Kaon and hyperon production in antiproton-induced reactions on nuclei
Kaon and hyperon production in antiproton-induced reactions on nuclei
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DOI：
10.1103/physrevc.85.024614
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发表时间：
2011-07
影响因子：
3.1
通讯作者：
A. Larionov;T. Gaitanos;U. Mosel
中科院分区：
文献类型：
--
作者：
A. Larionov;T. Gaitanos;U. Mosel
在Giessen Boltzmann-Uehling-Uhlenbeck(GiBUU)输运模型下，研究了束动量从200 MeV/c~15GeV/c和静止湮灭中反质子-原子核碰撞中的奇异性产生。GiBUU模型包含了反核子-核子截面的非常详细的描述，特别是奇异性产生通道的描述。我们将我们的计算结果与实验数据进行了比较，其中包括在$overline{p}$A碰撞中，${K}_{S}^{0}$和$overline{p}$A碰撞中的实验数据，以及早期的核内级联计算。报道了不同部分通道对超子产生的贡献，并讨论了与实验的系统差异。文中还考虑了有界数学和$\ensuremath{\Lambda}\ensuremath{\Lambda}$-nucleus系统的可能形成。最后，鉴于反质子和离子研究设施即将进行的反质子束实验，给出了确保数学超子产生的结果。
We study the strangeness production in antiproton-nucleus collisions at beam momenta from 200 MeV/$c$ to 15 GeV/$c$ and in $\overline{p}$ annihilation at rest within the Giessen Boltzmann-Uehling-Uhlenbeck (GiBUU) transport model. The GiBUU model contains a very detailed description of underlying antinucleon-nucleon cross sections, in particular, of the strangeness production channels. We compare our calculations with experimental data on $\ensuremath{\Lambda}$, ${K}_{S}^{0}$, and $\overline{\ensuremath{\Lambda}}$ production in $\overline{p}$A collisions and with earlier intranuclear cascade calculations. The contributions of various partial channels to the hyperon production are reported and systematic differences with the experiment are discussed. The possible formation of bound $\ensuremath{\Lambda}$- and $\ensuremath{\Lambda}\ensuremath{\Lambda}$-nucleus systems is also considered. Finally, results on the $\ensuremath{\Xi}$ hyperon production are presented in view of forthcoming experiments with antiproton beams at the Facility for Antiproton and Ion Research.