%0 Journal Article
%T Measurements of Charged Current Lepton Universality and vertical bar V-us vertical bar Using Tau Lepton Decays to e(-)(nu)over-bar(e)nu(tau), mu(-)(nu)over-bar(mu)nu(tau), pi(-)nu(tau), and K-nu(tau)
%A BABAR Collaboration (Aubert, B. et al
%A Azzolini, V.
%A Lopez-March, N.
%A Martinez-Vidal, F.
%A Milanes, D. A.
%A Oyanguren, A.
%J Physical Review Letters
%D 2010
%V 105
%N 5
%I Amer Physical Soc
%@ 0031-9007
%G English
%F BABARCollaborationAubert_etal2010
%O ISI:000280472700002
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=402), last updated on Thu, 24 Mar 2011 11:10:03 +0000
%X Using 467 fb(-1) of e(+)e(-) annihilation data collected with the BABAR detector, we measure B(tau(-)->mu(-)(nu) over bar (mu)nu(tau))/B(tau(-)-> e(-)(nu) over bar (e)nu(tau)) = (0.9796 +/- 0.0016 +/- 0.0036), B(tau(-)->pi(-)nu(tau))/B(tau(-)-> e(-)nu(e)nu(tau)) = (0.5945 +/- 0.0014 +/- 0.0061), and B(tau(-)-> K-nu(tau))/B(tau(-)-> e(-)nu(e)nu(tau)) = (0.03882 +/- 0.00032 +/- 0.00057), where the uncertainties are statistical and systematic, respectively. From these precision similar to measurements, we test the standard model assumption of μ- e and tau – μcharge current lepton universality and provide determinations of vertical bar V-us vertical bar experimentally independent of the decay of a kaon.
%R 10.1103/PhysRevLett.105.051602
%U http://fr.arxiv.org/abs/0912.0242
%U https://doi.org/10.1103/PhysRevLett.105.051602
%P 051602-8pp