We report recent measurements on tau leptons obtained by the BABAR collaboration using the entire recorded sample of electron-positron collisions at and around the Upsilon(4S) (about 470fb -1). The events were recorded at the PEP-II asymmetric collider at the SLAC National Accelerator Laboratory. The measurements include high multiplicity tau decay branching fractions with 3 or 5 charged particles in the final state, a search for the second class current the tau decay tau rarr pieta'nu, tau branching fractions into final states containing two K S mesons, tau rarr h - K S0 K S0 (pi 0) nu tau, with h = pi, K, and preliminary measurements of hadronic spectra of tau decays with three hadrons (tau - rarr h -h +h -nu tau decays, where h = pi, K). The results improve the experimental knowledge of the tau lepton properties and can be used to improve the precision tests of the Standard Model.
|Titolo:||Recent tau lepton results from BABAR|
|Titolo del libro:||Proceedings of the International Workshop on e+e- Collisions from Phi to Psi 2013 (PHIPSI2013), Rome, Italy, 9-12 September 2013|
|Data di pubblicazione:||2014|
|Nome del convegno:||International Workshop on e+e- Collisions from Phi to Psi 2013 (PHIP SI2013)|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1142/S2010194514604402|
|Appare nelle tipologie:||4.1 Contributo in Atti di convegno|