{ "id": "1209.3896", "version": "v1", "published": "2012-09-18T09:59:52.000Z", "updated": "2012-09-18T09:59:52.000Z", "title": "Measurement of D0-D0bar Mixing and CP Violation in Two-Body D0 Decays", "authors": [ "J. P. Lees", "others" ], "comment": "15 pages, 15 postscript figures, submitted to PRD", "doi": "10.1103/PhysRevD.87.012004", "categories": [ "hep-ex" ], "abstract": "We present a measurement of D0-D0bar mixing and CP violation using the ratio of lifetimes simultaneously extracted from a sample of D0 mesons produced through the flavor-tagged process D*+ -> D0 pi+, where D0 decays to K-+pi+-, K-K+, or pi-pi+, along with the untagged decays D0 -> K-+pi+- and D0 -> K-K+. The lifetimes of the CP-even, Cabibbo-suppressed modes K-K+ and pi-pi+ are compared to that of the CP-mixed mode K-+pi+- in order to measure yCP and DeltaY. We obtain yCP = [0.72 +- 0.18 (stat) +- 0.12 (syst)]% and DeltaY = [0.09 +- 0.26 (stat) +- 0.06 (syst)]%, where DeltaY constrains possible CP violation. The yCP result excludes the null mixing hypothesis at 3.3 sigma significance. This analysis is based on an integrated luminosity of 468 fb-1 collected with the BaBar detector at the PEP-II asymmetric-energy e+e- collider.", "revisions": [ { "version": "v1", "updated": "2012-09-18T09:59:52.000Z" } ], "analyses": { "subjects": [ "13.25.Ft", "11.30.Er", "12.15.Ff" ], "keywords": [ "cp violation", "two-body d0 decays", "d0-d0bar mixing", "measurement", "ycp result excludes" ], "tags": [ "journal article" ], "publication": { "publisher": "APS", "journal": "Physical Review D", "year": 2013, "month": "Jan", "volume": 87, "number": 1, "pages": "012004" }, "note": { "typesetting": "TeX", "pages": 15, "language": "en", "license": "arXiv", "status": "editable", "inspire": 1186384, "adsabs": "2013PhRvD..87a2004L" } } }