Measurement of the forward Z boson production cross-section in pp collisions at √s=13 TeV
Measurement of the forward Z boson production cross-section in pp collisions at √s=13 TeV
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DOI：
10.1007/jhep09(2016)136
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发表时间：
2016-09-21
影响因子：
5.4
通讯作者：
Zucchelli, S.
中科院分区：
文献类型：
--
作者：
Aaij, R.;Adeva, B.;Zucchelli, S.
利用LHCb数据中的介子和介电子的最终态，给出了根s=13 TeV的pp碰撞中Z玻色子产生截面的测量方法。测量了赝快度为2.0 < eta < 4.5，横动量为20gev，双轻子不变质量为60 < m(ll) < 120gev的轻子截面。对两种最终状态进行平均得到的综合截面为sigma(ll)(Z) = 194.3+/-0.9+/-3.3+/-7.6 pb，其中第一种不确定性是统计不确定性，第二种是系统效应不确定性，第三种是光度测定不确定性。此外，微分截面作为Z玻色子速度、横向动量和角变量phi(eta)*的函数进行测量。
A measurement of the production cross-section of Z bosons in pp collisions at root s=13 TeV is presented using dimuon and dielectron final states in LHCb data. The cross-section is measured for leptons with pseudorapidities in the range 2.0 < eta < 4.5, transverse momenta pT > 20 GeV and dilepton invariant mass in the range 60 < m(ll) < 120 GeV. The integrated cross-section from averaging the two final states is sigma(ll)(Z) = 194.3+/-0.9+/-3.3+/-7.6 pb, where the first uncertainty is statistical, the second is due to systematic effects, and the third is due to the luminosity determination. In addition, differential cross-sections are measured as functions of the Z boson rapidity, transverse momentum and the angular variable phi(eta)*.