The contribution of two-photon exchange in elastic lepton-proton scattering
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Physics, 2017.
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| Format: | Thesis |
| Language: | eng |
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Massachusetts Institute of Technology
2017
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| Online Access: | http://hdl.handle.net/1721.1/112007 |
| _version_ | 1811002768072114176 |
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| author | O'Connor, Colton David Graham |
| author2 | Robert Redwine. |
| author_facet | Robert Redwine. O'Connor, Colton David Graham |
| author_sort | O'Connor, Colton David Graham |
| collection | MIT |
| description | Thesis: Ph. D., Massachusetts Institute of Technology, Department of Physics, 2017. |
| first_indexed | 2024-09-23T15:53:46Z |
| format | Thesis |
| id | mit-1721.1/112007 |
| institution | Massachusetts Institute of Technology |
| language | eng |
| last_indexed | 2024-09-23T15:53:46Z |
| publishDate | 2017 |
| publisher | Massachusetts Institute of Technology |
| record_format | dspace |
| spelling | mit-1721.1/1120072019-04-12T22:45:49Z The contribution of two-photon exchange in elastic lepton-proton scattering contribution of 2-photon exchange in elastic lepton-proton scattering O'Connor, Colton David Graham Robert Redwine. Massachusetts Institute of Technology. Department of Physics. Massachusetts Institute of Technology. Department of Physics. Physics. Thesis: Ph. D., Massachusetts Institute of Technology, Department of Physics, 2017. This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections. Cataloged from student-submitted PDF version of thesis. Includes bibliographical references (pages 297-307). Measurements of the electric-to-magnetic ratio of the proton's elastic form factors, GE/GM, have recently been shown to diverge at high momentum transfer, Q2, based on which of two experimental methods is employed. Reanalysis of all results might be able to bring them into agreement if some previously neglected correction were introduced whose magnitude increases with Q2. In the high-energy community, two-photon exchange has become the favored candidate for such a correction. But theoretical models disagree on the size and form of a two-photon exchange correction term entering into elastic lepton-proton scattering and existent empirical data is not sufficiently precise to settle the matter. OLYMPUS is one of several new experiments designed to evaluate R2[gamma], the ratio of the elastic cross sections for positron-proton and electron-proton scattering, whose difference from unity provides a direct measure of the amplitude of the two-photon exchange matrix elements. In this dissertation, OLYMPUS is considered from its motivation, construction, and operation to its analysis, along with the associated Monte Carlo simulation. Special attention is given to the symmetric Møller/Bhabha detector system, which is not described in full elsewhere. The results achieved by the OLYMPUS collaboration, reported herein, achieve unprecedented precision over a wide kinematic range and make a significant contribution to the understanding of two-photon exchange. by Colton David Graham O'Connor. Ph. D. 2017-10-30T15:04:06Z 2017-10-30T15:04:06Z 2017 2017 Thesis http://hdl.handle.net/1721.1/112007 1006740475 eng MIT theses are protected by copyright. They may be viewed, downloaded, or printed from this source but further reproduction or distribution in any format is prohibited without written permission. http://dspace.mit.edu/handle/1721.1/7582 307 pages application/pdf Massachusetts Institute of Technology |
| spellingShingle | Physics. O'Connor, Colton David Graham The contribution of two-photon exchange in elastic lepton-proton scattering |
| title | The contribution of two-photon exchange in elastic lepton-proton scattering |
| title_full | The contribution of two-photon exchange in elastic lepton-proton scattering |
| title_fullStr | The contribution of two-photon exchange in elastic lepton-proton scattering |
| title_full_unstemmed | The contribution of two-photon exchange in elastic lepton-proton scattering |
| title_short | The contribution of two-photon exchange in elastic lepton-proton scattering |
| title_sort | contribution of two photon exchange in elastic lepton proton scattering |
| topic | Physics. |
| url | http://hdl.handle.net/1721.1/112007 |
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