LXX International conference "NUCLEUS – 2020. Nuclear physics and elementary particle physics. Nuclear physics technologies"

MEASUREMENT OF THE NEUTRON TIMELIKE ELECTROMAGNETIC FORM FACTOR AT THE VEPP-2000 e+e- COLLIDER WITH THE SND DETECTOR

16 Oct 2020, 17:10

20m

Online

Oral report Section 4. Relativistic nuclear physics, elementary particle physics and high-energy physics. Section 4. Relativistic nuclear physics, elementary particle physics and high-energy physics

Speaker

Dr Sergey Serednyakov (Budker Institute of Nuclear Physics)

Description

The e+e- -> n+anti-n cross section has been measured in the experiment at the VEPP-2000 e+e- collider with the SND detector. The technique of the time measurements in the multichannel NaI(Tl) electromagnetic calorimeter is used to select n+anti-n events. The measured value of the cross section in the energy range from the threshold up to 2 GeV is of order of 0.5 nanobarn, what corresponds to the neutron timelike formfactor ~0.3. The presented work is supported by the RFBR grant No. 18-02-00147a.

Presentation materials

SPconf.pdf