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          Institute: MPI für Physik     Collection: MPI für Physik     Display Documents



ID: 544686.0, MPI für Physik / MPI für Physik
Evidence for direct CP violation in the decay B->D(*)K, D->KsPi+Pi- and measurement of the CKM phase phi3
Authors:The Belle Collaboration; Poluektov, A.; Bondar, A.; Yabsley, B. D.
Date of Publication (YYYY-MM-DD):2010
Title of Journal:Physical Review D
Journal Abbrev.:Phys.Rev.D
Issue / Number:81
Start Page:112002
Audience:Not Specified
Intended Educational Use:No
Abstract / Description:We present a new measurement of the unitarity triangle angle phi3 using a Dalitz plot analysis of the KsPi+Pi- decay of the neutral D meson produced in B->D(*)K decays. The method exploits the interference between D0 and D0bar to extract the angle phi3, strong phase delta and the ratio r of suppressed and allowed amplitudes. We apply this method to a 605 fb-1 data sample collected by the Belle experiment. The analysis uses three decays: B->DK, and B->D*K with D*->DPi0 and D*->Dgamma, as well as the corresponding charge-conjugate modes. From a combined maximum likelihood fit to the three modes, we obtain phi3 = 78.4^+10.8_-11.6 +- 3.6 (syst) +- 8.9 (model) degrees. CP conservation in this process is ruled out at the confidence level (1-CL)=5x10^-4, or 3.5 standard deviations.
Classification / Thesaurus:Belle II
Comment of the Author/Creator:10 pages, 5 figures, 4 tables. Replaced by version published in Phys. Rev. D
External Publication Status:published
Document Type:Article
Communicated by:N.N.
Affiliations:MPI für Physik
Identifiers:LOCALID:MPP-2010-215
URL:http://www.slac.stanford.edu/spires/find/hep/www?r...
URL:http://arXiv.org/abs/arxiv:1003.3360
URL:http://publications.mppmu.mpg.de/?action=search&mp...
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