Results of analysis of Σ+p scattering events in J-PARC E40 experiment: differential cross sections and phase shifts of 3S1 and 1P1 states
We performed a novel Σ+p scattering experiment at the J-PARC Hadron Experimental Facility. Approximately 2400 Σ+p scattering events were identified by a kinematical consistency check for the recoil proton. The differential cross sections of the Σ+p elastic scattering were derived with better precisi...
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| Format: | Article |
| Language: | English |
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EDP Sciences
2022-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | https://www.epj-conferences.org/articles/epjconf/pdf/2022/15/epjconf_hyp2022_04002.pdf |
| _version_ | 1811179703825858560 |
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| author | Nanamura Takuya Miwa Koji Hayakawa Shuhei H. Honda Ryotaro Nakada Yoshiyuki Takahashi Toshiyuki Ukai Mifuyu Yamamoto Takeshi O. |
| author_facet | Nanamura Takuya Miwa Koji Hayakawa Shuhei H. Honda Ryotaro Nakada Yoshiyuki Takahashi Toshiyuki Ukai Mifuyu Yamamoto Takeshi O. |
| author_sort | Nanamura Takuya |
| collection | DOAJ |
| description | We performed a novel Σ+p scattering experiment at the J-PARC Hadron Experimental Facility. Approximately 2400 Σ+p scattering events were identified by a kinematical consistency check for the recoil proton. The differential cross sections of the Σ+p elastic scattering were derived with better precision than in previous experiments. By exploiting high-quality differential cross section data and the simple representation of Σ+p interaction in the SU(3) flavor symmetry, we performed a phase-shift analysis on hyperon-nucleon scattering data for the first time. The absolute value of the phase shift of the 3S1 channel, where a large repulsive force was predicted due to the Pauli exclusive effect between quarks, was evaluated. These results indicate that the interaction of the 3S1 channel in the Σ+p channel is moderately repulsive, as the Nijmegen extended-soft-core models predicted. |
| first_indexed | 2024-04-11T06:37:56Z |
| format | Article |
| id | doaj.art-4418f0eb6b8b4de7b6e6dba8e5f004dc |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-04-11T06:37:56Z |
| publishDate | 2022-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-4418f0eb6b8b4de7b6e6dba8e5f004dc2022-12-22T04:39:37ZengEDP SciencesEPJ Web of Conferences2100-014X2022-01-012710400210.1051/epjconf/202227104002epjconf_hyp2022_04002Results of analysis of Σ+p scattering events in J-PARC E40 experiment: differential cross sections and phase shifts of 3S1 and 1P1 statesNanamura Takuya0Miwa Koji1Hayakawa Shuhei H.2Honda Ryotaro3Nakada Yoshiyuki4Takahashi Toshiyuki5Ukai Mifuyu6Yamamoto Takeshi O.7Department of Physics, Kyoto UniversityDepartment of Physics, Tohoku UniversityDepartment of Physics, Tohoku UniversityInstitute of Particle and Nuclear Studies (IPNS), High Energy Accelerator Research Organization (KEK)Department of Physics, Osaka UniversityInstitute of Particle and Nuclear Studies (IPNS), High Energy Accelerator Research Organization (KEK)Department of Physics, Tohoku UniversityAdvanced Science Research Center (ASRC), Japan Atomic Energy Agency (JAEA), TokaiWe performed a novel Σ+p scattering experiment at the J-PARC Hadron Experimental Facility. Approximately 2400 Σ+p scattering events were identified by a kinematical consistency check for the recoil proton. The differential cross sections of the Σ+p elastic scattering were derived with better precision than in previous experiments. By exploiting high-quality differential cross section data and the simple representation of Σ+p interaction in the SU(3) flavor symmetry, we performed a phase-shift analysis on hyperon-nucleon scattering data for the first time. The absolute value of the phase shift of the 3S1 channel, where a large repulsive force was predicted due to the Pauli exclusive effect between quarks, was evaluated. These results indicate that the interaction of the 3S1 channel in the Σ+p channel is moderately repulsive, as the Nijmegen extended-soft-core models predicted.https://www.epj-conferences.org/articles/epjconf/pdf/2022/15/epjconf_hyp2022_04002.pdf |
| spellingShingle | Nanamura Takuya Miwa Koji Hayakawa Shuhei H. Honda Ryotaro Nakada Yoshiyuki Takahashi Toshiyuki Ukai Mifuyu Yamamoto Takeshi O. Results of analysis of Σ+p scattering events in J-PARC E40 experiment: differential cross sections and phase shifts of 3S1 and 1P1 states EPJ Web of Conferences |
| title | Results of analysis of Σ+p scattering events in J-PARC E40 experiment: differential cross sections and phase shifts of 3S1 and 1P1 states |
| title_full | Results of analysis of Σ+p scattering events in J-PARC E40 experiment: differential cross sections and phase shifts of 3S1 and 1P1 states |
| title_fullStr | Results of analysis of Σ+p scattering events in J-PARC E40 experiment: differential cross sections and phase shifts of 3S1 and 1P1 states |
| title_full_unstemmed | Results of analysis of Σ+p scattering events in J-PARC E40 experiment: differential cross sections and phase shifts of 3S1 and 1P1 states |
| title_short | Results of analysis of Σ+p scattering events in J-PARC E40 experiment: differential cross sections and phase shifts of 3S1 and 1P1 states |
| title_sort | results of analysis of σ p scattering events in j parc e40 experiment differential cross sections and phase shifts of 3s1 and 1p1 states |
| url | https://www.epj-conferences.org/articles/epjconf/pdf/2022/15/epjconf_hyp2022_04002.pdf |
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