Journal article
A study of B0s meson oscillation using D-s-lepton correlations
G Abbiendi, C Ainsley, PF Åkesson, G Alexander, J Allison, G Anagnostou, KJ Anderson, S Arcelli, S Asai, D Axen, G Azuelos, I Bailey, AH Ball, E Barberio, RJ Barlow, T Behnke, KW Bell, G Bella, A Bellerive, G Benelli Show all
European Physical Journal C | SPRINGER | Published : 2001
Abstract
From data collected around the Z resonance by the OPAL detector at LEP, a sample of B0s decays was obtained using D-s ℓ+ combinations, where the D-s was fully reconstructed in the φπ-, K*0K- and K0sK- decay channels or partially reconstructed in the φℓ-v̄(X) decay channel. These events were used to study B0s oscillation. The flavor (b or b̄) at decay was determined from the lepton charge while the flavor at production was determined from a combination of techniques. The expected sensitivity of the experiment is 4.1 ps-1. The experiment was not able to resolve the oscillatory behavior, and we deduced that the B0s oscillation frequency Δms > 1.0 ps-1 at the 95% confidence level.