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 mu - e and tau - mu charge current lepton universality and provide determinations of vertical bar V-us vertical bar experimentally independent of the decay of a kaon.

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) RID C-5223-2009 / Aubert, B., Karyotakis, Y., Lees, J.p., Poireau, V., Prencipe, E., Prudent, X., Tisserand, V., Tico, J.g., Grauges, E., Martinelli, M., Palano, A., Pappagallo, M., Eigen, G., Stugu, B., Sun, L., Battaglia, M., Brown, D.n., Kerth, L.t., Kolomensky, Y.g., Lynch, G., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 105:5(2010). [10.1103/PhysRevLett.105.051602]

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) RID C-5223-2009

CARPINELLI, Massimo;
2010-01-01

Abstract

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 mu - e and tau - mu charge current lepton universality and provide determinations of vertical bar V-us vertical bar experimentally independent of the decay of a kaon.
2010
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) RID C-5223-2009 / Aubert, B., Karyotakis, Y., Lees, J.p., Poireau, V., Prencipe, E., Prudent, X., Tisserand, V., Tico, J.g., Grauges, E., Martinelli, M., Palano, A., Pappagallo, M., Eigen, G., Stugu, B., Sun, L., Battaglia, M., Brown, D.n., Kerth, L.t., Kolomensky, Y.g., Lynch, G., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 105:5(2010). [10.1103/PhysRevLett.105.051602]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11388/47120
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