论文标题
相关参数对高能量碰撞中横向动量光谱的新处理中的中心性和质量的依赖性
Dependence of related parameters on centrality and mass in a new treatment for transverse momentum spectra in high energy collisions
论文作者
论文摘要
We collected the experimental data of transverse momentum spectra of identified particles produced in proton-proton ($p$-$p$), deuteron-gold ($d$-Au or $d$-$A$), gold-gold (Au-Au or $A$-$A$), proton-lead ($p$-Pb or $p$-$A$), and lead-lead (Pb-Pb or $A$-$A$)由爱丽丝，CMS，LHCB，NA49，NA61/SHINE，PHENIX和Star协作在不同质量中心的碰撞中测量的碰撞。夸克级别或参与者夸克模型的多源热模型用于描述实验数据。在修订后的tsallis-Pareto-type函数中，提取了免费参数，有效温度$ t $，与熵索引相关的$ n $和修订的索引$ a_ {0} $，在夸克级别提取。在大多数情况下，$ t $和$ n $的中央冲突大于外围碰撞的中央碰撞，而$ a_0 $在不同的中心类别中不会改变。随着生产粒子或参与者夸克的质量增加，$ t $和$ a_0 $增加，$ n $不会发生显着变化。相关参数的行为来自$ p $ - $ p $，$ p（d）$ - $ a $，$ a $ - $ a $ collisions的行为相似。
We collected the experimental data of transverse momentum spectra of identified particles produced in proton-proton ($p$-$p$), deuteron-gold ($d$-Au or $d$-$A$), gold-gold (Au-Au or $A$-$A$), proton-lead ($p$-Pb or $p$-$A$), and lead-lead (Pb-Pb or $A$-$A$) collisions measured by the ALICE, CMS, LHCb, NA49, NA61/SHINE, PHENIX, and STAR collaborations at different center-of mass energies. The multisource thermal model at the quark level or the participant quark model is used to describe the experimental data. The free parameters, the effective temperature $T$, entropy index-related $n$, and revised index $a_{0}$, in the revised Tsallis--Pareto-type function are extracted at the quark level. In most cases, $T$ and $n$ in central collisions are larger than those in peripheral collisions, and $a_0$ does not change in different centrality classes. With the increase in the mass of produced particle or participant quark, $T$ and $a_0$ increase, and $n$ does not change significantly. The behaviors of related parameters from $p$-$p$, $p(d)$-$A$, and $A$-$A$ collisions are similar.
