Accès ouvert
1998
article
OpenAlex
Maurizio Filippo Acciarri, O. Adriani, M. Aguilar-Benítez, Steven P. Ahlen et autres
Four of the Michel parameters and the average tau-neutrino helicity have been measured by analysing tau decay spectra in 147 pb −1 of data collected by the L3 detector. The decays τ − → e − ν τ ν ̄ e , …
it, es, us, ch, ro, ru, in, fr, nl, de, hu, tw, cn
(code pays fourni par la source)
Accès ouvert
1998
article
OpenAlex
Maurizio Filippo Acciarri, O. Adriani, M. Aguilar-Benitez, Steven P. Ahlen et autres
A measurement of the inclusive charmless semileptonic branching fraction of beauty hadrons, b→X u ℓ ν , has been performed using almost two million hadronic Z decays collected by the L3 experiment at LEP, yielding the result: Br(b→X u ℓ ν )=(3.3±1.0±1.7)×10 …
it, es, de, us, nl, ch, ro, ru, in, fr, hu, tw, cn
(code pays fourni par la source)
Accès ouvert
1997
article
OpenAlex
Maurizio Filippo Acciarri, Oscar Adriani, M. Aguilar-Benitez, Steven P. Ahlen et autres
The two-photon collision reaction e + e − → e + e − l + l − has been studied at 2 ≈91 GeV using the L3 detector at LEP for l = e, μ , τ . We have analysed untagged …
it, es, us, ch, ro, ru, in, fr, nl, de, hu, cn, hk
(code pays fourni par la source)
Accès ouvert
1996
article
OpenAlex
Maurizio Filippo Acciarri, O. Adriani, M. Aguilar-Benítez, Steven P. Ahlen et autres
The lifetime of the tau lepton is measured using data collected in 1994 by the L3 detector at LEP. The precise track position information of the Silicon Microvertex Detector is exploited. The tau lepton lifetime is determined from the signed impact parameter …
at, se, us, in, de, it, no, ru, dk, fr, nl, ch, gb, ro, es, co, be, fi
(code pays fourni par la source)
Accès ouvert
1996
article
OpenAlex
Maurizio Filippo Acciarri, Apriadi Salim Adam, O. Adriani, M. Aguilar-Benítez et autres
We report on a search for the excited leptons e∗, μ∗, τ∗ and ν∗ in e+e− collisions at s = 130-140 GeV using the L3 detector at LEP. No evidence has been found for their existence. From an analysis of the expected …
it, us, ch, ro, ru, in, fr, cz
(code pays fourni par la source)