Measuring Diphoton Production in Association with Heavy Flavor with the ATLAS Detector

This unique analysis investigates the production of two photons in conjunction with heavy flavor quarks using the ATLAS detector at the Large Hadron Collider at CERN using the full Run 2 dataset with a center-of-mass energy of √𝑠=13 TeV. The 𝛾𝛾 + heavy flavor jets process is a dominant background in at least two important analyses: the 𝐻𝐻→𝛾𝛾𝑏𝑏 process, which provides a direct probe of Electroweak Symmetry Breaking due to observation of the Higgs boson self-coupling and the 𝑡𝑡¯𝐻→𝛾𝛾 process, which is important for measuring the Yukawa coupling between the Higgs and top quark. Despite its importance, 𝛾𝛾 + heavy flavor jets process has never generically been measured before, nor is there any direct prediction in literature. A template fit will be implemented to the jet flavor-tagging discriminant to extract the signal to measure the components of heavy flavor in 𝛾𝛾+𝑗𝑒𝑡𝑠. The measurements will be made in the single-jet or multi-jet categories that are a combination of b-, c-, and light-flavor jets (bb, bc, bl, etc.). Preliminary sensitivity estimates will be shown.