Abstract
The antineutron-proton total cross 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.
| Original language | English |
|---|---|
| Pages (from-to) | 378-385 |
| Number of pages | 8 |
| Journal | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
| Volume | 475 |
| Issue number | 3-4 |
| DOIs | |
| Publication status | Published - 2 Mar 2000 |
| Externally published | Yes |
Keywords
- Antineutron-proton total cross section
- Isospin 1 system
- OBELIX spectrometer
- Quasi-nuclear antinucleon-nucleon states
- Transmission technique