Premium
PREFACE
Author(s) -
Winokur George
Publication year - 1975
Publication title -
acta psychiatrica scandinavica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.849
H-Index - 146
eISSN - 1600-0447
pISSN - 0001-690X
DOI - 10.1111/j.1600-0447.1975.tb08920.x
Subject(s) - george (robot) , library science , citation , psychology , history , computer science , art history
The nature of DM remains one of the greatest mysteries in modern physics, despite being significantly more abundant than the normal matter with which everyone is familiar. One method to probe DM is by watching for its production in high energy collisions, such as by the ATLAS experiment at the LHC. The mono-jet search is a particularly powerful way of studying such DM production at the LHC, and is the primary focus of this thesis. This thesis begins by considering the motivation for DM as a whole, the WIMP interpretation thereof, and existing searches for DM, as detailed in Chap. 1. The focus then shifts to the ATLAS experiment, beginning with a description of the detector in Chap. 2 and general physics object reconstruction and performance in Chap. 3. A specific focus is then placed on one of the most important performance aspects of the mono-jet analysis, jets, in Chaps. 4 and 5. The core of the mono-jet analysis is discussed in Chap. 6, while the interpretation of the analysis as a search for DM is contained in Chap. 7. The thesis ends with an outlook on the possible sensitivity of the analysis under future LHC conditions in Chap. 8 and an overall conclusion in Chap. 9. Experimental particle physics has evolved into a field which requires very intricate detectors and complicated research questions, where no one person can contribute to every aspect of the experiment. The ATLAS Collaboration is comprised of approximately 3000 members from across the world who have all contributed. This involves building detector components, monitoring the detector operation, translating detector signals into physics information, deriving calibrations, managing the computing resources, and any number of other tasks. In reality, any individual study relies on a significant amount of work done by other people, thus the full ATLAS author list is appended to all ATLAS publications. Similarly, this document cannot exist in isolation, as it involves both direct and indirect contributions from many individuals. Major contributions of the author within this document are listed below.