Measurement ofBdmixing using opposite-side flavor tagging

Measurement of Bd mixing using opposite-side flavor tagging

V. M. Abazov, B. Abbott, M. Abolins, B. S. Acharya, M. Adams, T. Adams, M. Agelou, E. Aguilo, S. H. Ahn, M. Ahsan, G. D. Alexeev, G. Alkhazov, A. Alton, G. Alverson, G. A. Alves, M. Anastasoaie, T. Andeen, S. Anderson, B. Andrieu, M. S. Anzelc, Y. Arnoud, M. Arov, A. Askew, B. Åsman, A. C. S. Assis Jesus, O. Atramentov, C. Autermann, C. Avila, C. Ay, F. Badaud, A. Baden, L. Bagby, B. Baldin, D....

Measurement of B0-B̅0 flavor oscillations using jet- charge and lepton flavor tagging in pp̅ collisions at √s =1.8 TeV

Measurement of the B 0 d - B 0 d flavor oscillation frequency and study of same side flavor tagging of B mesons in pp̄ collisions

B0 d-B 0 d oscillations are observed in “self-tagged” samples of partially reconstructed B mesons decaying into a lepton and a charmed meson collected in pp̄ collisions at √ s = 1.8 TeV. A flavor tagging technique is employed which relies upon the correlation between the flavor of B mesons and the charge of nearby particles. We measure the flavor oscillation frequency to be ∆md = 0.471 +0.078 −0...

Opposite-side flavour tagging of B mesons at the LHCb experiment

The calibration and performance of the opposite-side flavour tagging algorithms used for the measurements of time-dependent asymmetries at the LHCb experiment are described. The algorithms have been developed using simulated events and optimized and calibrated with B+→J/ψK+, B0→J/ψK∗0 and B0→D∗-μ+νμ decay modes with 0.37 fb-1 of data collected in pp collisions at [Formula: see text] during the ...

Extracting Rb and Rc without flavor tagging.

At present, two outstanding discrepancies between experiment and the standard model are the measurements of the hadronic branching fractions Rb and Rc. We note that an independent measurement of these branching fractions may be obtained from the width of hadronic Z decays with a prompt photon, Γqq̄γ, along with the total hadronic decay rate, Γhad, and an additional theoretical assumption. Such a...