Measurement of the ZZ production cross section in proton-proton collisions at s = 8 $$ \sqrt{s}=8 $$ TeV using the ZZ ? l-l+l'-l'+ and Z Z ? l - l + ? ? ¯ $$ ZZ\to {\ell}^{-}{\ell}^{+}\nu \overline{\nu} $$ decay channels with the ATLAS detector
Measurement of the ZZ production cross section in proton-proton collisions at s = 8 $$ \sqrt{s}=8 $$ TeV using the ZZ ? l-l+l'-l'+ and Z Z ? l - l + ? ? ¯ $$ ZZ\to {\ell}^{-}{\ell}^{+}\nu \overline{\nu} $$ decay channels with the ATLAS detector
复制标题
使用 ZZ 测量 s = 8 $$ sqrt{s}=8 $$ TeV 时质子-质子碰撞中的 ZZ 产生截面
DOI：
10.1007/jhep01(2017)099
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发表时间：
2017
影响因子：
5.4
通讯作者：
Aaboud M
中科院分区：
文献类型：
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作者：
Aaboud M
利用2012年ATLAS实验收集的积分光度为20.3 fb− 1的数据，在欧洲核子研究中心的大型强子对撞机上，测量了TeV质子-质子碰撞中，在π − π + π ′− π ′+和通道（π = e，μ）中的ZZ产生截面。在选定的相空间区域中测量ZZ→ <$− <$+<$′− <$′+和的基准截面。两个Z玻色子在66 - 116 GeV的质量范围内产生的ZZ事件的总截面由两个通道的组合测量为7.3±0.4（stat）±0.3（syst）− 0.2− 0.1（lumi）pb，这与标准模型预测的6是一致的。6+ 0.7− 0.6 pb。给出了不同运动变量的箱中的微分截面。微分事件产额作为领先的Z玻色子的横向动量的函数被用来设置在ZZ生产异常中性三重规范玻色子耦合的限制。
A measurement of the ZZ production cross section in the ℓ− ℓ+ ℓ′− ℓ′+ andchannels (ℓ= e, μ) in proton-proton collisions atTeV at the Large Hadron Collider at CERN, using data corresponding to an integrated luminosity of 20.3 fb− 1 collected by the ATLAS experiment in 2012 is presented. The fiducial cross sections for ZZ→ ℓ− ℓ+ ℓ′− ℓ′+ andare measured in selected phase-space regions. The total cross section for ZZ events produced with both Z bosons in the mass range 66 to 116 GeV is measured from the combination of the two channels to be 7.3±0.4 (stat)±0.3 (syst)− 0.2− 0.1 (lumi) pb, which is consistent with the Standard Model prediction of 6. 6+ 0.7− 0.6 pb. The differential cross sections in bins of various kinematic variables are presented. The differential event yield as a function of the transverse momentum of the leading Z boson is used to set limits on anomalous neutral triple gauge boson couplings in ZZ production.