论文标题
electroweak $ t \ bar t $ hadrodufuct在powheg的nlo qcd的重物$ z'$和$ w'$ boson的存在下
Electroweak $t \bar t$ hadroproduction in the presence of heavy $Z'$ and $W'$ bosons at NLO QCD in POWHEG
论文作者
论文摘要
我们以前对Electroweak Top-Quark对载生生生的计算在标准模型的扩展中进行了扩展和改进，并具有额外的重中性和带电的Spin-1共振。特别是，我们允许使用Flavour-non-Diagonal $ Z'$耦合，并考虑到SM及以后的非共鸣生产，包括$ t $ channel $ w $和$ w'u'$ bosons的捐款。所有振幅均使用Recola2软件包生成。与以前的工作一样，我们包括NLO QCD校正，并始终如一地与Parton阵雨相匹配，并通过Powheg方法充分考虑了SM和新物理幅度之间的干扰效应。我们考虑了连续的标准模型，TopColour模型以及第三个家庭超收费模型，该模型具有非Flavour-Diagonal $ Z'$耦合，该模型最近提议在$ b $衰减中解释异常。我们提出了$ t \ bar t $ cross截面的数值结果，在强大的质量能量中，质量为100 tev。
We extend and improve upon our previous calculation of electroweak top-quark pair hadroproduction in extensions of the Standard Model with extra heavy neutral and charged spin-1 resonances. In particular, we allow for flavour-non-diagonal $Z'$ couplings and take into account non-resonant production in the SM and beyond including the contributions with $t$-channel $W$ and $W'$ bosons. All amplitudes are generated using the Recola2 package. As in our previous work, we include NLO QCD corrections and consistently match to parton showers with the POWHEG method fully taking into account the interference effects between SM and new physics amplitudes. We consider the Sequential Standard Model, the Topcolour model, as well as the Third Family Hypercharge Model featuring non-flavour-diagonal $Z'$ couplings which has been proposed recently to explain the anomalies in $B$ decays. We present numerical results for $t \bar t$ cross sections at hadron colliders with a centre-of-mass energy up to 100 TeV.
