Specialized data-taking and data-processing techniques were introduced by the CMS
experiment in Run 1 of the CERN LHC to enhance the sensitivity of searches for new …

Quantum Chromodynamics, the theory of quarks and gluons, whose interactions can be
described by a local SU (3) gauge symmetry with charges called “color quantum numbers” …

This paper reports world averages of measurements of b-hadron, c-hadron, and τ-lepton
properties obtained by the Heavy Flavor Averaging Group using results available before …

The anomalies in rare B decays endure. We present results of an updated global analysis
that takes into account the latest experimental input–in particular the recent results on\(R_K\) …

At the start of Run 2 in 2015, the LHC delivered proton-proton collisions at a center-of-mass
energy of 13 TeV. During Run 2 (years 2015-2018) the LHC eventually reached a luminosity …

The LHCb Collaboration has recently released a new study of B+→ K+ ℓ+ ℓ-and B→ K* 0 ℓ+
ℓ-(ℓ= e, μ) decays, testing lepton universality with unprecedented accuracy using the whole …

A bstract Motivated by the recent LHCb announcement of a 3. 1σ violation of lepton-flavor
universality in the ratio RK= Γ (B→ Kμ+ μ−)/Γ (B→ Ke+ e−), we present an updated …

Branching fraction and effective lifetime measurements of the rare decay B s 0→ μ+ μ-and
searches for the decays B 0→ μ+ μ-and B s 0→ μ+ μ-γ are reported using proton-proton …

An improved measurement of the decay B s 0→ μ+ μ-and searches for the decays B 0→ μ+
μ-and B s 0→ μ+ μ-γ are performed at the LHCb experiment using data collected in proton …

Measurements are presented of the B $^ 0_\mathrm {S} $$\to $$\mu^+\mu^-$ branching
fraction and effective lifetime, as well as results of a search for the B $^ 0$$\to $$\mu^+\mu …