Measurement of the flavour-specific CP-violating asymmetry a(sl)(s) in B-s(0) decays

R. Aaij, J.F.J. van den Brand, L.C. Garcia, K. De Bruyn, C. Farinelli, V.A.M. Heijne, T.J. Ketel, R. Koopman, D.M. Lambert, R.W. Lambert, J. van Leerdam, Y.J. Li, M.H.M. Merk, S. Oggero, H.G. Raven, M. Schiller, V. Syropoulos, S. Tolk, M. Garcia, S. Wu

Research output: Contribution to JournalArticleAcademicpeer-review


The CP-violating asymmetry as<inf>sl</inf> is studied using semileptonic decays of B0<inf>s</inf> and B0<inf>s</inf> mesons produced in pp collisions at a centre-of-mass energy of 7 TeV at the LHC, exploiting a data sample corresponding to an integrated luminosity of 1.0fb-1. The reconstructed final states are D±<inf>s</inf>μ, with the D±<inf>s</inf> particle decaying in the φπ± mode. The D±<inf>s</inf>μ yields are summed over B̄0<inf>s</inf> and B0<inf>s</inf> initial states, and integrated with respect to decay time. Data-driven methods are used to measure efficiency ratios. We obtain as<inf>sl</inf>=(-0.06±0.50±0.36)%, where the first uncertainty is statistical and the second systematic. © 2013 The Authors.
Original languageEnglish
Pages (from-to)607-615
JournalPhysics Letters B
Publication statusPublished - 2014

Bibliographical note

PT: J; NR: 22; TC: 15; J9: PHYS LETT B; PG: 9; GA: 301TW; UT: WOS:000330556000091


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