German Martinez

TL;DR: This is the first time that the J=1 and 2 states are well resolved and their masses individually measured, and they are determined with respect to the world-average value of the ϒ(3S) mass, which has an uncertainty of 0.5 MeV.

TL;DR: In this paper, a measurement of the underlying event activity in proton-proton collisions at a center-of-mass energy of 13 TeV was performed using Z boson production events collected with the CMS experiment at the LHC.

TL;DR: In this paper, a front-end application specific integrated circuit (ASIC) for the readout of common cathode Silicon Photo-Multiers arrays is presented with the following features: wide dynamic range, high speed, multi channel, low input impedance current amplifier, low power (≈10mW per channel), common cathodes connection, directly coupled input with common mode voltage control and separated timing and charge signal output.

TL;DR: For a wide range of Pb+Pb centralities (N{part} less than or approximately equal 300), the yield of pi{0}'s with p{T} greater than or about equal 2 GeV/c is larger than or consistent with the p+C or p-Pb yields scaled with the number of nucleon-nucleon collisions.