000002214 001__ 2214
000002214 005__ 20210202164927.0
000002214 037__ $$aBELLE2-TALK-CONF-2021-005
000002214 041__ $$aeng
000002214 088__ $$aBELLE2-TALK-DRAFT-2020-077
000002214 100__ $$aStefano Moneta
000002214 245__ $$aEarly Belle II measurements of the tau lifetime
000002214 260__ $$aXXVII Cracow EPIPHANY Conference on Future of particle physics$$c2021-01-07
000002214 300__ $$amult. p
000002214 520__ $$aThe tau-lepton lifetime represents a fundamental parameter within the Standard Model framework, contributing to the test of lepton flavor universality. As the present tau lifetime uncertainty is below 0.2%, a competitive measurement is particularly challenging. The method proposed for the Belle II experiment exploits the tiny beam spot size at the interaction point obtained through the new collision scheme of SuperKEKB. By this method, a competitive statistical uncertainty could already be reached with early Belle II data. 
000002214 8560_ $$fdavid.jaffe@desy.de
000002214 8564_ $$uhttps://docs.belle2.org/record/2214/files/BELLE2-TALK-CONF-2021-005.pdf