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
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چکیده
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 −0.068 ± 0.034 ps−1. The tagging method is also demonstrated in exclusive samples of B+ u → J/ψK+ and B0 d → J/ψK∗0(892), where similar flavor-charge correlations are observed. The tagging characteristics of the various samples are compared with each other, and with Monte Carlo simulations. PACS numbers: 14.40.Nd, 13.20He, 13.25Hw Typeset using REVTEX
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تاریخ انتشار 1998