论文标题
相对于k $^{0} _ {\ rm s} $和$λ$（$ \barλ$）在pp和$ \ mathbf {\ mathbf {\ it \ it \ sqrt {s_ \ mathrm {nn}} $ = 5.02 $ = 5.02 TEV中
Jet-like correlations with respect to K$^{0}_{\rm S}$ and $Λ$ ($\barΛ$) in pp and central Pb-Pb collisions at $\mathbf{\it\sqrt{s_\mathrm{NN}}}$ = 5.02 TeV
论文作者
论文摘要
两粒子与$ {\ rm k}^{0} _ {\ rm {s}} $，$λ$/$ \barλ$，并指控hadrons作为触发粒子在横向动量范围$ 8 <p _ p_ \ p_ \ natrig { p_ \ mathrm {t，soscs} <8 $ gev/$ c $，在PP和中央PB-PB碰撞中以每核质量 - 核核糖碰撞$ \ sqrt {s _ {s _ {\ Mathrm {nn}}} = 5.02 $ TECTET at lhice at lh c collice进行了pp/$ c $。减去流程背景的贡献后，近距离和近距离侧面提取了每触发的产率，并且在PB-PB碰撞中相对于PP碰撞（$ i _ {\ Mathrm {aa}} $）的比率是计算的。在外面的PB-PB碰撞中的每触发产量被强烈抑制至$ i _ {\ Mathrm {\ Mathrm {aa}} \约0.6 $，大约0.6 $，大约0.6 $，$ p_ \ mathrm {t，t，cossec}> 3 $ gev/$ c $，预期的是，从强大的$ p _ inth ythers n of Maths and Maths and Maths and Mathers and Maths a freatim and a n Maths and s inth and Mathers and Mathers and Mathers and s frop Mathers and Mathers and Mathers andrms \ \ \侧面，分别达到$ i _ {\ Mathrm {aa}} \大约1.8 $和$ 2.7 $。这些发现与以前的Alice测量相吻合，这是由中性亲（$π^{0} $ -H）触发的两粒子相关性和PB-PB碰撞中带电的Hadrons（H-H）触发的，$ \ sqrt {此外，将与$ {\ rm k}^{0} _ {\ rm {s}} $梅森和$λ$/$ \barλ$ baryons作为触发粒子的相关性与包容性的Hadrons进行了比较。将结果与蒙特卡洛模型的预测进行了比较。
Two-particle correlations with ${\rm K}^{0}_{\rm{S}}$, $Λ$/$\barΛ$, and charged hadrons as trigger particles in the transverse momentum range $8 < p_\mathrm{T,trig}<16$ GeV/$c$, and associated charged particles within $1 < p_\mathrm{T,assoc}<8$ GeV/$c$, are studied at mid-rapidity in pp and central Pb-Pb collisions at a centre-of-mass energy per nucleon-nucleon collision $\sqrt{s_{\mathrm{NN}}} = 5.02$ TeV with the ALICE detector at the LHC. After subtracting the contributions of the flow background, the per-trigger yields are extracted on both the near and away sides, and the ratio in Pb-Pb collisions with respect to pp collisions ($I_{\mathrm {AA}}$) is computed. The per-trigger yield in Pb-Pb collisions on the away side is strongly suppressed to the level of $I_{\mathrm {AA}} \approx 0.6$ for $p_\mathrm{T,assoc}>3$ GeV/$c$ as expected from strong in-medium energy loss, while an enhancement develops at low $p_\mathrm{T,assoc}$ on both the near and away sides, reaching $I_{\mathrm {AA}} \approx 1.8$ and $2.7$ respectively. These findings are in good agreement with previous ALICE measurements from two-particle correlations triggered by neutral pions ($π^{0}$-h) and charged hadrons (h-h) in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}} = 2.76$ TeV. Moreover, the correlations with ${\rm K}^{0}_{\rm{S}}$ mesons and $Λ$/$\barΛ$ baryons as trigger particles are compared to those of inclusive charged hadrons. The results are compared with the predictions of Monte Carlo models.
