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A. Powell

Researcher at University of Oxford

Publications -  375
Citations -  23474

A. Powell is an academic researcher from University of Oxford. The author has contributed to research in topics: Branching fraction & Meson. The author has an hindex of 77, co-authored 375 publications receiving 21855 citations. Previous affiliations of A. Powell include Warneford Hospital & University of Warwick.

Papers
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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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Performance of the LHCb RICH detector at the LHC

TL;DR: The RICH system provides charged particle identification over a wide momentum range, from 2–100 GeV/c, and excellent separation of hadronic particle types (π, K, p) is achieved.
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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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Differential branching fractions and isospin asymmetries of B -> K ((*)) μ(+) μ(-) decays

Roel Aaij, +713 more
TL;DR: In this article, the authors measured the isospin asymmetries of the B (0) -> K ( 0) mu (+) mu (-), B (1) → K (1)-m (+) m mu (-) and B (2)→ K (2)-m (-) m (-), respectively.
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Observation of the resonant character of the Z(4430)(-) state

Roel Aaij, +698 more
TL;DR: The observed evolution of the Z(4430)^{-} amplitude with the ψ^{ fb^{-1} mass establishes the resonant nature of this particle.