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Download or read book Observation of B^0_s -b-bar^0_s Oscillations written by A. Belloni and published by . This book was released on 2006 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors report the observation of B{sub s}{sup 0} - {bar B}{sub s}{sup 0} oscillations using 1 fb{sup -1} of data from p{bar p} collisions with the CDF II detector at the Fermilab Tevatron. They measure the probability, as a function of proper decay time, that the B{sub s}{sup 0} decays with the same, or opposite, flavor as its flavor at production, which is determined using opposite-side and same-side flavor identification methods. They find a signal consistent with B{sub s}{sup 0} - {bar B}{sub s}{sup 0} oscillations, with a significance greater than 5{sigma}. They measure {Delta}m{sub s} = 17.77 {+-} 0.10(stat) {+-} 0.07(syst) ps{sup -1}.