Exploring the Size of the Proton

Description

This book is a rare jewel, describing fundamental research in a highly dynamic field of subatomic physics. It presents an overview of cross section measurements of deeply virtual Compton scattering. Understanding the structure of the proton is one of the most important challenges that physics faces today. A typical tool for experimentally accessing the internal structure of the proton is lepton–nucleon scattering. In particular, deeply virtual Compton scattering at large photon virtuality and small four-momentum transfer to the proton provides a tool for deriving a three-dimensional tomographic image of the proton. Using clear language, this book presents the highly complex procedure used to derive the momentum-dissected transverse size of the proton from a pioneering measurement taken at CERN. It describes in detail the foundations of the measurement and the data analysis, and includes exhaustive studies of potential systematic uncertainties, which could bias the result. Front Matter ....Pages i-xi Preamble (Philipp Jörg)....Pages 1-5 Introduction to Theory (Philipp Jörg)....Pages 7-43 The COMPASS-II Experiment (Philipp Jörg)....Pages 45-59 The Kinematically Constrained Fit (Philipp Jörg)....Pages 61-76 The 2012 DVCS Data (Philipp Jörg)....Pages 77-102 Event Selection and Simulations (Philipp Jörg)....Pages 103-127 The Cross Section and Its t-Dependence (Philipp Jörg)....Pages 129-164 Summary (Philipp Jörg)....Pages 165-166 Epilog (Philipp Jörg)....Pages 167-177 Back Matter ....Pages 179-231