Boosted Higgs: A High-Energy Adventure: Measurement of the Higgs boson in decays to bottom quarks at high energy with the ATLAS experiment at the LHC

Abstract

Particle physics is the field of science that tries to understand what the universe is made of at the most fundamental level. Like a building is made of bricks, everything around us, from plants and oceans to stars and people, is made of tiny particles. Particle physicists study what these particles are, how they behave, and how they interact with each other. A key element is the Higgs boson, discovered in 2012, which explains how particles acquire mass. This thesis investigates the Higgs boson produced with high momentum, i.e. boosted regime, in its most probable decay channel into two bottom quarks. Using data collected by the ATLAS experiment at the Large Hadron Collider (LHC), this research improves the precision of Higgs measurements and strengthens the foundation for future discoveries in particle physics.