Journal article
An updated study of B meson oscillations using dilepton events
K Ackerstaff, G Alexander, J Allison, N Altekamp, KJ Anderson, S Anderson, S Arcelli, S Asai, D Axen, G Azuelos, AH Ball, E Barberio, RJ Barlow, R Bartoldus, JR Batley, S Baumann, J Bechtluft, C Beeston, T Behnke, AN Bell Show all
Zeitschrift Fur Physik C Particles and Fields | SPRINGER | Published : 1997
Abstract
This paper reports a study of B meson oscillations using hadronic Z0 decays with two identified leptons, and updates a previous publication by including data collected in 1994. Decay times are reconstructed for each of the semileptonic B decays by forming vertices which include the lepton and by estimating the B meson momentum. The mass difference, Δmd, between the two mass eigenstates in the Bd0 system is measured to be 0.430 ± 0.043 -0.030+0.028 ps-1, where the first error is statistical and the second error is systematic. For the Bs0 system, a lower limit of Δms > 2.2 ps-1 is obtained at 95% C.L. © Springer-Verlag 1997.
Grants
Awarded by Israel Academy of Sciences and Humanities