Measurement of the CP-Violating Phase phi(s) in (B)over-bar(s)(0) -> Ds+Ds- Decays

R. Aaij, K. De Bruyn, C. Farinelli, V.A.M. Heijne, T.J. Ketel, R.F. Koopman, A. Kozlinskiy, J. van Leerdam, M.H.M. Merk, S. Oggero, A. Pellegrino, H.G. Raven, H. Snoek, V. Syropoulos, P.N.Y. David, S. Tolk, Collaboration LHCb

Research output: Contribution to JournalArticleAcademicpeer-review


We present a measurement of the CP-violating weak mixing phase φs using the decay B¯s0→Ds+Ds- in a data sample corresponding to 3.0fb-1 of integrated luminosity collected with the LHCb detector in pp collisions at center-of-mass energies of 7 and 8 TeV. An analysis of the time evolution of the system, which does not use the constraint |λ|=1 to allow for the presence of CP violation in decay, yields φs=0.02±0.17(stat)±0.02(syst)rad, |λ|=0.91-0.15+0.18(stat)±0.02(syst). This result is consistent with the standard model expectation.
Original languageEnglish
Article number211801
Pages (from-to)1-9
Number of pages9
JournalPhysical Review Letters
Publication statusPublished - 20 Nov 2014


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