Background and Purpose— Strokes have especially devastating implications if they occur
early in life; however, only limited information exists on the characteristics of acute …

A test of lepton universality, performed by measuring the ratio of the branching fractions of
the B 0→ K* 0 μ+ μ− and B 0→ K* 0 e+ e− decays,\({R} _ {K^{* 0}}\), is presented. The K* 0 …

A narrow pentaquark state, P c (4312)+, decaying to J/ψ p, is discovered with a statistical
significance of 7.3 σ in a data sample of Λ b 0→ J/ψ p K− decays, which is an order of …

Background The diagnostic and pathophysiological relevance of antibodies to aquaporin-4 (AQP4-Ab)
in patients with neuromyelitis optica spectrum disorders (NMOSD) has been …

A highly significant structure is observed in the Λ c+ K− π+ π+ mass spectrum, where the Λ c+
baryon is reconstructed in the decay mode p K− π+. The structure is consistent with …

The ratio of branching fractions R (D*−)≡ B (B 0→ D*− τ+ ν τ)/B (B 0→ D*− μ+ ν μ) is measured
using a data sample of proton-proton collisions collected with the LHCb detector at center…

The ratio of branching fractions R (D*−)≡ B (B 0→ D*− τ+ ν τ)/B (B 0→ D*− μ+ ν μ) is measured
using a data sample of proton-proton collisions collected with the LHCb detector at center…

Conventional hadronic matter consists of baryons and mesons made of three quarks and
quark-antiquark pairs, respectively. The observation of a new type of hadronic state, a doubly …

A measurement of the ratio of branching fractions of the decays B+→ K+ μ+ μ− and B+→ K+
e+ e− is presented. The proton-proton collision data used correspond to an integrated …

A search for the rare decays B s 0→ μ+ μ− and B 0→ μ+ μ− is performed at the LHCb
experiment using data collected in pp collisions corresponding to a total integrated luminosity of …