You-Hao Chang Knihy

Focusing on photon + 3 jets final states in Proton-Proton collisions at 7 TeV, the study investigates Double Parton Scattering (DPS) patterns. Utilizing a new Monte Carlo generator method, it offers higher-order corrections to the Single Parton Scattering (SPS) background. The research examines if DPS contributions enhance the alignment of measured data with Monte Carlo predictions, revealing that theoretical uncertainties in SPS are greater than anticipated. Additionally, it presents a comprehensive set of DPS-sensitive measurements for further analysis.

This book mainly focuses on the study of photon + 3 jets final state in Proton-Proton Collisions at √s = 7TeV, searching for patterns of two (or more) distinct hard scatterings in the same collision, i.e the so-called Double Parton Scattering (DPS). A new method by using Monte Carlo generators was performed and provides higher order corrections to the description of the Single Parton Scattering (SPS) background. Further it is investigated whether additional contributions from DPS can improve the agreement between the measured data and the Monte Carlo predictions. The current theoretical uncertainties related to the SPS background are found to be larger than expectation. At the same time a rich set of DPS-sensitive measurements is reported for possible further interpretation.