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arXiv 1403.4572nucl-thhep-ph
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158 A GeV高能铅-铅碰撞中氘核和反氘核产生的一些性质

On some properties of Deuteron and Antideuteron production in high energy lead-lead collisions at 158A GeV

Goutam Sau, S. Bhattacharyya

备注：
15 Pages, 09 Figures, Accepted for publication in IJMPE. arXiv admin note: text overlap with arXiv:1111.6813, arXiv:1011.2095
发表信息：
International Journal of Modern Physics E, Vol. 23, No. 4 (2014) 1450021 (16 pages)
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摘要：

本文试图了解NA 49合作组最近报道的158 A GeV铅-铅$(Pb+Pb)$碰撞中产生氘（$d$）和反氘（$\overline{d}$）的横动量谱（$p_T$）和快度谱（$y$）的一些性质。从产生次级质子-反质子的$p+p$反应的一些基本性质出发，分析产生复合粒子组（如$d$和$\overline{d}$）的情况。一些比率行为也将按照同样的方法处理。据发现，在这里投入使用的模型的组合捕捉适度以及一些重要的观测数据的趋势。最后指出了该方法的局限性。

英文摘要：

We would attempt here to understand some properties of the transverse momentum ($p_T$) and rapidity ($y$) spectra on production of deuteron ($d$) and antideuteron($\overline{d}$) in lead-lead $(Pb+Pb)$ collisions at 158A GeV recently reported by NA49 collaboration. Starting from some basic properties of $p+p$ reactions for production of secondary proton-antiprotons the cases of production of the composite set of particles, like $d$ and $\overline{d}$, would be analysed. Some ratio-behaviours would also be dealt with in the light of the same approaches. It is found that the combination of the models put into use here capture modestly well the trends of the data on some important observables. Some limitations of the approach would also be pointed out in the end.

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