2013/08/31 by LHCb collaboration, R. Aaij, B. Adeva +664 · 52 citations
Physics and Astronomy · #Astrophysics #Asymmetry #Flavour #High-Energy Particle Collisions Research #Large Hadron Collider #Luminosity #Meson #Nuclear physics #Particle Detector Development and Performance #Particle physics #Particle physics theoretical and experimental studies #Physics #hep-ex
paper · pdf · open access · doi:10.1016/j.physletb.2013.12.030
published in Physics Letters B 728, 607-615 (Elsevier BV) · 25 pages, 6 figures, published in Phys. Lett. B
openalex publication_date 2013/12/16 · arxiv created 2014/01/09 · arxiv updated 2014/01/10 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06
The CP-violating asymmetry View the MathML sourceasls is studied using semileptonic decays of View the MathML sourceBs0 and View the MathML sourceB¯s0 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 1.0 fb−11.0 fb−1. The reconstructed final states are View the MathML sourceDs±μ∓, with the View the MathML sourceDs± particle decaying in the ϕπ±ϕπ± mode. The View the MathML sourceDs±μ∓ yields are summed over View the MathML sourceB¯s0 and View the MathML sourceBs0 initial states, and integrated with respect to decay time. Data-driven methods are used to measure efficiency ratios. We obtain View the MathML sourceasls=(−0.06±0.50±0.36)%, where the first uncertainty is statistical and the second systematic.