论文标题
$ \ sqrt {s_ \ mathrm {nn}} = 8.16 \，\ Mathrm {tev} $的$ z $玻色子生产横截面
Measurement of the $Z$ boson production cross-section in proton-lead collisions at $\sqrt{s_\mathrm{NN}}=8.16\,\mathrm{TeV}$
论文作者
论文摘要
本文使用质子铅碰撞与LHCB检测器介绍了向前区域中差异$ z $ -BOSON生产横截面的首次测量。该数据集是在2016年以$ \ sqrt {s_ \ mathrm {nn}} = 8.16 \，\ Mathrm {tev} $的核核核质量中心收集的，该数据集在2016年收集。前向后的比率和核修饰因子与差分横截面一起测量，作为$ z $玻色子速度的函数，在质量中部框架中，$ z $ boson的横向动量和几何变量$ ϕ^{*} $。结果与核部分分配功能的预测非常吻合，在小bjorken- $ x $的情况下提供了强大的约束功率。
This article presents the first measurement of the differential $Z$-boson production cross-section in the forward region using proton-lead collisions with the LHCb detector. The dataset was collected at a nucleon-nucleon centre-of-mass energy of $\sqrt{s_\mathrm{NN}}=8.16\,\mathrm{TeV}$ in 2016, corresponding to an integrated luminosity of $30.8\,\mathrm{nb}^{-1}$. The forward-backward ratio and the nuclear modification factors are measured together with the differential cross-section as functions of the $Z$ boson rapidity in the centre-of-mass frame, the transverse momentum of the $Z$ boson and a geometric variable $ϕ^{*}$. The results are in good agreement with the predictions from nuclear parton distribution functions, providing strong constraining power at small Bjorken-$x$.
