RHIC能区反物质和奇特粒子态研究
Recent progress on antimatter and exotic strange particles study at RHIC
查看参考文献31篇
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文摘
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本文介绍了我们在相对论重离子对撞机上进行反物质奇特粒子态研究上的新进展.主要包括:通过反质子-反质子动量关联函数研究,提取出反质子间相互作用的有效力程和散射长度等关键物理参数,在实验上实现反物质间相互作用力的首次测量,结果表明反质子之间存在较强的吸引力,足够克服反质子-反质子之间的排斥力,结合成反物质原子核;通过质子-Ω及其反粒子对动量关联函数测量,在实验上寻找多奇异性双重子态,实验结果表明质子与Ω超子之间存在强的吸引,约为27 MeV,远大于氘核的结合能. |
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其他语种文摘
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We introduce the recent progress on antimatter and exotic strange dibaryon study from our group. The main contents include two parts: we measure the interactions between antimatters via antiprotons correlations in relativistic heavy-ion colliders. The results suggest that there is a strong attraction between antiprotons, enough to overcome the Coulomb repulsive force between antiprotons, combined into antimatter nucleus. We measure the interactions between proton-Ω and their antiparticle pairs via two particle correlations to search for a possible p-Ω diabryon. Our results, in comparison with LQCD prediction, slightly favors a proton-Ω bound system with a binding energy of ~27 MeV. Our value is much larger than the binding energy of proton and neutron in a deuteron. |
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来源
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中国科学. 物理学
, 力学, 天文学,2019,49(10):102002 【核心库】
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DOI
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10.1360/SSPMA-2019-0045
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关键词
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相对论重离子对撞机
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大型强子对撞机
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反物质原子核
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超子
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双重子态
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地址
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1.
复旦大学现代物理研究所, 核物理与离子束应用教育部重点实验室, 上海, 200433
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中国科学院上海应用物理研究所, 上海, 201800
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1674-7275 |
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学科
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物理学 |
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基金
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国家973计划
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国家自然科学基金
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中国科学院前沿科学重点研究项目
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中国科学院B类先导科技专项培育项目
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国家重点基础研究发展计划(973计划)
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文献收藏号
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CSCD:6579486
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