Speaker
Mrs
Айнур Кунсафина
(Галымгазыкызы)
Description
Recently, after the discovery of the d∗(2380) two-baryon resonance(D03), a candidate for the true dibaryon, it has been found that the puzzling ABC effect is associated with its excitation. Therefore this phenomenon has attracted a particular attention.
Here we present the observation of the ABC effect and D03 excitation in
pd→pdππ reaction via meson exchange in coherent kinematics.
An experimental study of the double pion production at the 0.8–2.0 GeV proton energies in the process p+d→p+d+(ππ)0 has been performed.
A distribution of the events over the dππ invariant mass revealed a clear peak at the 2.36 GeV/c2 mass with 104 MeV/c2 width. The parameters of the peak are close to those observed earlier WASA experiment at CELSIUS COSY, taking into account its possible broadening due to the meson exchange and the I = 1 contamination in the (ππ)0 pairs.
Primary authors
Zhanibek Kurmanaliyev
(Joint Institute for Nuclear Reserch)
Mrs
Айнур Кунсафина
(Галымгазыкызы)
Co-author
Mr
Dmitry Tsirkov
(JINR)
