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Study of the process $e^+e^-to pbar{p}$ in the c.m. energy range from threshold to 2 GeV with the CMD-3 detector

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 نشر من قبل Alexander S. Popov
 تاريخ النشر 2015
  مجال البحث
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Using a data sample of 6.8 pb$^{-1}$ collected with the CMD-3 detector at the VEPP-2000 $e^+e^-$ collider we select about 2700 events of the $e^+e^- to pbar{p}$ process and measure its cross section at 12 energy ponts with about 6% systematic uncertainty. From the angular distribution of produced nucleons we obtain the ratio $|G_{E}/G_{M}| = 1.49 pm 0.23 pm 0.30$.

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