Analysis of the Lambda p Final State Interaction in the Reaction p+p->K^+(Lambda p)
摘要
The missing mass spectrum measured in high resolution studies of the reaction pp -> K^+X is analyzed with respect to the strong final state interaction near the Lambda p production threshold. The observed spectrum can be described by factorizing the reaction amplitude in terms of a production amplitude and a final state scattering amplitude. Parametrizing the Lambda p final state interaction in terms of the inverse Jost function allows a direct extraction of the low-energy phase-equivalent potential parameters. Constraints on the singlet and triplet scattering lengths and effective ranges are deduced in a simultaneous fit of the Lambda p invariant mass spectrum and the total cross section data of the free Lambda p scattering using the effective range approximation.
引用
@article{arxiv.nucl-ex/0402021,
title = {Analysis of the Lambda p Final State Interaction in the Reaction p+p->K^+(Lambda p)},
author = {F. Hinterberger and A. Sibirtsev},
journal= {arXiv preprint arXiv:nucl-ex/0402021},
year = {2009}
}
备注
9 pages,6 figures, 2 tables