Title
Measurement of the <tex>$B_{s}^{0}-\overline{B}$$_{s}^{0}$</tex> oscillation frequency
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
[*]
Subject
Physics
ISI
000239690900014
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
We present the first precise measurement of the Bs0-B&#773; s0 oscillation frequency Δms. We use 1  fb-1 of data from pp&#773; collisions at √s=1.96   TeV collected with the CDF II detector at the Fermilab Tevatron. The sample contains signals of 3600 fully reconstructed hadronic Bs decays and 37 000 partially reconstructed semileptonic Bs decays. We measure the probability as a function of proper decay time that the Bs decays with the same, or opposite, flavor as the flavor at production, and we find a signal consistent with Bs0-B&#773; s0 oscillations. The probability that random fluctuations could produce a comparable signal is 0.2%. Under the hypothesis that the signal is due to Bs0-B&#773; s0 oscillations, we measure Δms=17.31-0.18+0.33(stat)±0.07(syst)  ps-1 and determine |Vtd/Vts|=0.208-0.002+0.001(expt)-0.006+0.008(theor).
Full text (open access)
https://repository.uantwerpen.be/docman/irua/13f952/d74c7a48.pdf
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