Igor Bordyuzhin

TL;DR: In this paper, a test of lepton universality, performed by measuring the ratio of the branching fractions of the $B^{0} \rightarrow K^{*0}\mu+}\mu^{+}e^{-}$ decays, is presented.

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.

TL;DR: In this article, the τ lepton was reconstructed with three charged pions in the final state using a novel method that exploits the different vertex topologies of signal and background to isolate samples of semitauonic decays of b hadrons with high purity.

TL;DR: In this paper, the τ-lepton decays with three charged pions in the final state were measured using a data sample of proton-proton collisions collected with the LHCb detector at center-of-mass energies of 7 and 8 TeV.

TL;DR: The search for long-lived dark photons is the first to achieve sensitivity using a displaced-vertex signature and the constraints placed on promptlike dark photons are the most stringent to date for the mass range 10.6