论文标题
\ sqrt {s_ {nn}} = 7.7-54.4 GEV中奇怪的强子产生的碰撞中心性和能量依赖性
Collision centrality and energy dependence of strange hadron production in Au + Au collisions at \sqrt{s_{NN}}= 7.7-54.4 GeV
论文作者
论文摘要
我们将同等的夸克组合模型应用于系统地研究奇怪的Hadrons k_ {s}^{0}，ϕ，λ，λ，ξ^{ - }，Ω^{ - ω^{ - }，\barλ，\barλ，\barλ，\ bar的+cill octing in Indi in Ind Indi in Indi niid in IIND IIN+ciNDI的奇怪Hadrons k_ {s}^{0}的横向动量（p_ {t}）光谱\ sqrt {s_ {nn}} = 7.7、11.5、19.6、27、39、54.4 GEV。在\ sqrt {s_ {nn}} = 27、39、54.4 GEV和中央碰撞时，这八个黑龙的模型计算与实验数据之间的相对偏差通常约为2-3％。在\ sqrt {s_ {nn}} = 7.7、11.5、19.6 GEV处的半居所和外围碰撞中，偏差略有增加到约4％。我们系统地解释了两个baryon to-meson比率的依赖性\barλ/k_ {s}^{0}和ω/ϕON p_ {t}，夸克p_ {t} t} thenronization时Quark P_ {t}的属性碰撞中心和碰撞能量。我们得出了Hadron和夸克的R_ {CP}之间的分析关系，并使用它们自然解释了这些奇怪的Hadron的R_ {CP}的物种和P_ {T}依赖性。
We apply an equal-velocity quark combination model to systematically study the transverse momentum (p_{T}) spectra of strange hadrons K_{S}^{0}, ϕ, Λ, Ξ^{-}, Ω^{-}, \barΛ, \barΞ^{+} and \barΩ^{+} at mid-rapidity in Au+Au collisions at \sqrt{s_{NN}}= 7.7, 11.5, 19.6, 27, 39, 54.4 GeV. Relative deviation between the model calculation and experimental data of these eight hadrons is generally about 2-3% at \sqrt{s_{NN}}= 27, 39, 54.4 GeV and in central collisions at 7.7, 11.5, 19.6 GeV. The deviation slightly increases up to about 4% in the semi-central and peripheral collision at \sqrt{s_{NN}}= 7.7, 11.5, 19.6 GeV. We systematically explain the dependence of two baryon-to-meson ratios \barΛ/K_{S}^{0} and Ω/ϕon p_{T}, collision centrality and collision energy by the property of quark p_{T} spectra at hadronization. We derive the analytic relations between R_{CP} of hadrons and those of quarks, and we use them to naturally explain the species and p_{T} dependence of R_{CP} of those strange hadrons.
