论文标题
改性光味的强体光谱对统计强化模型中颗粒产量的影响
Influence of modified light-flavor hadron spectra on particle yields in the statistical hadronization model
论文作者
论文摘要
相对论核冲突中的强子产生在统计强调模型（SHM）的框架中得到很好的描述。我们研究了通过添加了大约500个新状态的lattice QCD和相对论夸克模型所预测的大约500个新状态，研究了对浅味巴元和介子的SHM预测的影响。在SQRT（S_NN）= 2.76 TEV上获得的PBPB碰撞数据获得的热力学拟合质量的恶化表明，在SHM方法中还需要考虑其他状态以及非国家之间的相互作用以及非共鸣的贡献。通过测得的相移确定的PION核子相互作用纳入这些作用，再次导致实验数据的出色繁殖。这有很大的迹象表明，至少无法理解额外的核子激发态并用作独立共振。
Hadron production in relativistic nuclear collisions is well described in the framework of the Statistical Hadronization Model (SHM). We investigate the influence on SHM predictions of hadron mass spectra for light-flavor baryons and mesons modified by the addition of about 500 new states as predicted by lattice QCD and a relativistic quark model. The deterioration of the resulting thermodynamic fit quality obtained for PbPb collision data at sqrt(s_nn) = 2.76 TeV suggests that the additional states are not suited to be naively used since also interactions among the states as well as non-resonant contributions need to be considered in the SHM approach. Incorporating these effects via the pion nucleon interaction determined from measured phase shifts leads again to excellent reproduction of the experimental data. This is a strong indication that at least the additional nucleon excited states cannot be understood and used as independent resonances.
