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J

J. Lefrançois

Researcher at University of Paris

Publications -  100
Citations -  3177

J. Lefrançois is an academic researcher from University of Paris. The author has contributed to research in topics: ALEPH experiment & Electron–positron annihilation. The author has an hindex of 31, co-authored 100 publications receiving 3077 citations.

Papers
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A measurement of the inclusive b -> s gamma branching ratio

R. Barate, +374 more
- 11 Jun 1998 - 
TL;DR: In this article, the flavour changing neutral current decay b→sγ has been detected in hadronic Z decays collected by ALEPH at LEP, which is isolated in lifetime-tagged b b events by the presence of a hard photon associated with a system of high momentum and high rapidity hadrons.
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Studies of quantum chromodynamics with the ALEPH detector

R. Barate, +413 more
- 01 Feb 1998 - 
TL;DR: In this article, the ALEPH detector at LEP1 has been used for detailed studies of both perturbative and non-perturbative aspects of strong interactions to be carried out using hadronic Z and tau decays.
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Study of the fragmentation of b quarks into B mesons at the Z peak

Arno Heister, +276 more
- 12 Jul 2001 - 
TL;DR: In this article, a semi-exclusive reconstruction of B->l nu D(*) decays is performed, by combining lepton candidates with fully reconstructed D* mesons while the neutrino energy is estimated from the missing energy of the event.
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A precise measurement of ΓZ→bb/ΓZ→hadrons

D. Buskulic, +399 more
- 02 Sep 1993 - 
TL;DR: In this paper, a measurement of the partial width ratio using a method which tags the decays through the lifetimes of the produced heavy hadrons is presented, which relies on the tracking precision afforded by a double-sided silicon vertex detector.