Study of QED processes e+ e- -->e+ e- gamma, e+ e- gamma gamma with the SND detector at VEPP-2M
/ Authors
M.N.Achasov, S.E.Baru, A.V.Bozhenok, A.D.Bukin, D.A.Bukin, S.V.Burdin, T.V.Dimova, S.I.Dolinsky, V.P.Druzhinin, M.S.Dubrovin
and 14 more authors
I.A.Gaponenko, V.B.Golubev, V.N.Ivanchenko, A.A.Korol, S.V.Koshuba, A.P.Lysenko, I.N.Nesterenko, E.V.Pakhtusova, S.I.Serednyakov, V.V.Shary, Yu.M.Shatunov, V.A.Sidorov, Z.K.Silagadze, Yu.V.Usov
/ Abstract
. Results of the SND experiment at the VEPP-2M e + e − collider on the QED processes e + e − → e + e − γ and e + e − → e + e − γγ with production at large angles are presented. Energy and angular distributions of the final particles were studied. No deviations from QED with an accuracy of 3.8% for the first process and 10.3% for the second were found.