STI Publications - View Publication Form #16701
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Publication Information
| Title | The size of the Proton: Recent Results from the PRad Experiment | ||||
| Abstract | Two new extremely high precision measurements of the proton rms charge radius performed in 2010-2013 with muonic hydrogen atom demonstrated up to six standard deviations smaller values than the accepted average from all previous experiments performed with different methods (scattering and atomic spectroscopy) on ordinary hydrogen. This discrepancy triggered the well-known ¿proton radius puzzle¿ in hadronic physics. To address this puzzle, the PRad collaboration in spring of 2016 performed a novel magnetic-spectrometer-free ep-scattering experiment in Hall B at Jefferson Lab accumulating high statistics and a rich experimental data set. The specifics of the PRad experiment and the final physics results, including the extracted proton radius, as well as, the current status of the puzzle will be presented and discussed in this talk. | ||||
| Author(s) | Ashot Gasparian | ||||
| Publication Date | May 2021 | ||||
| Document Type | Meeting | ||||
| Primary Institution | Thomas Jefferson National Accelerator Facility, Newport News | ||||
| Affiliation | Exp Nuclear Physics / Experimental Halls / Hall B | ||||
| Funding Source | Nuclear Physics (NP) | ||||
| Proprietary? | No | ||||
| This publication conveys | Technical Science Results | ||||
| Document Numbers |
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| Associated with an experiment | No | ||||
| Associated with EIC | No | ||||
| Supported by Jefferson Lab LDRD Funding | No |
Meeting / Conference
| Meeting Name | MESON 2021 (16th International Workshop on Meson Physics) |
| Meeting Date | 5/17/2021 |
| Document Subtype | Invited Talk (slides) |
Attachments/Datasets/DOI Link
| Document(s) | (none) |
| Dataset(s) | (none) |
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