The CP-violating asymmetry as<inf>sl</inf> is studied using semileptonic decays of B0<inf>s</inf> ; 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> ; B0<inf>s</inf> initial states, ; 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 ; the second systematic. © 2013 The Authors.
Measurement of the flavour-specific CP-violating asymmetry assl in B0s decays
PALANO, Antimo;PAPPAGALLO, MARCO IGNAZIO;
2014-01-01
Abstract
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