Isospin-symmetry breaking in kaon production: the role of charge-symmetry
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arXiv
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| Format: | Preprint |
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2024
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| _version_ | 1866909322321068032 |
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| author | Giacosa, Francesco |
| author_facet | Giacosa, Francesco |
| contents | An excess of charged versus neutral kaons has been recently reported by the NA61/SHINE collaboration. Similar excesses were also present in previous experiments, even if with larger errors. Models for hadron productions in heavy ion collisions systematically underestimate the measured charge-to-neutral kaon ratio. In this report, we comment on the role of charge-symmetry as a specific isospin transformation. In particular, we show that the ensemble of the initial colliding nuclei being charge-symmetric is sufficient for producing an equal number of charged and neutral kaons in the isospin-symmetry exact limit. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2409_14763 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Isospin-symmetry breaking in kaon production: the role of charge-symmetry Giacosa, Francesco Nuclear Theory High Energy Physics - Phenomenology An excess of charged versus neutral kaons has been recently reported by the NA61/SHINE collaboration. Similar excesses were also present in previous experiments, even if with larger errors. Models for hadron productions in heavy ion collisions systematically underestimate the measured charge-to-neutral kaon ratio. In this report, we comment on the role of charge-symmetry as a specific isospin transformation. In particular, we show that the ensemble of the initial colliding nuclei being charge-symmetric is sufficient for producing an equal number of charged and neutral kaons in the isospin-symmetry exact limit. |
| title | Isospin-symmetry breaking in kaon production: the role of charge-symmetry |
| topic | Nuclear Theory High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2409.14763 |