Measurement of the CP-violating phase beta(s)J/psi phi in B-s(0) -> J/psi phi decays with the CDF II detector

0389078 - FZÚ 2013 RIV US eng J - Journal Article
Aaltonen, T. - Gonzalez, B.A. - Amerio, S. - Lysák, Roman … Total 476 authors
Measurement of the CP-violating phase beta(s)J/psi phi in B-s(0) -> J/psi phi decays with the CDF II detector.
Physical Review D: Particles, Fields, Gravitation and Cosmology. Roč. 85, č. 7 (2012), "072002-1"-"072002-32". ISSN 1550-7998
R&D Projects: GA MŠMT LC527
Institutional research plan: CEZ:AV0Z10100502
Keywords : CP violation * B/s0 hadronic decay * statistical analysis * TEVATRON Coll * Bayesian * CDF
Subject RIV: BF - Elementary Particles and High Energy Physics
Impact factor: 4.691, year: 2012
http://link.aps.org/doi/10.1103/PhysRevD.85.072002

We present a measurement of the CP-violating parameter beta(J/psi phi)(s) using approximately 6500 B-s(0) -> J/psi phi decays reconstructed with the CDF II detector in a sample of p (p) over bar collisions at root 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 beta(J/psi phi)(s) is an element of [0.02, 0.52] boolean OR [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.
Permanent Link: http://hdl.handle.net/11104/0217973