{ "id": "hep-ex/0508040", "version": "v1", "published": "2005-08-19T09:02:56.000Z", "updated": "2005-08-19T09:02:56.000Z", "title": "Improved measurement of B0bar -> D_s^-D^+ and search for B0bar -> D_s^+D_s^- at Belle", "authors": [ "K. Abe", "for the Belle Collaboration" ], "comment": "Contributed to 22nd International Symposium on Lepton-Photon Interactions at High Energy (LP 2005), Uppsala, Sweden, 30 Jun - 5 Jul 2005 and contributed to EPS International Europhysics Conference on High Energy Physics (HEPP-EPS 2005), Lisbon, Portugal, 21-27 Jul 2005", "categories": [ "hep-ex" ], "abstract": "We reconstruct B0bar -> D_s^-D^+ decays using a sample of 275 million BBbar pairs recorded by the Belle experiment, and we measure the branching fraction to be [7.42 +- 0.23(stat) +- 1.36(syst)] x 10^(-3). We also search for the related decay B0bar -> D_s^+D_s^-. We observe no statistically significant signal and set an upper limit on the branching fraction of 2.0 x 10^(-4) at 90% C.L.", "revisions": [ { "version": "v1", "updated": "2005-08-19T09:02:56.000Z" } ], "analyses": { "subjects": [ "13.25.Hw", "14.40.Nd" ], "keywords": [ "measurement", "branching fraction", "belle experiment", "reconstruct b0bar", "million bbbar pairs" ], "tags": [ "conference paper" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable", "inspire": 690274, "adsabs": "2005hep.ex....8040A" } } }