This thesis reports on the first studies of Standard Model photon production at the Large Hadron Collider (LHC) using the ATLAS detector. Standard Model photon production is a large background in the search for Higgs bosons decaying into photon pairs, and is thus critical to understand. The thesis explains the techniques used to reconstruct and identify photon candidates using the ATLAS detector, and describes a measurement of the production cross section for isolated prompt photons. The thesis also describes a search for the Higgs boson in which the analysis techniques used in the measurement are exploited to reduce and estimate non-prompt backgrounds in diphoton events.

This thesis reports on the first studies of Standard Model photon production at the Large Hadron Collider (LHC) using the ATLAS detector. Standard Model photon production is a large background in the search for Higgs bosons decaying into photon pairs, and is thus critical to understand. The thesis explains the techniques used to reconstruct and identify photon candidates using the ATLAS detector, and describes a measurement of the production cross section for isolated prompt photons. The thesis also describes a search for the Higgs boson in which the analysis techniques used in the measurement are exploited to reduce and estimate non-prompt backgrounds in diphoton events.

Lessons I've Learned is inspired by extraordinary experiences of miracles, visions and dreams I have witnessed and participated in throughout my life. As you read I hope you come to understand how I found the strength to live through extremely difficult situations. I humbly pray for all who read my book gifts and fruits of the Holy Spirit. I ask The Father Almighty in the name of Jesus Christ for unity; of love, peace, hope, Joy, charity, patience, faith, modesty, goodness, chastity, continence, benignity, longanimity, wisdom, understanding, counsel, fortitude, knowledge, piety, fear of the Lord, healing, prophecy, tongues, and interpretation of tongues. In essence, my book is about how I have come to rely on The Blessed Virgin Mary, to love The Father Almighty, The Holy Spirit and to know that Jesus Christ is always by my side. I hope you enjoy reading this book. It was an effort of many angels and friends. Heaven felt it important for you to read the pages provided.