Feasibility studies of production and electromagnetic decay studies of hyperons for HADES
The spectrum of excited states of single and double strange hyperons is only poorly known. Their internal structure is controversially discussed within quark, bag and molecular models. The most famous example is Λ(1405). In this context radiative decays are predicted to be an ideal tool to discrimin...
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doaj-e5bb19988fef4aadad649febdabf2d8d2021-08-02T01:33:57ZengEDP SciencesEPJ Web of Conferences2100-014X2019-01-011990301110.1051/epjconf/201919903011epjconf_meson2019_03011Feasibility studies of production and electromagnetic decay studies of hyperons for HADESNowakowski Krzysztof0Kuboś Joanna1Jagiellonian UniversityInstitute of Nuclear Physics PASThe spectrum of excited states of single and double strange hyperons is only poorly known. Their internal structure is controversially discussed within quark, bag and molecular models. The most famous example is Λ(1405). In this context radiative decays are predicted to be an ideal tool to discriminate between various predictions. Moreover, Ξ− production yield measured by HADES in Ar+KCl@1.76 GeV and p+Nb@3.5 GeV experiments strongly overshoots theory predictions and calls for more detailed studies in elementary collisions. In our poster we show results of the feasibility studies for the HADES detector of the cascade production close to the threshold and also the radiative decays of the excited hyperon states. Three bench mark channels: pp→Λ(15020)K+p→Λe+e−K+p$pp \to \Lambda (15020){K^ + }p \to \Lambda {e^ + }{e^ - }{K^ + }p$, pp→Λ(1405)K+p→Λe+e−K+p$pp \to \Lambda (1405){K^ + }p \to \Lambda {e^ + }{e^ - }{K^ + }p$ and pp→Σ(1385)K+p→Λe+e−K+p$pp \to \Sigma (1385){K^ + }p \to \Lambda {e^ + }{e^ - }{K^ + }p$, at beam energy Ek = 4.5 GeV have been put into extensive simulation studies together with the most significant background channels. We will show the results including expected count rates and signal to background ratios.https://www.epj-conferences.org/articles/epjconf/pdf/2019/04/epjconf_meson2019_03011.pdf |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Nowakowski Krzysztof Kuboś Joanna |
spellingShingle |
Nowakowski Krzysztof Kuboś Joanna Feasibility studies of production and electromagnetic decay studies of hyperons for HADES EPJ Web of Conferences |
author_facet |
Nowakowski Krzysztof Kuboś Joanna |
author_sort |
Nowakowski Krzysztof |
title |
Feasibility studies of production and electromagnetic decay studies of hyperons for HADES |
title_short |
Feasibility studies of production and electromagnetic decay studies of hyperons for HADES |
title_full |
Feasibility studies of production and electromagnetic decay studies of hyperons for HADES |
title_fullStr |
Feasibility studies of production and electromagnetic decay studies of hyperons for HADES |
title_full_unstemmed |
Feasibility studies of production and electromagnetic decay studies of hyperons for HADES |
title_sort |
feasibility studies of production and electromagnetic decay studies of hyperons for hades |
publisher |
EDP Sciences |
series |
EPJ Web of Conferences |
issn |
2100-014X |
publishDate |
2019-01-01 |
description |
The spectrum of excited states of single and double strange hyperons is only poorly known. Their internal structure is controversially discussed within quark, bag and molecular models. The most famous example is Λ(1405). In this context radiative decays are predicted to be an ideal tool to discriminate between various predictions. Moreover, Ξ− production yield measured by HADES in Ar+KCl@1.76 GeV and p+Nb@3.5 GeV experiments strongly overshoots theory predictions and calls for more detailed studies in elementary collisions. In our poster we show results of the feasibility studies for the HADES detector of the cascade production close to the threshold and also the radiative decays of the excited hyperon states. Three bench mark channels: pp→Λ(15020)K+p→Λe+e−K+p$pp \to \Lambda (15020){K^ + }p \to \Lambda {e^ + }{e^ - }{K^ + }p$, pp→Λ(1405)K+p→Λe+e−K+p$pp \to \Lambda (1405){K^ + }p \to \Lambda {e^ + }{e^ - }{K^ + }p$ and pp→Σ(1385)K+p→Λe+e−K+p$pp \to \Sigma (1385){K^ + }p \to \Lambda {e^ + }{e^ - }{K^ + }p$, at beam energy Ek = 4.5 GeV have been put into extensive simulation studies together with the most significant background channels. We will show the results including expected count rates and signal to background ratios. |
url |
https://www.epj-conferences.org/articles/epjconf/pdf/2019/04/epjconf_meson2019_03011.pdf |
work_keys_str_mv |
AT nowakowskikrzysztof feasibilitystudiesofproductionandelectromagneticdecaystudiesofhyperonsforhades AT kubosjoanna feasibilitystudiesofproductionandelectromagneticdecaystudiesofhyperonsforhades |
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