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R. Lefèvre

Researcher at Blaise Pascal University

Publications -  172
Citations -  16622

R. Lefèvre is an academic researcher from Blaise Pascal University. The author has contributed to research in topics: Branching fraction & Meson. The author has an hindex of 52, co-authored 169 publications receiving 14988 citations. Previous affiliations of R. Lefèvre include University of Auvergne & New York City Landmarks Preservation Commission.

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The ATLAS Experiment at the CERN Large Hadron Collider

Georges Aad, +3032 more
TL;DR: The ATLAS detector as installed in its experimental cavern at point 1 at CERN is described in this paper, where a brief overview of the expected performance of the detector when the Large Hadron Collider begins operation is also presented.
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The LHCb detector at the LHC

A. A. Alves, +889 more
TL;DR: The LHCb experiment is dedicated to precision measurements of CP violation and rare decays of B hadrons at the Large Hadron Collider (LHC) at CERN (Geneva).
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Measurement of form-factor-independent observables in the decay B0→K*0μ+μ-

Roel Aaij, +656 more
TL;DR: A measurement of form-factor-independent angular observables in the decay B(0)→K*(892)(0)μ(+)μ(-) is presented, based on a data sample collected by the LHCb experiment in pp collisions at a center-of-mass energy of 7 TeV.
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Test of lepton universality with B 0 → K *0 ℓ + ℓ − decays

Roel Aaij, +821 more
TL;DR: In this article, a test of lepton universality is performed by measuring the ratio of the branching fractions of the B$0$ → K$*0}$ e$+}$ π$−}$ decays, and the ratio is measured in two regions of the dilepton invariant mass squared.
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Measurement of the Ratio of Branching Fractions B (B ¯ 0 →d∗+τ- ν ¯ τ) / B (B ¯ 0 →d∗+μ- ν ¯ μ)

Roel Aaij, +723 more
TL;DR: In this paper, the branching fraction ratio of the tau lepton was measured at the LHCb collider, which is 2.1 standard deviations larger than the value expected from lepton universality in the standard model.