The antineutron-proton total doss section has been measured in the low momentum range 50-400 MeV/c (below 100 MeV/c for the first time). The measurement was performed at LEAR (CERN) by the OBELIX experiment, thanks to its unique antineutron beam facility. A thick target transmission technique has been used. The measured total cross section shows an anomalous behaviour below 100 MeV/c. A dominance of the isospin I = 0 channel over the I = 1 one at low energy is clearly deduced. (C) 2000 Elsevier Science B.V. All lights reserved. RI Bonomi, Germano/G-4236-2010; Galli, Domenico/A-1606-2012; Villa, Mauro/C-9883-2009; Iazzi, Felice/F-4490-2012; Botta, Elena/G-9742-2012; Fontana, Andrea/I-4375-2012; Filippi, Alessandra/I-9530-2012
Antineutron-proton total cross section from 50 to 400 MeV/c
PUDDU, GIOVANNA;USAI, GIANLUCA;
2000-01-01
Abstract
The antineutron-proton total doss section has been measured in the low momentum range 50-400 MeV/c (below 100 MeV/c for the first time). The measurement was performed at LEAR (CERN) by the OBELIX experiment, thanks to its unique antineutron beam facility. A thick target transmission technique has been used. The measured total cross section shows an anomalous behaviour below 100 MeV/c. A dominance of the isospin I = 0 channel over the I = 1 one at low energy is clearly deduced. (C) 2000 Elsevier Science B.V. All lights reserved. RI Bonomi, Germano/G-4236-2010; Galli, Domenico/A-1606-2012; Villa, Mauro/C-9883-2009; Iazzi, Felice/F-4490-2012; Botta, Elena/G-9742-2012; Fontana, Andrea/I-4375-2012; Filippi, Alessandra/I-9530-2012
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