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Selected highlights of the production of light (anti-)(hyper-)nuclei in ultra-relativistic heavy-ion collisions
The European Physical Journal A ( IF 2.7 ) Pub Date : 2020-11-04 , DOI: 10.1140/epja/s10050-020-00275-w
Benjamin Dönigus

The production of light (anti-)nuclei and (anti-)hypernuclei in ultra-relativistic heavy-ion collisions, but also in more elementary collisions as proton–proton and proton–nucleus collisions, became recently a focus of interest. In particular, the fact that these objects are all loosely bound compared to the temperature and energies, e.g. the kinetic energies involved, is often stressed out to be special for their production. The binding energies of these (anti-)nuclei is between 130 keV (\({\mathrm {\Lambda }}\) separation energy in the hypertriton) and about 8 MeV per nucleon. Whereas the connected temperatures are of the order of 100 to 160 MeV. This lead to some difficulties in the interpretation of the usually discussed production models, i.e. coalescence and statistical-thermal models, as will be discussed here. In this brief review we discuss selected highlights of the production of light (anti-)nuclei, such as (anti-)deuteron, (anti-)helium and (anti-)alpha nuclei. In addition, we will discuss the current status of the highly debated lifetime of the (anti-)hypertriton and connected measurements and model results.



中文翻译:

超相对论重离子碰撞中产生轻(反)(超)核的精选亮点

在超相对论重离子碰撞中,以及在更基本的碰撞中,如质子-质子和质子-核碰撞,产生轻(反)核和(反)超核成为了人们关注的焦点。特别地,通常强调这些物体与温度和能量(例如所涉及的动能)相比都是松散结合的,这对于它们的生产是特别重要的。这些(反)核的结合能在130 keV之间(\({\ mathrm {\ Lambda}} \)高超子的分离能量)和每个核子约8 MeV。而连接的温度约为100到160 MeV。这将导致在解释通常讨论的生产模型(即合并模型和统计热模型)时遇到一些困难,这将在此处进行讨论。在这篇简短的综述中,我们讨论了光(反)核产生的精选亮点,例如(反)氘核,(反)氦和(反)α核。此外,我们将讨论(反)超triton的生命周期以及相关的测量结果和模型结果。

更新日期:2020-11-04
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