Correlations of net baryon number and electric charge in nuclear matter
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| Main Authors: | , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866912733150052352 |
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| author | Yang, Xin-ran Shao, Guo-yun Xie, Chong-long Li, Zhi-Peng |
| author_facet | Yang, Xin-ran Shao, Guo-yun Xie, Chong-long Li, Zhi-Peng |
| contents | We investigate the correlations between net baryon number and electric charge up to sixth order related to the interactions of nuclear matter at low temperature, and explore their relationship with the nuclear liquid-gas phase transition (LGPT) within the framework of the nonlinear Walecka model. The calculation shows that strong correlations between the baryon number and electric charge exist in the vicinity of LGPT, and the higher order correlations are more sensitive than the lower order ones near the phase transition. However, in the high-temperature region away from the LGPT the rescaled lower order correlations are relatively larger than most of the higher order ones. Besides, some of the fifth- and sixth-order correlations possibly change the sign from negative to positive along the chemical freeze-out line with the decrease of temperature. In combination with the future experimental projects at lower collision energies, the derived results can be referred to study the phase structure of strongly interacting matter and analyze the related experimental signals. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_15542 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Correlations of net baryon number and electric charge in nuclear matter Yang, Xin-ran Shao, Guo-yun Xie, Chong-long Li, Zhi-Peng High Energy Physics - Phenomenology Nuclear Theory We investigate the correlations between net baryon number and electric charge up to sixth order related to the interactions of nuclear matter at low temperature, and explore their relationship with the nuclear liquid-gas phase transition (LGPT) within the framework of the nonlinear Walecka model. The calculation shows that strong correlations between the baryon number and electric charge exist in the vicinity of LGPT, and the higher order correlations are more sensitive than the lower order ones near the phase transition. However, in the high-temperature region away from the LGPT the rescaled lower order correlations are relatively larger than most of the higher order ones. Besides, some of the fifth- and sixth-order correlations possibly change the sign from negative to positive along the chemical freeze-out line with the decrease of temperature. In combination with the future experimental projects at lower collision energies, the derived results can be referred to study the phase structure of strongly interacting matter and analyze the related experimental signals. |
| title | Correlations of net baryon number and electric charge in nuclear matter |
| topic | High Energy Physics - Phenomenology Nuclear Theory |
| url | https://arxiv.org/abs/2412.15542 |