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Direct limits on the B(s)(0) oscillation frequency
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2006 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 97, no 2, 021802- p.Article in journal (Refereed) Published
Abstract [en]

We report results of a study of the B(s)(0) oscillation frequency using a large sample of B(s)(0) semileptonic decays corresponding to approximately 1 fb(-1) of integrated luminosity collected by the D0 experiment at the Fermilab Tevatron Collider in 2002-2006. The amplitude method gives a lower limit on the B(s)(0) oscillation frequency at 14.8 ps(-1) at the 95% C.L. At Delta m(s)=19 ps(-1), the amplitude deviates from the hypothesis A=0 (1) by 2.5 (1.6) standard deviations, corresponding to a two-sided C.L. of 1% (10%). A likelihood scan over the oscillation frequency, Delta m(s), gives a most probable value of 19 ps(-1) and a range of 17 <Delta m(s)< 21 ps(-1) at the 90% C.L., assuming Gaussian uncertainties. This is the first direct two-sided bound measured by a single experiment. If Delta m(s) lies above 22 ps(-1), then the probability that it would produce a likelihood minimum similar to the one observed in the interval 16-22 ps(-1) is (5.0 +/- 0.3)%.

Place, publisher, year, edition, pages
2006. Vol. 97, no 2, 021802- p.
Keyword [en]
DETECTOR, PHYSICS, IMPACT
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Physical Sciences
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URN: urn:nbn:se:kth:diva-37410DOI: 10.1103/PhysRevLett.97.021802ISI: 000239057200015Scopus ID: 2-s2.0-33749069884OAI: oai:DiVA.org:kth-37410DiVA: diva2:433788
Available from: 2011-08-11 Created: 2011-08-11 Last updated: 2017-12-08Bibliographically approved

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Strandberg, Jonas

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