Oğuz Güzel

Experimental particle physics leveraging machine learning with data collected at CERN.

Talks and presentations

Higgs self-coupling Measurements at the CMS Experiment Permalink

July 09, 2024

Conference proceedings talk, PASCOS 2024: 29th International Symposium on Particles, Strings and Cosmology, Quy Nhon, VIETNAM

Since the discovery of the Higgs boson in 2012, the CMS Experiment at the Large Hadron Collider has conducted numerous precision measurements that affirm the predictions of the Standard Model. However, one of the remaining fundamental aspects yet to be directly measured is the self-coupling of the Higgs boson, which is pivotal for understanding the shape of the Higgs potential and the mechanism of electroweak symmetry breaking. This paper presents the current results by the CMS Collaboration reporting on the Higgs self-coupling.

EFT interpretations in the Higgs sector at the CMS experiment Permalink

April 08, 2024

Conference proceedings talk, 31st International Workshop on Deep Inelastic Scattering (DIS2024), Grenoble, FRANCE

The search for new physics beyond the Standard Model continues to be a focal point in contemporary particle physics research. Despite exhaustive direct searches at the Large Hadron Collider yielding no definitive evidence of new particles, the scientific community is propelled towards indirect search methodologies. Effective Field Theories offer an intriguing approach to parameterize indirect beyond the Standard Model physics, particularly when its characteristic scale exceeds the direct accessibility at the Large Hadron Collider, across a broad spectrum of models. Even if the Higgs boson retains its Standard Model-like properties, beyond the Standard Model effects may reveal themselves through higher-dimensional effective interactions among Standard Model fields, thereby providing indirect sensitivity via distortions in kinematic distributions. The Standard Model Effective Field Theory serves to extend the Standard Model Lagrangian by integrating higher-dimensional operators, thus furnishing a framework to parameterize potential new physics effects. Constraints on such effects, derived from measurements spanning various production and decay modes of the Higgs boson, alongside their combination using the data collected by the CMS experiment at a center-of-mass energy of 13 TeV, will be presented.