论文标题
j/$ψ$在p $ - $ pb碰撞的中间差异$ \ sqrt {s _ {\ rm nn}} = 8.16 $ tev
J/$ψ$ production at midrapidity in p$-$Pb collisions at $\sqrt{s_{\rm NN}} = 8.16$ TeV
论文作者
论文摘要
在$ \ \ sqrt {s _ {s _ {\ rm nn}} = 8.16 $ t的P $ - $ pb碰撞中，首次研究了首次研究中的包含，及时和非临床J/$ψ$的生产。包含在横向动量（$ p _ {\ rm t} $）间隔$ 0 <p _ {\ rm t} <14 $ gev/$ gev/$ gev/$ gev/$ c $和迅速和非预报的贡献的统计基础上，$ p _ = $ c _ {在Alice Online单电子触发器中首次使用的Dielectron通道中的J/$ψ$介子从过渡辐射探测器中使用的研究提供了与$ 689 \ pm13μ{\ rm B}^$ 689 \ pm13μ{\ rm B}^{ - 1} $相对应的数据样本。质子$ - $ - $质子参考横截面的包含J/$ψ$是根据不同质量质量能量的测量数据的插值以及描述$ p _ {\ rm t} $ - 微分j/$ chinial J/$ψ$生产交叉部分的通用功能获得的。 $ p _ {\ rm t} $ - 差异核修饰因子$ r _ {\ rm ppb} $包含，及时和非临床J/$ψ$的$ r _ {\ rm ppb} $与统一性一致，并通过实施核阴影的理论模型描述。
The production of inclusive, prompt and non-prompt J/$ψ$ was studied for the first time at midrapidity ($ -1.37 < y_{\rm cms} < 0.43$) in p$-$Pb collisions at $\sqrt{s_{\rm NN}} = 8.16$ TeV with the ALICE detector at the LHC. The inclusive J/$ψ$ mesons were reconstructed in the dielectron decay channel in the transverse momentum ($p_{\rm T}$) interval $0 < p_{\rm T} < 14$ GeV/$c$ and the prompt and non-prompt contributions were separated on a statistical basis for $p_{\rm T} > 2$ GeV/$c$. The study of the J/$ψ$ mesons in the dielectron channel used for the first time in ALICE online single-electron triggers from the Transition Radiation Detector, providing a data sample corresponding to an integrated luminosity of $689 \pm 13 μ{\rm b}^{-1}$. The proton$-$proton reference cross section for inclusive J/$ψ$ was obtained based on interpolations of measured data at different centre-of-mass energies and a universal function describing the $p_{\rm T}$-differential J/$ψ$ production cross sections. The $p_{\rm T}$-differential nuclear modification factors $R_{\rm pPb}$ of inclusive, prompt, and non-prompt J/$ψ$ are consistent with unity and described by theoretical models implementing only nuclear shadowing.
