arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2302.13071hep-phhep-ex
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极化超子-反超子对的产生与衰变

Production and decay of polarized hyperon-antihyperon pairs

Karin Schönning, Varvara Batozskaya, Patrik Adlarson, Xiaorong Zhou

AI总结:

该研究探讨极化超子-反超子对的产生与衰变,利用BESIII实验新数据发展高精度方法,揭示强相互作用机制并检验标准模型,为未来PANDA和STCF等设施的精密物理研究奠定基础。

摘要:

极化超子-反超子对为当代物理学中诸多未解之谜提供了线索:强相互作用如何将夸克禁闭于强子中,Standard Model(标准模型)描述微观世界的准确程度,乃至为何我们的宇宙包含的物质远多于反物质。得益于其弱相互作用和宇称破坏衰变,超子揭示了自旋特性。这可被用于超子电磁结构的分解、味对称性的精确测试以及CP破坏的搜寻。在北京的BEPC-II上的BESIII实验中,可大量产生超子-反超子对。近期收集的大样本促成了新方法的发展,提供了前所未有的精度,并涌现出大量新结果。若应用于PANDA和STCF等未来的高强度设施,精密物理将迈上新台阶,有助于解决上述谜题。

英文摘要:

Polarized hyperon-antihyperon pairs shed light on various unresolved puzzles in contemporary physics: How the strong interaction confines quarks into hadrons, how accurately the Standard Model describes microcosmos and even why our universe consists of so much more matter than antimatter. Thanks to their weak, parity violating decays, hyperons reveal their spin properties. This can be exploited e.g. the decomposition of the electromagnetic structure of hyperons, precision tests of flavour symmetry and searches for CP violation. At the BESIII experiment at BEPC-II, Beijing, China, hyperon-antihyperon pairs can be produced in abundance. Recently collected large data samples have triggered the development of new methods that provide unprecedented precision and a plethora of new results have emerged. When applied at future high-intensity facilities like PANDA and STCF, precision physics will be taken to a new level which can contribute to the solution to the aforementioned puzzles.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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