Measurement of the CP-violating phase β[subscript s][superscript J/ψϕ] in B[subscript s][superscript 0]→J/ψϕ decays with the CDF II detector
Name
Aaltonen-2012-Measurement of the CP-violating phase.pdf
Size
1.43 MB
Format
Adobe PDF
Checksum (MD5)
e9eba4dae1fd8e1f6d15ddfc97c6060d
Author(s)
Gomez-Ceballos, Guillelmo
Goncharov, Maxim
Paus, Christoph M. E.
Date Issued
April 2012
Journal
Physical Review D
Publisher
American Physical Society
Citation
T. Aaltonen et al. (CDF Collaboration). "Measurement of the CP-violating phase β[subscript s][superscript J/ψϕ] in B[subscript s][superscript 0]→J/ψϕ decays with the CDF II detector" Physical Review D 85, 072002 (2012). © 2012 American Physical Society
Version
Final published version
Abstract
We present a measurement of the CP-violating parameter βsJ/ψϕ using approximately 6500 Bs0→J/ψϕ decays reconstructed with the CDF II detector in a sample of pp̅ collisions at √s=1.96 TeV corresponding to 5.2 fb-1 integrated luminosity produced by the Tevatron collider at Fermilab. We find the CP-violating phase to be within the range βsJ/ψϕЄ[0.02,0.52]u[1.08,1.55] at 68% confidence level where the coverage property of the quoted interval is guaranteed using a frequentist statistical analysis. This result is in agreement with the standard model expectation at the level of about one Gaussian standard deviation. We consider the inclusion of a potential S-wave contribution to the Bs0→J/ψK+K- final state which is found to be negligible over the mass interval 1.009
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1103/PhysRevD.85.072002
