Conveners
Parallel Session 1
- Christos Markou (NCSR Demokritos)
The W boson mass is measured using proton-proton collision data at sqrt(s)=13 TeV corresponding to an integrated luminosity of 16.8 inverse fb recorded during 2016 by the CMS experiment. The W boson mass is extracted using single-muon events via a highly granular maximum likelihood fit of the transverse momentum, pseudorapidity, and charge distribution of the selected muons, yielding one of...
Jet cross-section ratios between inclusive bins of jet multiplicity are measured differentially in variables that are sensitive to either the energy-scale or angular distribution of hadronic energy flow in the final state. Several improvements to the jet energy scale uncertainties are described, which result in significant improvements of the overall ATLAS jet energy scale uncertainty. The...
The large top quark samples collected with the ATLAS experiment at the LHC have yielded measurements of the production cross section of unprecedented precision and in new kinematic regimes. They have also enabled new measurements of top quark properties that were previously inaccessible, enabled the observation of many rare top quark production processes predicted by the Standard Model and...
Present the observation of entanglement in top quark pairs using data collected with the CMS detector in the Run II of the LHC. Event signatures are selected only when two high pT leptons are present consistent with the dileptonic decay channel. An entanglement proxy D is used to determine whether the top quark pairs are entangled in the production threshold with D < -⅓ signaling entanglement....
A new sub-field has emerged in particle physics: borrowing techniques from quantum information science, we can now probe quantum mechanics in collider experiments. The ATLAS Collaboration recently reported the first observation of quantum entanglement between free quarks, in the first dedicated quantum information experiment at a hadron collider. Spin entanglement is observed by selecting...
This presentation will cover the latest results from the CMS experiment on searches for heavy resonances decaying into bosons using data from Run 2. The analysis focuses on various final states, including those involving γ, g, W, Z, and H bosons. These searches aim to identify potential new particles predicted by theories beyond the Standard Model, such as Higgs sector extensions and extra...
