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.

Recent tau lepton results from BABAR

LUSIANI, Alberto
Writing – Original Draft Preparation
2014

Abstract

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.
International Workshop on e+e- Collisions from Phi to Psi 2013 (PHIP SI2013)
Proceedings of the International Workshop on e+e- Collisions from Phi to Psi 2013 (PHIPSI2013), Rome, Italy, 9-12 September 2013
https://www.worldscientific.com/doi/abs/10.1142/S2010194514604402
tau
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11384/58734
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