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

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doi:10.1103/PhysRevLett.105.051602

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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.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11384/4450

Titolo:	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
Autori interni:	LUSIANI, Alberto
Data di pubblicazione:	2010
Rivista:	PHYSICAL REVIEW LETTERS
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.
Handle:	http://hdl.handle.net/11384/4450
Appare nelle tipologie:	1.1 Articolo in rivista

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