论文标题
高能核核碰撞中Tsallis样参数的激发函数
Excitation Functions of Tsallis-like Parameters in High-Energy Nucleus-Nucleus Collisions
论文作者
论文摘要
通过考虑从碰撞系统中假定是由两个参与者组成的粒子，可以通过考虑从两个参与者组成的粒子来分析，在高能量下中央核核（AA）碰撞中产生的带电亲，kaons和质子的横向动量光谱。假定每个参与者（贡献者）Parton可以通过类似Tsallis的功能来促进横向动量。两个参与者的贡献被认为是鉴定粒子的横向动量的两个组成部分。研究了在高能AA碰撞中通过国际合作测量的实验数据。提取动力学冷冻温度和横向流速度的激发函数。这两个参数从$ \ \ \ of的大约3 $迅速增加到约10 $ GEV（从2.7 GEV到7.7 GEV），然后随着碰撞能量的增加而在10 GEV以上缓慢缓慢。特别是，在动力学冻结温度的激发函数中，高原从10 GEV到200 GEV。
The transverse momentum spectra of charged pions, kaons, and protons produced at mid-rapidity in central nucleus-nucleus (AA) collisions at high energies are analyzed by considering particles to be created from two participant partons which are assumed to be contributors from the collision system. Each participant (contributor) parton is assumed to contribute to the transverse momentum by a Tsallis-like function. The contributions of the two participant partons are regarded as the two components of transverse momentum of the identified particle. The experimental data measured in high-energy AA collisions by international collaborations are studied. The excitation functions of kinetic freeze-out temperature and transverse flow velocity are extracted. The two parameters increase quickly from $\approx3$ to $\approx10$ GeV (exactly from 2.7 to 7.7 GeV) and then slowly at above 10 GeV with the increase of collision energy. In particular, there is a plateau from near 10 GeV to 200 GeV in the excitation function of kinetic freeze-out temperature.
