| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 8191705 | Physics Letters B | 2011 | 6 Pages |
Abstract
The DIRAC experiment at CERN has achieved a sizeable production of Ï+Ïâ atoms and has significantly improved the precision on its lifetime determination. From a sample of 21â227 atomic pairs, a 4% measurement of the S-wave ÏÏ scattering length difference |a0âa2|=(0.2533â0.0078+0.0080|stat|systâ0.0073+0.0078)MÏ+â1 has been attained, providing an important test of Chiral Perturbation Theory.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
B. Adeva, L. Afanasyev, M. Benayoun, A. Benelli, Z. Berka, V. Brekhovskikh, G. Caragheorgheopol, T. Cechak, M. Chiba, P.V. Chliapnikov, C. Ciocarlan, S. Constantinescu, S. Costantini, C. Curceanu (Petrascu), P. Doskarova, D. Dreossi, D. Drijard,