Measurement of the oscillation frequency for B0– mixing using hadronic B0 decays

B Flavour Tagging with Artificial Neural Networks for the CDF II Experiment

“…Transitions between particles and their antiparticles, called mixing, have been observed for neutral kaons in the 1960s. In the B 0 system, mixing was observed in 1987 [13], and the mass difference ∆m d has since been measured precisely [1,2,3,4].…”

“…Measuring the frequency provides an experimental test of its theoretical understanding. The oscillation frequency for B 0 mesons has been precisely measured by several experiments, with most important contributions made by the B factory experiments BaBar [1,2] and Belle [3,4]. Until the Large Hadron Collider at CERN takes up full operations, the Tevatron -the world's second most powerful particle accelerator -is the only place where large samples of B 0 s mesons are produced and studied.…”

Publisher’s Note: Improved measurement ofCP-violation parameterssin2ϕ1and|λ

“…We perform a precise measurement of the mixing parameter ∆m d and of the neutral (charged) B meson lifetime τ B 0 (τ B + ) as a byproduct of this procedure. Our previous results are based on a 29.1 fb −1 data sample [6][7][8]; thus our new measurements with a 140 fb −1 data sample provide significant improvements. Changes exist in the analysis with respect to our earlier results.…”

Mixing and CP violation in the B$0\atop{s}$ meson system at CDF; Mélange et violation de CP dans le système des mésons B$0\atop{s}$ à CDF

“…For the B mesons case, the rate at which the B − B transformations occur are characterized by the mass difference of the two mass eigenstates, denoted as ∆m. While the B 0 oscillation was precisely determined at the B factories [2,3], the B 0 s oscillation was recently observed at CDF [4]. Part of this thesis is, indeed, devoted to the description of the analysis which, ending a 20-years-long effort, leaded to the definitive ∆m s measurement.…”