用模型无关的不可约张量形式分析三重奇异过程p¯p→Ω¯+Ω−→K+Λ¯K−Λ→K+p¯π+K−pπ−的顺序衰减

IF 1.7 4区 物理与天体物理 Q2 PHYSICS, NUCLEAR Nuclear Physics A Pub Date : 2023-11-22 DOI:10.1016/j.nuclphysa.2023.122797
Deepak Pachattu
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引用次数: 0

摘要

建立了一个模型无关的不可约张量形式,用于分析p¯p碰撞中Ω¯Ω的产生及其随后的三奇异衰变过程,Ω¯+Ω−→K+Λ¯K−Λ→K+p¯π+K−pπ−。这些过程与PANDA即将进行的实验有关。我们不仅给出了ΩΩ¯系统的密度矩阵表达式,而且给出了衰变各阶段的产物。由此得到的Fano统计张量不仅完全表征了相关最终系统,而且给出了关节角分布的表达式。最后,我们展示了表征Ω¯Ω系统的哪些Fano统计张量可以从表征最终p¯p系统的Fano统计张量中推断出来,其中我们还获得了ΩΩ¯的生产截面与最终pp¯系统之间的关系。
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A model-independent irreducible tensor formalism to analyse the sequential decays of the triple strange process p¯p→Ω¯+Ω−→K+Λ¯K−Λ→K+p¯π+K−pπ−

A model-independent irreducible tensor formalism is developed to analyse Ω¯Ω production in p¯p collisions and its subsequent decay via the triple-strange decay process, Ω¯+ΩK+Λ¯KΛK+p¯π+Kpπ. These processes are relevant for the upcoming experiments at PANDA. We not only provide expressions for the density matrix of the ΩΩ¯ system but also for the products at each stage of the decay. The Fano statistical tensors so obtained not only completely characterize the relevant final systems but also provide expressions for joint angular distributions. Finally, we show which of the Fano statistical tensors characterizing the Ω¯Ω system can be inferred from the Fano statistical tensors characterizing the final p¯p system, wherein we also obtain the relation between the production cross sections for ΩΩ¯ and the final pp¯ system.

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来源期刊
Nuclear Physics A
Nuclear Physics A 物理-物理:核物理
CiteScore
3.60
自引率
7.10%
发文量
113
审稿时长
61 days
期刊介绍: Nuclear Physics A focuses on the domain of nuclear and hadronic physics and includes the following subsections: Nuclear Structure and Dynamics; Intermediate and High Energy Heavy Ion Physics; Hadronic Physics; Electromagnetic and Weak Interactions; Nuclear Astrophysics. The emphasis is on original research papers. A number of carefully selected and reviewed conference proceedings are published as an integral part of the journal.
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