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Author:   Evan Shockley
Publisher:   Springer Nature Switzerland AG
Imprint:   Springer Nature Switzerland AG
Edition:   1st ed. 2021
Weight:   0.215kg
ISBN:  

9783030877545

ISBN 10:   303087754
Pages:   119
Publication Date:   01 November 2022
Audience:   Professional and scholarly ,  Professional & Vocational
Format:   Paperback
Publisher's Status:   Active
Availability:   Manufactured on demand  
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Table of Contents

TABLE OF CONTENTSLIST OF FIGURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viLIST OF TABLES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiiiACKNOWLEDGMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xivABSTRACT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv1 SEARCHING FOR NEW PHYSICS WITH XENON1T . . . . . . . . . . . . . . . 11.1 The XENON1T Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21.1.1 The S1 signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51.1.2 The S2 signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61.1.3 Position reconstruction . . . . . . . . . . . . . . . . . . . . . . . . . . 81.1.4 Particle discrimination: electronic vs. nuclear recoils . . . . . . . . . 81.1.5 Background reduction . . . . . . . . . . . . . . . . . . . . . . . . . . 101.2 Physics reach of XENON1T . . . . . . . . . . . . . . . . . . . . . . . . . . . 111.2.1 Solar axions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111.2.2 Neutrino magnetic moment . . . . . . . . . . . . . . . . . . . . . . . 201.2.3 Bosonic dark matter . . . . . . . . . . . . . . . . . . . . . . . . . . . 242 EVENT RECONSTRUCTION AND SELECTION . . . . . . . . . . . . . . . . . 262.1 Energy Reconstruction and Resolution . . . . . . . . . . . . . . . . . . . . . 262.1.1 Energy Reconstruction . . . . . . . . . . . . . . . . . . . . . . . . . . 262.1.2 Energy Resolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . 382.2 Detection Eciency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 412.2.1 Single Photoelectron Acceptance . . . . . . . . . . . . . . . . . . . . 422.2.2 Reconstruction Eciency . . . . . . . . . . . . . . . . . . . . . . . . . 482.2.3 Eciency as function of charge . . . . . . . . . . . . . . . . . . . . . 562.2.4 Eciency as function of reconstructed energy . . . . . . . . . . . . . 572.3 Event Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 633 BACKGROUND + SIGNAL MODELING AND STATISTICAL METHODS . . . 673.1 Background Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 673.2 Signal Modeling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 813.3 Statistical Framework . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 834 RESULTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 944.1 Background-only t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 944.2 Investigating the excess . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1004.3 Potential Backgrounds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1094.3.1 Xenon x-rays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1094.3.2 37Ar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110iv4.3.3 Tritium . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1134.4 Searches for new physics in XENON1T ER data . . . . . . . . . . . . . . . . 1174.5 Search for solar axions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1184.5.1 Main Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1184.5.2 Interpretation under specic QCD models . . . . . . . . . . . . . . . 1244.5.3 Including tritium as a background . . . . . . . . . . . . . . . . . . . . 1304.6 Search for an enhanced neutrino magnetic moment . . . . . . . . . . . . . . 1334.6.1 Main Result . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1334.6.2 Including tritium as a background . . . . . . . . . . . . . . . . . . . . 1364.7 Bosonic Dark Matter Results . . . . . . . . . . . . . . . . . . . . . . . . . . 1364.8 Science Run 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1404.9 Time Dependence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1424.10 Updated Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1454.10.1 Summary of updates . . . . . . . . . . . . . . . . . . . . . . . . . . . 1454.10.2 Results of updated analysis . . . . . . . . . . . . . . . . . . . . . . . 1485 CONCLUSIONS AND OUTLOOK . . . . . . . . . . . . . . . . . . . . . . . . . . 1525.1 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1525.2 Outlook: XENONnT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1555.3 Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156REFERENCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157v

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Author Information

Evan Shockley is currently a postdoctoral scholar at UC San Diego. He obtained his PhD from the University of Chicago in 2020 after earning a MS from the University of Chicago in 2016 and a BA from Saint Mary’s University of Minnesota in 2014. In his final year at University of Chicago he was granted a Grainger Fellowship by the physics department for outstanding experimental research. A member of the XENON collaboration, his research interests center around the search for physics beyond the standard model using some of the world’s most sensitive particle detectors.

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