ajaltouni, Z
- Akar, S
- Albrecht, J
- Alessio, F
- Alexander, M
- Ali, S
- Alkhazov, G
- Alvarez Cartelle, P
- Alves, AA
- Amato, S
- Amerio, S
- Amhis, Y
- An, L
- Anderlini, L
- Andreassi, G
- Andreotti, M
- Andrews, JE
- Appleby, RB
- Archilli, F
- D'Argent, P
- Arnau Romeu, J
- Artamonov, A
- Artuso, M
- Aslanides, E
- Auriemma, G
- Baalouch, M
- Babuschkin, I
- Bachmann, S
- Back, JJ
- Badalov, A
- Baesso, C
- Baker, S
- Balagura, V
- Baldini, W
- Barlow, RJ
- Barschel, C
- Barsuk, S
- Barter, W
- Baryshnikov, F
- Baszczyk, M
- Batozskaya, V
- Batsukh, B
- Battista, V
- Bay, A
- Beaucourt, L
- Beddow, J
- Bedeschi, F
- Bediaga, I
- Beiter, A
- Bel, LJ
- Bellee, V
- Belloli, N
- Belous, K
- Belyaev, I
- Ben-Haim, E
- Bencivenni, G
- Benson, S
- Beranek, S
- Berezhnoy, A
- Bernet, R
- Bertolin, A
- Betancourt, C
- Betti, F
- Bettler, MO
- Van Beuzekom, M
- Bezshyiko, I
- Bifani, S
- Billoir, P
- Bird, T
- Birnkraut, A
- Bitadze, A
- Bizzeti, A
- Blake, T
- Blanc, F
- Blouw, J
- Blusk, S
- Bocci, V
- Boettcher, T
- Bondar, A
- Bondar, N
- Bonivento, W
- Bordyuzhin, I
- Borgheresi, A
- Borghi, S
- Borisyak, M
- Borsato, M
- Bossu, F
- Boubdir, M
- Bowcock, TJV
- Bowen, E
- et al.
Published Web Location
http://doi.org/10.1103/PhysRevLett.118.261803No data is associated with this publication.
Abstract
© 2017 CERN. 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 3 fb-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.