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T. Lesiak

Researcher at Polish Academy of Sciences

Publications -  1554
Citations -  69001

T. Lesiak is an academic researcher from Polish Academy of Sciences. The author has contributed to research in topics: Branching fraction & Meson. The author has an hindex of 111, co-authored 1471 publications receiving 60467 citations. Previous affiliations of T. Lesiak include AGH University of Science and Technology & Joint Institute for Nuclear Research.

Papers
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Observation of a Narrow Charmoniumlike State in Exclusive B±→K±π+π-J/ψ Decays

Suyong Choi, +175 more
TL;DR: In this article, a narrow charmonium-like state produced in the exclusive decay process B+/--->K+/-pi(+)pi(-)J/psi has been observed, which has a mass of 3872.0+/-0.6(stat)+/- 0.5(syst) MeV.
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Test of lepton universality using b^{+}k^{+}ℓ^{+}ℓ^{-} decays

Roel Aaij, +701 more
TL;DR: The value of the ratio of branching fractions for the dilepton invariant mass squared range 1 < q(2) < 6 GeV(2)/c(4) is measured to be 0.745(-0.074)(+0.090)(stat) ± 0.036(syst).
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LHCb detector performance

Roel Aaij, +703 more
TL;DR: In this paper, the performance of the various LHCb sub-detectors and the trigger system are described, using data taken from 2010 to 2012, and it is shown that the design criteria of the experiment have been met.
Journal ArticleDOI

LHCb Detector Performance

Roel Aaij, +703 more
TL;DR: In this article, the performance of the various LHCb sub-detectors and the trigger system are described, using data taken from 2010 to 2012, and it is shown that the design criteria of the experiment have been met.
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Observation of $J/\psi p$ Resonances Consistent with Pentaquark States in $\Lambda_b^0 \to J/\psi K^- p$ Decays

Roel Aaij, +722 more
TL;DR: In this article, the pentaquark-charmonium states were observed in the J/ψp channel in Λ0b→J/K−p decays and the significance of these resonances is more than 9 standard deviations.