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Measurement of the CP-violating phase ϕsJ/ψϕ using the flavor-tagged decay Bs0→J/ψϕ in 8  fb-1 of pp̅  collisions
Stockholm University, Faculty of Science, Department of Physics. (Elementarpartikelfysik)
2012 (English)In: Physical Review D. Particles and fields, ISSN 0556-2821, E-ISSN 1089-4918, Vol. 85, no 3, # 032006- p.Article in journal (Refereed) Published
Abstract [en]

We report an updated measurement of the CP-violating phase, ϕsJ/ψϕ, and the decay-width difference for the two mass eigenstates, ΔΓs, from the flavor-tagged decay Bs0→J/ψϕ. The data sample corresponds to an integrated luminosity of 8.0  fb-1 accumulated with the D0 detector using pp̅        collisions at √s=1.96  TeV produced at the Fermilab Tevatron collider. The 68% Bayesian credibility intervals, including systematic uncertainties, are ΔΓs=0.163-0.064+0.065  ps-1 and ϕsJ/ψϕ=-0.55-0.36+0.38. The p-value for the Standard Model point is 29.8%.

Place, publisher, year, edition, pages
2012. Vol. 85, no 3, # 032006- p.
National Category
Subatomic Physics
Research subject
Physics
Identifiers
URN: urn:nbn:se:su:diva-74252DOI: 10.1103/PhysRevD.85.032006ISI: 000300570300003OAI: oai:DiVA.org:su-74252DiVA: diva2:507321
Projects
D0
Funder
Swedish Research Council
Note

421

Available from: 2012-03-03 Created: 2012-03-03 Last updated: 2017-12-07Bibliographically approved

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