Measurement of the neutron timelike electromagnetic form factor with the
  SND detector

Achasov, M. N.; Barnyakov, A. Yu.; Bedarev, E. V.; Beloborodov, K. I.; Berdyugin, A. V.; Berkaev, D. E.; Bogdanchikov, A. G.; Botov, A. A.; Dimova, T. V.; Druzhinin, V. P.; Kardapoltsev, E. V.; Kasaev, A. S.; Kharlamov, A. G.; Koop, I. A.; Korol, A. A.; Kovrizhin, D. P.; Kryukov, A. P.; Kupich, A. S.; Lysenko, A. P.; Melnikova, N. A.; Muchnoy, N. Yu.; Obrazovsky, A. E.; Pakhtusova, E. V.; Pugachev, K. V.; Rastigeev, S. A.; Rogovsky, Yu. A.; Serednyakov, S. I.; Shatunov, Yu. M.; Shtol, D. A.; Silagadze, Z. K.; SND Collaboration; Surin, I. K.; Usov, Yu. V.; Zhabin, V. N.; Zharinov, Yu. M.

Measurement of the neutron timelike electromagnetic form factor with the SND detector

Abstract

The results of the measurement of the

e^+e^- \to n \bar{n}

cross section and effective neutron timelike form factor are presented. The data taking was carried out in 2020-2021 at the VEPP-2000

e^+e^-

collider in the center-of-mass energy range from 1891 to 2007 MeV. The general purpose nonmagnetic detector SND is used to detect neutron-antineutron events. The event selection is performed using the time-of-flight technique. The measured cross section is 0.4-0.6 nb. The neutron form factor in the energy range under study varies from 0.3 to 0.2.Comment: 13 pages, 8 figure

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Last time updated on 06/10/2023