Studying Exotic Hadrons in Heavy Ion Collisions
Studying Exotic Hadrons in Heavy Ion Collisions
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DOI：
10.1103/physrevc.84.064910
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发表时间：
2011-07
影响因子：
3.1
通讯作者：
E. S. Cho;T. Furumoto;T. Hyodo;D. Jido;C. Ko;S. H. Lee;M. Nielsen;A. Ohnishi;T. Sekihara;S. Yasui;K. Yazaki
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文献类型：
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作者：
E. S. Cho;T. Furumoto;T. Hyodo;D. Jido;C. Ko;S. H. Lee;M. Nielsen;A. Ohnishi;T. Sekihara;S. Yasui;K. Yazaki
我们研究了在目前和未来的重离子碰撞实验中使用测量来回答强子物理中一些长期存在的问题的可能性，即用多夸克分量来识别强子分子态和奇异强子。通过与统计模型的比较，在聚结模型中讨论了相对论重离子碰撞中选定的一组奇异强子候选者的产额。我们发现，当强子是致密的多夸克态时，它的产额通常比正常夸克数的激发强子态的产额小一个数量级。我们还发现，一些松散束缚的强子分子的形成比统计模型预测的要丰富两倍或更多。此外，由于RHIC产生了大量的魅力和底夸克，而大型强子对撞机预计会产生更多的底夸克，一些被提出的重奇异强子可以产生足够的丰度来探测，这使得在重离子碰撞中研究这些新的奇异强子成为可能。
We investigate the possibilities of using measurements in present and future experiments on heavy ion collisions to answer some longstanding problems in hadronic physics, namely identifying hadronic molecular states and exotic hadrons with multiquark components. The yields of a selected set of exotic hadron candidates in relativistic heavy ion collisions are discussed in the coalescence model in comparison with the statistical model. We find that the yield of a hadron is typically an order of magnitude smaller when it is a compact multiquark state, compared to that of an excited hadronic state with normal quark numbers. We also find that some loosely bound hadronic molecules are formed more abundantly than the statistical model prediction by a factor of two or more. Moreover, due to the significant numbers of charm and bottom quarks produced at RHIC and even larger numbers expected at LHC, some of the proposed heavy exotic hadrons could be produced with sufficient abundance for detection, making it possible to study these new exotic hadrons in heavy ion collisions.