https://doi.org/10.1140/epjd/e2009-00110-1
Low energy o-Ps–o-Ps elastic scattering using a simple model
1
University Department of Physics, Veer Kunwar Singh University, Arrah, 802301 Bihar, India
2
P. G. Department of Physics, R N College, Hajipur (Vaishali)-844101, Bihar, India
3
Department of Theoretical Physics, Indian Association for the Cultivation of Science, Jadavpur, Kolkata, 700 032, India
Corresponding author: a sumanachin@gmail.com
Received:
21
January
2009
Revised:
4
March
2009
Published online:
26
March
2009
A simple model is employed to investigate o-Ps–o-Ps scattering at low energies. This model contains the effect of exchange explicitly and a model long range potential in the framework of static-exchange model. These two physical features are of key importance in Ps-Ps (atom-atom) scattering system. S-wave triplet-triplet and singlet-singlet scattering lengths and corresponding phase shifts up to the incident momentum k=0.5 a.u. are in excellent agreement with those yielded by most elaborate and theoretically sound predictions.
PACS: 36.10.Dr – Positronium / 34.50.-s – Scattering of atoms and molecules
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2009
