Extraction of t slopes from experimental γp→K+Λ and γp→K+Σ0 cross section data
| Autor: | S. Adhikari, Adam Freese, Lei Guo, Brian Raue, R. A. Badui, Daniel Puentes |
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| Rok vydání: | 2017 |
| Předmět: | |
| Zdroj: | Physical Review C. 96 |
| ISSN: | 2469-9993 2469-9985 |
| Popis: | We analyze recent ${K}^{+}$ meson photoproduction data from the CLAS collaboration for the reactions $\ensuremath{\gamma}p\ensuremath{\rightarrow}{K}^{+}\mathrm{\ensuremath{\Lambda}}$ and $\ensuremath{\gamma}p\ensuremath{\rightarrow}{K}^{+}{\mathrm{\ensuremath{\Sigma}}}^{0}$, fitting measured forward-angle differential cross sections to the form $A{e}^{Bt}$. We develop a quantitative scheme for determining the kinematic region where the fit is to be done, and, from the extracted $t$-slope $B$, determine whether single-Reggeon exchange can explain the production mechanism. We find that, in the region $5lsl8.1\phantom{\rule{4pt}{0ex}}{\mathrm{GeV}}^{2}$, production of the ${K}^{+}\mathrm{\ensuremath{\Lambda}}$ channel can be explained by single ${K}^{+}$ Reggeon exchange, but the ${K}^{+}{\mathrm{\ensuremath{\Sigma}}}^{0}$ production channel cannot. We verify these conclusions by fitting the data to a differential cross section produced by the interfering sum of two exponential amplitudes. |
| Databáze: | OpenAIRE |
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