On the $Λ$ to $Σ^0$ ratio from proton-proton collisions
| dc.creator | Sibirtsev, A. | |
| dc.creator | Tsushima, K. | |
| dc.creator | Cassing, W. | |
| dc.creator | Thomas, A. W. | |
| dc.date | 2000-04-10 | |
| dc.date | 2000-05-05 | |
| dc.date.accessioned | 2026-07-07T05:38:02Z | |
| dc.date.available | 2026-07-07T05:38:02Z | |
| dc.description | We compare the recent COSY data on the total $pp{\to}pΛ{K^+}$ and $pp{\to}pΣ^0{K^+}$ cross sections with the predictions from two boson exchange models that either are based solely on $π$ and $K$ exchange or include $π$, $η$ and $ρ$ exchange as well as the virtual excitation of intermediate baryon resonances. Both models are found to reproduce the data after the inclusion of final state hyperon-nucleon interactions. Thus, within the experimental uncertainties, both models also roughly reproduce the strong dependence of the $Λ$ to $Σ^0$ ratio as a function of the excess energy near threshold, as well as at higher energies. | |
| dc.description | 5 pages, espcrc2-style, including 4 figures | |
| dc.identifier | https://arxiv.org/abs/nucl-th/0004022 | |
| dc.identifier | http://arxiv.org/abs/nucl-th/0004022 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/81478 | |
| dc.subject | Nuclear Theory | |
| dc.title | On the $Λ$ to $Σ^0$ ratio from proton-proton collisions | |
| dc.type | text |