论文标题
$ {\ rm k}^*（892）^0 $和$ ϕ（1020）$生产p-pb碰撞的$ {\ rm k}^*的多样性和速度依赖性，$ \ sqrt {s _ {\ rm nn}} $ = 5.02
Multiplicity and rapidity dependence of ${\rm K}^*(892)^0$ and $ϕ(1020)$ production in p-Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV
论文作者
论文摘要
transversemontum（$ p _ {\ rm t} $）的光谱为$ {\ rm k}^*（892）^0 $和$ ϕ（1020）$，使用爱丽丝检测器最多$ p _ {\ rm t} $ = 16 GEV/$ c $ collity collity $ -1.2.2.2.3.3.3.3.3.3.3.3.3.3.3 Nucleon-Nucleon碰撞$ \ sqrt {s _ {\ rm nn}} $ = 5.02 TEV作为带电粒子多样性和速度的函数。测得的$ p _ {\ rm t} $分布在低$ p _ {\ rm t} $时显示了对多重性和速度的依赖性，而在高$ p _ {\ rm t} $上没有观察到显着的依赖性。在$ p _ {\ rm t} $ - 集成收益率（d $ n $/d $ y $）中观察到了速度依赖性，而平均横向动量（$ \ weft <p _ {\ rm t} \ right> $）显示出一种平坦的行为。在低$ p _ {\ rm t} $（<5 Gev/$ c $）的速度不对称（$ y _ {\ rm asym} $）对于更高的多重类别而言更为重要。在高$ p _ {\ rm t} $时，在任何多个类别中均未观察到明显的速度不对称性。 $ {\ rm k}^*（892）^0 $和$ ϕ（1020）$显示相似的$ y _ {\ rm asym} $。核修饰因子（$ q _ {\ rm cp} $）作为$ p _ {\ rm t} $的函数，在中间$ p _ {\ rm t} $上显示了类似cronin的增强功能，这在更高的快速方向（PB驱动方向）和较高的多重性类别更为突出。在高$ p _ {\ rm t} $（> 5 Gev/$ c $）时，$ q _ {\ rm cp} $值大于统一，并且未观察到显着的速度依赖性。
The transverse-momentum ($p_{\rm T}$) spectra of ${\rm K}^*(892)^0$ and $ϕ(1020)$ measured with the ALICE detector up to $p_{\rm T}$ = 16 GeV/$c$ in the rapidity range $-1.2 < y < 0.3$, in p-Pb collisions at the center-of-mass energy per nucleon-nucleon collision $\sqrt{s_{\rm NN}}$ = 5.02 TeV are presented as a function of charged particle multiplicity and rapidity. The measured $p_{\rm T}$ distributions show a dependence on both multiplicity and rapidity at low $p_{\rm T}$ whereas no significant dependence is observed at high $p_{\rm T}$. A rapidity dependence is observed in the $p_{\rm T}$-integrated yield (d$N$/d$y$), whereas the mean transverse momentum ($\left< p_{\rm T} \right>$) shows a flat behavior as a function of rapidity. The rapidity asymmetry ($Y_{\rm asym}$) at low $p_{\rm T}$ ( < 5 GeV/$c$) is more significant for higher multiplicity classes. At high $p_{\rm T}$, no significant rapidity asymmetry is observed in any of the multiplicity classes. Both ${\rm K}^*(892)^0$ and $ϕ(1020)$ show similar $Y_{\rm asym}$. The nuclear modification factor ($Q_{\rm CP}$) as a function of $p_{\rm T}$ shows a Cronin-like enhancement at intermediate $p_{\rm T}$, which is more prominent at higher rapidities (Pb-going direction) and in higher multiplicity classes. At high $p_{\rm T}$ (> 5 GeV/$c$), the $Q_{\rm CP}$ values are greater than unity and no significant rapidity dependence is observed.
