On S-wave resonances at energies just above the Ps formation threshold
- 28 April 1994
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic, Molecular and Optical Physics
- Vol. 27 (8) , L179-L185
- https://doi.org/10.1088/0953-4075/27/8/008
Abstract
We have performed an accurate calculation of S-wave positron-hydrogen scattering at energies just above the Ps formation threshold, employing a variational method. The coupling schemes we considered for the calculation were 1sH-1sPs, 1sH-2sH-1sPs, 1sH-2sH-1sPs-2sPs, 1sH-2sH-2pH-1sPs, 1sH-2sH-2pH-1sPs-2sPs and 1sH-2sH-2pH-1sPs-2sPs-2pPs. We could not find in our elastic cross sections the two adjacent resonances that Sarkar et al. (1993) reported to exist in this energy region.Keywords
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