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First flavor-tagged determination of bounds on mixing-induced CP violation in B_{s}^{0}→J/ψϕ decays

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CDF Collaboration (Including:

Aaltonen, T., Adelman, J., Akimoto, T., Albrow, M. G., Álvarez González, B., Amerio, S., Amidei, D., Anastassov, A., Annovi, A., Antos, J. et al.
). (2008) First flavor-tagged determination of bounds on mixing-induced CP violation in B_{s}^{0}→J/ψϕ decays. Physical Review Letters, Vol.100 (No.16). Article no. 161802. doi:10.1103/PhysRevLett.100.161802

Research output not available from this repository, contact author.
Official URL: http://dx.doi.org/10.1103/PhysRevLett.100.161802

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Abstract

This Letter describes the first determination of bounds on the CP-violation parameter 2βs using Bs0 decays in which the flavor of the bottom meson at production is identified. The result is based on approximately 2000 Bs0→J/ψϕ decays reconstructed in a 1.35  fb-1 data sample collected with the CDF II detector using pp¯ collisions produced at the Fermilab Tevatron. We report confidence regions in the two-dimensional space of 2βs and the decay-width difference ΔΓ. Assuming the standard model predictions of 2βs and ΔΓ, the probability of a deviation as large as the level of the observed data is 15%, corresponding to 1.5 Gaussian standard deviations.

Item Type: Journal Article
Subjects: Q Science > QC Physics
Divisions: Faculty of Science > Physics
Journal or Publication Title: Physical Review Letters
Publisher: American Physical Society
ISSN: 0031-9007
Official Date: 25 April 2008
Dates:
DateEvent
25 April 2008Published
Volume: Vol.100
Number: No.16
Page Range: Article no. 161802
DOI: 10.1103/PhysRevLett.100.161802
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Funder: U.S. Department of Energy, National Science Foundation (NSF), Istituto Nazionale di Fisica Nucleare, Ministry of Education, Culture, Sports, Science and Technology of Japan, Natural Sciences and Engineering Research Council (Canada) (NSERC), National Science Council of the Republic of China, Swiss National Science Foundation, A.P. Sloan Foundation, Bundesministerium für Bildung und Forschung (Germany), Korean Science and Engineering Foundation, Korean Research Foundation, Science and Technology Facilities Council (Great Britain) (STFC), Royal Society (UK), Institut National de Physique Nucleaire et Physique des Particules/ CNRS, Russian Foundation for Basic Research, Comisión Interministerial de Ciencia y Tecnología (Spain), European Community's Human Potential Programme (ECHPP), Slovak R&D Agency, Academy of Finland

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