Mersmann, T;
Khoukaz, A;
Buscher, M;
Chiladze, D;
Dymov, S;
Hartmann, M;
Hejny, V;
... Wronska, A; + view all
(2007)
Precision study of the eta He-3 system using the dp -> He-3 eta reaction.
PHYS REV LETT
, 98
(24)
, Article 242301. 10.1103/PhysRevLett.98.242301.
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Abstract
The differential and total cross sections for the dp -> He-3 eta reaction have been measured in a high precision high statistics COSY-ANKE experiment near threshold using a continuous beam energy ramp up to an excess energy Q of 11.3 MeV with essentially 100% acceptance. The kinematics allowed the mean value of Q to be determined to about 9 keV. Evidence is found for the effects of higher partial waves for Q greater than or similar to 4 MeV. The very rapid rise of the total cross section to its maximum value within 0.5 MeV of threshold implies a very large eta He-3 scattering length and hence the presence of a quasibound state extremely close to threshold.
| Type: | Article |
|---|---|
| Title: | Precision study of the eta He-3 system using the dp -> He-3 eta reaction |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.98.242301 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.98.242301 |
| Language: | English |
| Additional information: | © 2007 The American Physical Society |
| Keywords: | NEAR-THRESHOLD, ETA, SCATTERING |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/154172 |
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