Measurements of CP violation in charmless two-body B decays at LHCb

Soler, F.J.P. (2013) Measurements of CP violation in charmless two-body B decays at LHCb. In: LHCb-CONF-2012-007, 11 Mar 2012, p. 323.

Abstract

Using an integrated luminosity of 0.69 fb−1 collected by LHCb in 2011, we report measurements of direct and mixing-induced CP violation in B0 → π +π − and B0 s → K+K− decays. We obtain A dir ππ = 0.11 ± 0.21 ± 0.03, A mix ππ = −0.56 ± 0.17 ± 0.03, A dir KK = 0.02 ± 0.18 ± 0.04, A mix KK = 0.17 ± 0.18 ± 0.05, where the first uncertainties are statistical and the second systematic. The correlations are found to be ρ(Adir ππ, Amix ππ ) = −0.34 and ρ(Adir KK, Amix KK) = −0.10. The measurements of Adir ππ and Amix ππ are compatible with those from the B factories and yield 3.2σ evidence of mixing-induced CP violation, whereas Adir KK and Amix KK are measured for the first time ever.

• Item Type: Conference Proceedings
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Soler, Professor Paul
• Authors: Soler, F.J.P.
• College/School: College of Science and Engineering > School of Physics and Astronomy
• Journal Name: PoS