Observation of the
antimatter helium-4 nucleus
Nature
473 (2011) 353 (arXiv: 1103.3312)
Figure 4
png
| Particle spices |
d2N/2πPTdPTdy (c2/GeV2)
|
Statistical errors |
Systematical errors |
| p |
4.12 |
± 0.04 |
- 1.85 |
| p-bar |
3.27 |
± 0.02 |
- 1.47 |
| d |
2.8e-03 |
± 0.7e-03 |
± 0.7e-03 |
| d-bar |
1.2e-03 |
± 0.3e-03 |
± 0.3e-03 |
| 3He |
2.85e-06 |
± 0.30e-6 |
+ 0.29 - 1.14e-06 |
| 3He-bar |
1.02e-06 |
± 0.11e-06 |
+ 0.10 - 0.41e-06 |
| 4He |
8.6e-09 |
± 3.8e-09 |
+ 0.9 - 2.8e-09 |
| 4He-bar |
3.3e-09 |
± 2.4e-09 |
+ 0.5 - 0.9e-09 |
For any questions please contact STAR Physics Analysis
Coordinator : Xin Dong - XDong@lbl.gov