A measurement is presented of the cross section for the electroweak production of a Z boson and a photon in association with two jets in proton-proton collisions at √{ s} = 8 TeV. The Z bosons are identified through their decays to electron or muon pairs. The measurement is based on data collected with the CMS detector corresponding to an

Inclusive jet spectra from p p and PbPb collisions at a nucleon-nucleon center-of-mass energy of 2.76 TeV , collected with the CMS detector at the CERN Large Hadron Collider, are presented. Jets are reconstructed with three different distance parameters (R =0.2 , 0.3, and 0.4) for transverse momentum (pT) greater than 70 GeV / c and pseudorapidity

Normalized double-differential cross sections for top quark pair (t\overline{t}) production are measured in pp collisions at a centre-of-mass energy of 8 {TeV} with the CMS experiment at the LHC. The analyzed data correspond to an integrated luminosity of 19.7 {fb}^{-1}. The measurement is performed in the dilepton e^{± }μ ^{∓ } final state. The t

In this paper, we report on three areas of the Iberian Peninsula that were occupied at least during the Iron Age and the early stages of Romanisation, where observations of astronomical phenomena in the landscape, rock carvings, and Latin inscriptions point to a particular method of time reckoning. All of these sites have previously been connected

La evolución de las galaxias es un proceso complejo con gran cantidad de factores internos y externos que le influyen de maneras que no se pueden discernir de forma inmediata y que interactúan entre ellos de muchas formas. Uno de los principales causantes de evolución galáctica es la retroalimentación cinética de estrellas masivas o AGN que es capaz