Search for dibaryon production in 4Hep interactions at medium energies

Details Search for dibaryon production in 4Hep interactions at medium energies Search for dibaryon production in 4Hep interactions at medium energies

2001-06-14

arxiv.org/abs/nucl-ex/0106012v1

Phys.Atom.Nucl. 65 (2002) 1307-1312; Yad.Fiz. 65 (2002) 1340-1345

Physics

Nuclear Physics

Nuclear Experiment

10 pages, 4 Postscript figures, uses article.sty

Scientific paper

10.1134/1.1495643

The 4Hep interactions at 2.7 GeV/c and 5 GeV/c initial momenta of alpha-particles are investigated using the 2m liquid hydrogen bubble chamber (the kinetic energies of the initial protons in the nuclear rest frame were Tp = 220 MeV and 620 MeV). The effective mass spectrum of two nucleons from the reactions 4Hep -> dppn and 4Hep -> pppnn was analysed. The narrow structure in the 2p mass spectrum from the quasi-elastic reaction p4He ->nF(pp)d at Tp = 620 MeV (where nF is the fast neutron in the nuclear rest frame) was found which is the evidence of the existence of dibaryon with a mass M2p = 2008 +- 13 MeV and a width Gamma = 20 +- 5 MeV.

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