STI Publications - View Publication Form #16738
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Publication Information
| Title | Elastic Positron-Proton Scattering at Low Q2 | ||||
| Abstract | Systematic differences in the the proton's charge radius, as determined by ordinary atoms and muonic atoms, have caused a resurgence of interest in elastic lepton scattering measurements. The proton's charge radius, defined as the slope of the charge form factor at Q$^2$=0, does not depend on the probe. Any difference in the apparent size of the proton, when determined from ordinary versus muonic hydrogen, could point to new physics or need for the higher order corrections. While recent measurements seem to now be in agreement, there is to date no high precision elastic scattering data with both electrons and positrons. A high precision proton radius measurement could be performed in Hall B at Jefferson Lab with a positron beam and the calorimeter based setup of the PRad experiment. This measurement could also be extended to deuterons where a similar discrepancy has been observed between the muonic and electronic determination of deuteron charge radius. A new, high precision measuremen | ||||
| Author(s) | Tyler Hague, Dipangkar Dutta, Douglas Higinbotham, Xinzhan Bai, Haiyan Gao, Ashot Gasparian, Kondo Gnanvo, Vladimir Khachatryan, Mahbub Khandaker, Nilanga Liyanage, Eugene Pasyuk, Chao Peng, Weizhi Xiong, Jingyi Zhou | ||||
| Publication Date | June 2021 | ||||
| Document Type | Journal Article | ||||
| Primary Institution | Thomas Jefferson National Accelerator Facility, Newport News | ||||
| Affiliation | Exp Nuclear Physics / Experimental Halls / Hall B | ||||
| Funding Source | Nuclear Physics (NP), FG02-03ER41231 | ||||
| Proprietary? | No | ||||
| This publication conveys | Technical Science Results | ||||
| Document Numbers |
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| Associated with an experiment | Yes | ||||
| Experiment Number(s) |
E12-20-004
E12-11-106
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| Associated with EIC | No | ||||
| Supported by Jefferson Lab LDRD Funding | No |
Journal Article
| Journal Name | European Physical Journal A |
| Refereed | Yes |
| Volume | 57 |
| Issue | |
| Page(s) | 199 |
Attachments/Datasets/DOI Link
| Document(s) |
2102.11449.pdf
(STI Document)
2102.11449.pdf
(Accepted Manuscript)
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| DOI Link | |
| Dataset(s) | (none) |
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