Results on Tau Physics from BaBar
Abstract
Recent results on tau physics from BaBar are reviewed. Limits on lepton-flavor violation in the tau decay process tau->lll are presented based on 91.6 fb1 of data. In all six decay modes considered, the numbers of events found in data are compatible with the background expectations, and upper limits on the branching fractions are set in the range (1-3) 10-7 at 90% CL. A preliminary measurement of the five prong branching fraction based on 110.7 fb-1 of data is presented with the result B(tau- -> 3h- 2h+ nu) = (8.52+/-0.09+/-0.40) 10-4. A preliminary measurement of the tau lifetime based on 30 fb-1 of data is presented where a lifetime of 290.8+/-1.5+/-1.6 fs is measured.
Turn this paper into a full lesson
ArcXiv compiles a staged curriculum from this paper: 8-12 lessons across beginner → advanced, synthesised section guides, visuals, flashcards, a quiz, exercises, and on-demand deep dives per section. Grounded in the abstract, never invented.