Faithin Omaha eBook Collection

Download or read book Measurement of the B0(s) - Anti-B0(s) Oscillation Frequency written by and published by . This book was released on 2006 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present the first measurement of the B{sub s}°-{bar B}{sub s}° oscillation frequency [Delta]m{sub s}. They use 1 fb−1 of data from p{bar p} 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 B{sub s} decays and 37,000 partially reconstructed semileptonic B{sub s} decays. They measure the probability as a function of proper decay time that the B{sub s} decays with the same, or opposite, flavor as the flavor at production and they find a signal consistent with B{sub s}°-{bar B}{sub s}° oscillations. The probability that random fluctuations could produce a comparable signal is 0.2%. Under the hypothesis that the signal is due to B{sub s}°-{bar B}{sub s}° oscillations, they measure [Delta]m{sub s} = 17.31{sub -0.18}{sup +0.33}(stat.) ± 0.07(syst.) ps−1 and determine.