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EnglishThe rate of the reaction anti-p p to e+e- has been measured in liquid hydrogen for antiprotons at momentum values between 150 and 300 MeV/c. New precise values of the proton electromagnetic form factor in the time-like region have been obtained assuming |Ge|=|Gm| in the investigated region. The q2 dependence of the form factor close to threshold is found to have a steeper slope than indicated by existing calculations based on vector dominance models.
| Titolo: | MEASUREMENT OF THE PROTON ELECTROMAGNETIC FORM-FACTOR NEAR THRESHOLD IN THE TIME-LIKE REGION | |
| Autori: | ||
| Data di pubblicazione: | 1991 | |
| Rivista: | ||
| Abstract: | The rate of the reaction anti-p p to e+e- has been measured in liquid hydrogen for antiprotons at momentum values between 150 and 300 MeV/c. New precise values of the proton electromagnetic form factor in the time-like region have been obtained assuming |Ge|=|Gm| in the investigated region. The q2 dependence of the form factor close to threshold is found to have a steeper slope than indicated by existing calculations based on vector dominance models. | |
| Handle: | http://hdl.handle.net/11577/125654 | |
| Appare nelle tipologie: | 01.01 - Articolo in rivista |
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