The nuclear modification factors of {J/ψ } and ψ {(2S)} mesons are measured in {PbPb} collisions at a centre-of-mass energy per nucleon pair of √{[b]{s_{_{ {NN}}}}} = 5.02 {Te} {V} . The analysis is based on {PbPb} and pp data samples collected by CMS at the LHC in 2015, corresponding to integrated luminosities of 464 μ b^{-1} and 28 {pb}^ {-1}

Differential and double-differential cross sections for the production of top quark pairs in proton-proton collisions at √{s }=13 TeV are measured as a function of kinematic variables of the top quarks and the top quark-antiquark (t t ¯) system. In addition, kinematic variables and multiplicities of jets associated with the t t ¯ production are

Measurements are presented of the lifetimes of the {B^0}, B^0_{s}, Λ_{b} ^0, and B_{c}^+ hadrons using the decay channels {B^0} → J/ψ K^{*}(892)0, B^0 → J/ψ K^0_S, B^0_{s} → J/ψ {π ^+}{π ^-}, B^0_{s} → J/ψ {φ (1020)}, Λ_{b}^0 → J/ψ Λ0, and B_{c}^+ → J/ψ {π ^+}. The data sample, corresponding to an integrated luminosity of 19.7 {fb}^ {-1}, was

Angular distributions of the decay B0 →K*0μ+μ- are studied using a sample of proton-proton collisions at √{ s } = 8TeV collected with the CMS detector at the LHC, corresponding to an integrated luminosity of 20.5fb-1. An angular analysis is performed to determine the P1 and P5‧ parameters, where the P5‧ parameter is of particular interest because

We introduce VLT-MUSE observations of the central 2'× 2' (30 × 30 pc) of the Tarantula Nebula in the Large Magellanic Cloud. The observations provide an unprecedented spectroscopic census of the massive stars and ionised gas in the vicinity of R136, the young, dense star cluster located in NGC 2070, at the heart of the richest star-forming region

A critical issue in the asymptotic giant branch (AGB) self-enrichment scenario for the formation of multiple populations in globular clusters (GCs) is the inability to reproduce the magnesium isotopic ratios, despite the model in principle can account for the depletion of magnesium. In this work, we analyse how the uncertainties on the various p