EPJ Web of Conferences (Jan 2019)

Measurement of the e+e−→ nn̅ cross section with the SND detector at the VEPP-2000 collider

  • Druzhinin V.P.,
  • Serednyakov S.I.

DOI
https://doi.org/10.1051/epjconf/201921207007
Journal volume & issue
Vol. 212
p. 07007

Abstract

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New measurement of the e+e−→ nn̅cross section based on the data set recorded in 2017 with the SND detector at the VEPP-2000 e+e− collider is presented.Inthe energyrangefromthe thresholdupto2GeVthe cross section is almost flat. Its average value is 0.5 nb. The polar angle distribution indicates dominanceof the magnetic formfactor GM .