Abstract
We report improved measurements of time-dependent CP violation parameters for B0(B̄0)→ψ(2S)KS0. This analysis is based on a data sample of 657×106 BB̄ pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB energy-asymmetric e+e- collider. We fully reconstruct one neutral B meson in the ψ(2S)KS0 CP-eigenstate decay channel, and the flavor of the accompanying B meson is identified to be either B0 or B̄0 from its decay products. CP violation parameters are obtained from the asymmetries in the distributions of the proper-time intervals between the two B decays: Sψ(2S)KS0=+0.72±0.09(stat)±0.03(syst), Aψ(2S)KS0=+0.04±0.07(stat)±0.05(syst). These results are in agreement with results from measurements of B0→J/ψK0.
Original language | English |
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Article number | 091103 |
Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |
Volume | 77 |
Issue number | 9 |
DOIs | |
Publication status | Published - 2008 May 13 |
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)