Documents in process

The present work compares two deformation techniques, rolling and EqualChannel Angular pressing (ECAP), and the response offered by three differentmaterials that differ in Stacking Fault Energy (SFE): AA1010 Al, commerciallypure Cu, and an austenitic stainless steel. The objective of this investigationis to study the effect of each deformation mode on tensile behavior,deformation mechanism, texture, and microstructure and to establish theinfluence of the stacking fault energy on said effects. [...]

A search for massive resonances decaying to a Z boson and a photon is performed in events with a hadronically decaying Z boson candidate, separately in light-quark and b quark decay modes, identified using jet substructure and advanced b tagging techniques. Results are based on samples of proton–proton collisions collected with the CMS detector at the LHC at center-of-mass energies of 8 and 13TeV , corresponding to integrated luminosities of 19.7 and 2.7 fb −1 , respectively. [...]

The CMS Collaboration presents the first measurement of the differential cross section of jets from charm quarks produced in proton–lead (pPb) collisions at a nucleon–nucleon center-of-mass energy of sNN=5.02TeV , as well as results from charm quark jets in proton–proton (pp) collisions at s=2.76 and 5.02 TeV . By comparing the yields of the pPb and pp collision systems at the same energy, a nuclear modification factor for charm jets from 55 to 400 GeV/c in pPb collisions at sNN=5.02TeV of RpA=0.92±0.07(stat)±0.11(syst) is obtained. [...]

The cross section for the production of single top quarks in the t channel is measured in proton–proton collisions at 13 TeV with the CMS detector at the LHC. The analyzed data correspond to an integrated luminosity of 2.2 fb−1 . [...]

The RadiaBeam/SLAC dechirper, a structure consisting of pairs of flat, metallic, corrugated plates, %a corrugated structure in flat geometry, has been installed just upstream of the undulators in the Linac Coherent Light Source (LCLS). As a dechirper, with the beam passing between the plates on axis, longitudinal wakefields are induced that can remove unwanted energy chirp in the beam. [...]