{ "id": "hep-ex/0404018", "version": "v2", "published": "2004-04-12T16:44:38.000Z", "updated": "2004-04-21T10:01:40.000Z", "title": "Search for the Lepton-Flavor-Violating Decay $τ^- \\to μ^- η$ at Belle", "authors": [ "Y. Enari", "for the Belle Collaboration" ], "comment": "Submitted to Phys.Rev.Lett", "journal": "Phys.Rev.Lett.93:081803,2004", "doi": "10.1103/PhysRevLett.93.081803", "categories": [ "hep-ex" ], "abstract": "We have searched for the Lepton Flavor Violating decay $\\tau^- \\to \\mu^- \\eta$ using a data sample of 84.3 fb$^{-1}$ accumulated with the Belle detector at KEK. The $\\eta$-meson was detected through the decay modes: $\\eta \\to \\gamma\\gamma$ and $\\pi^+\\pi^-\\pi^0$. No signal candidates are found, and we obtain an upper limit for the branching fraction ${\\cal B}(\\tau^- \\to \\mu^- \\eta)<3.4\\times 10^{-7}$ at the 90% confidence level.", "revisions": [ { "version": "v2", "updated": "2004-04-21T10:01:40.000Z" } ], "analyses": { "subjects": [ "13.35.Dx", "11.30.Hv", "14.60.Fg", "12.60.-i" ], "keywords": [ "lepton-flavor-violating decay", "lepton flavor violating decay", "confidence level", "upper limit", "belle detector" ], "tags": [ "journal article" ], "publication": { "publisher": "APS", "journal": "Phys. Rev. Lett." }, "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable", "inspire": 647970 } } }