Production and decays of hyperons in p+p reactions measured with HADES
Abstract. Preliminary results of inclusive σ+(1385) production in p + p reactions at Ebeam = 4.5 GeV and Λ(1520) in p + p and p + Nb at Ebeam = 3.5 GeV are presented. Both measurements were performed by the HADES ("High Acceptance Di-Electron Spectrometer") experiment at FAIR/GSI. The anal...
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| Format: | Article |
| Language: | English |
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EDP Sciences
2024-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | https://www.epj-conferences.org/articles/epjconf/pdf/2024/01/epjconf_meson2023_05008.pdf |
| _version_ | 1797299414735257600 |
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| author | Sumara Konrad |
| author_facet | Sumara Konrad |
| author_sort | Sumara Konrad |
| collection | DOAJ |
| description | Abstract. Preliminary results of inclusive σ+(1385) production in p + p reactions at Ebeam = 4.5 GeV and Λ(1520) in p + p and p + Nb at Ebeam = 3.5 GeV are presented. Both measurements were performed by the HADES ("High Acceptance Di-Electron Spectrometer") experiment at FAIR/GSI. The analysis consisted of multiple steps including track reconstruction, particle identification and the reconstruction of the hyperon signal from their hadronic decays Λ(1520) → Λπ+π− and σ+(1385) → Λπ+. The main part of the analysis, which is signal/background classification, was performed utilizing Machine Learning methods. The employed method relied on a data-driven approach called “Classification Without Labels" and the Multilayer Perceptron style Artificial Neural Networks. The analysis resulted in reconstruction of the resonance distributions for both σ+(1385) and Λ(1520), and allowed for the extraction of parameters of the relativistic Breit-Wigner distributions. |
| first_indexed | 2024-03-07T22:49:19Z |
| format | Article |
| id | doaj.art-4ecbcf1e275c4f84a7f1431dee92f7d1 |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-03-07T22:49:19Z |
| publishDate | 2024-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-4ecbcf1e275c4f84a7f1431dee92f7d12024-02-23T10:28:26ZengEDP SciencesEPJ Web of Conferences2100-014X2024-01-012910500810.1051/epjconf/202429105008epjconf_meson2023_05008Production and decays of hyperons in p+p reactions measured with HADESSumara Konrad0Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian UniversityAbstract. Preliminary results of inclusive σ+(1385) production in p + p reactions at Ebeam = 4.5 GeV and Λ(1520) in p + p and p + Nb at Ebeam = 3.5 GeV are presented. Both measurements were performed by the HADES ("High Acceptance Di-Electron Spectrometer") experiment at FAIR/GSI. The analysis consisted of multiple steps including track reconstruction, particle identification and the reconstruction of the hyperon signal from their hadronic decays Λ(1520) → Λπ+π− and σ+(1385) → Λπ+. The main part of the analysis, which is signal/background classification, was performed utilizing Machine Learning methods. The employed method relied on a data-driven approach called “Classification Without Labels" and the Multilayer Perceptron style Artificial Neural Networks. The analysis resulted in reconstruction of the resonance distributions for both σ+(1385) and Λ(1520), and allowed for the extraction of parameters of the relativistic Breit-Wigner distributions.https://www.epj-conferences.org/articles/epjconf/pdf/2024/01/epjconf_meson2023_05008.pdf |
| spellingShingle | Sumara Konrad Production and decays of hyperons in p+p reactions measured with HADES EPJ Web of Conferences |
| title | Production and decays of hyperons in p+p reactions measured with HADES |
| title_full | Production and decays of hyperons in p+p reactions measured with HADES |
| title_fullStr | Production and decays of hyperons in p+p reactions measured with HADES |
| title_full_unstemmed | Production and decays of hyperons in p+p reactions measured with HADES |
| title_short | Production and decays of hyperons in p+p reactions measured with HADES |
| title_sort | production and decays of hyperons in p p reactions measured with hades |
| url | https://www.epj-conferences.org/articles/epjconf/pdf/2024/01/epjconf_meson2023_05008.pdf |
| work_keys_str_mv | AT sumarakonrad productionanddecaysofhyperonsinppreactionsmeasuredwithhades |