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Visit by Ms Michelle Gyles-McDonnough, UNITAR Executive Director and UN Assistant Secretary-General, on Thursday, 24 April 2025.
No full textMonte Carlo Simulation - ATLAS Cheat Sheet in German | Monte Carlo Simulationen
No full textATLAS Cheat Sheets are an outreach resource for the general public or students to better understand some of the fundamental concepts of particle physics. They could be used online or as posters. This sheet in German explains the basic concepts of Monte Carlo Simulation
VBS measurements including Majorana neutrino searches at ATLAS and CMS
No full textThis talk reports recent measurements of vector boson scattering processes at the LHC. These results provide stringent tests of the Higgs mechanism and offer a new avenue for precision tests of the SM as well as MC modelling. In addition, the search for Majorana neutrinos via similar final states will be discussed
ttbar+heavy flavor measurements from ATLAS
No full textATLAS only talk "ttbar+heavy flavor measurements from ATLAS" at LHCP202
Open Hardware at CERN in practice: electronics
No full textThis presentation introduces KiCad, a powerful, free and open-source software suite for Printed Circuit Board (PCB) design. With robust features, active development, and growing community support, KiCad is a viable alternative to proprietary tools. We'll highlight key capabilities, recent improvements, and examples of successful designs to show why it's well-suited for use at CERN
Open Hardware at CERN in practice: electronics
No full textThe CERN Open Hardware Licence (“CERN OHL”) was developed in 2011 to promote collaboration among hardware designers and to provide a legal tool which supports the freedom to use, study, modify, share and distribute hardware designs and products based on those designs. The second version of CERN OHL released in 2020 provides additional flexibility by introducing three CERN OHL variants – the permissive, the weakly-reciprocal and the strongly-reciprocal, thus enabling the selection of a licence adapted to the needs of each project. This presentation offers a legal perspective on CERN OHL key features, including its approach to derivative works, documentation, and obligations for redistribution
Observation of double parton scattering in same-sign W boson pair production in pp collisions at TeV with the ATLAS detector
No full textThis letter reports the measurement of double parton scattering in same-sign W boson pair production with the ATLAS detector. The data set used corresponds to an integrated luminosity of 140 fb of proton-proton collisions at a center-of-mass energy of 13 TeV, collected during Run 2 of the Large Hadron Collider. The study is performed in final states including two same-charge leptons, electron or muon, missing transverse momentum, and up to one jet. An excess of events is observed over the expected background contributions with a significance of 8.8 standard deviations. The measured fiducial cross section times leptonic branching fraction is fb. The measurement corresponds to a double parton scattering effective cross section of mb.This letter reports the measurement of double parton scattering in same-sign W boson pair production with the ATLAS detector. The data set used corresponds to an integrated luminosity of 140 fb−1 of proton–proton collisions at a center-of-mass energy of 13 TeV, collected during Run 2 of the Large Hadron Collider. The study is performed in final states including two same-charge leptons, electron or muon, missing transverse momentum, and up to one jet. An excess of events is observed over the expected background contributions with a significance of 8.8 standard deviations. The measured fiducial cross section times leptonic branching fraction is 4.59±0.64 fb. The measurement corresponds to a double parton scattering effective cross section of 10.6±1.8 mb.This letter reports the measurement of double parton scattering in same-sign W boson pair production with the ATLAS detector. The data set used corresponds to an integrated luminosity of 140 fb of proton-proton collisions at a center-of-mass energy of 13 TeV, collected during Run 2 of the Large Hadron Collider. The study is performed in final states including two same-charge leptons, electron or muon, missing transverse momentum, and up to one jet. An excess of events is observed over the expected background contributions with a significance of 8.8 standard deviations. The measured fiducial cross section times leptonic branching fraction is fb. The measurement corresponds to a double parton scattering effective cross section of mb
Tier-0 in the HL-LHC Era
No full textThe Prevessin Computer Centre provides additional capabilities for the CERN computing infrastructure including the Tier-0. This note explores the approach being taken and architecture for the HL-LHC era
Can we use viral receptor mapping and particle deposition models to predict the clinical severity of novel airborne pathogens?
No full textATLAS Searches for new scalars & BSM Higgs decays
No full textThe discovery of the Higgs boson with the mass of about 125 GeV completed the particle content predicted by the Standard Model. Even though this model is well established and consistent with many measurements, it is not capable to solely explain some observations. Many extensions of the Standard Model addressing such shortcomings introduce additional Higgs bosons, beyond-the-Standard-Model couplings to the Higgs boson, or new particles decaying into Higgs bosons. In this talk, the latest searches in the Higgs sector by the ATLAS experiment are reported