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 - Článek v odborném periodiku
Aaltonen, T. - Gonzalez, B.A. - Amerio, S. - Lysák, Roman … celkem 476 autorů
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
Grant CEP: GA MŠMT LC527
Výzkumný záměr: CEZ:AV0Z10100502
Klíčová slova: CP violation * B/s0 hadronic decay * statistical analysis * TEVATRON Coll * Bayesian * CDF
Kód oboru RIV: BF - Elementární částice a fyzika vys. energií
Impakt faktor: 4.691, rok: 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.
Trvalý link: http://hdl.handle.net/11104/0217973