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

V.P. Druzhinin, S.I. Serednyakov, M.N. Achasov, F.V. Ignatov, P.P. Krokovny
2019 EPJ Web of Conferences  
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 .
doi:10.1051/epjconf/201921207007 fatcat:4zqtnbb75ncuphhy6g3yai4tdy