Searches for new neutral gauge boson at the Tevatron and LHC in the left-right twin Higgs model
Searches for new neutral gauge boson at the Tevatron and LHC in the left-right twin Higgs model
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DOI：
10.1007/s11433-012-4691-z
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发表时间：
2012-03
期刊：
影响因子：
--
通讯作者：
Yao-Bei Liu;Wenqing Zhang;Leibing Yan
中科院分区：
文献类型：
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作者：
Yao-Bei Liu;Wenqing Zhang;Leibing Yan
在左右孪生Higgs（LRTH）模型的框架下，研究了在Tevatron和LHC上探测新Z ′玻色子的可能性.首先，利用D0和CDF II探测器收集的碰撞数据，我们发现LRTHZ′玻色子在质量低于940 GeV时被排除。然后通过对事例数、双μ子不变质量微分截面、横动量分布和前后电荷不对称性等分布的分析，寻找Z ′玻色子在LHC上的特征。我们做我们的计算的两个典型值的LHC质心能量（7和14 TeV）。数值结果表明，通过对某些观测量进行适当的截断，得到的双μ子不变质量和末态粒子T分布可以揭示LRTH模型中重中性规范玻色子Z ′贡献的存在.
In the framework of the left-right twin Higgs (LRTH) model, we study the possibilities to detect the newZ′ boson at the Tevatron and LHC. First, usingcollision data collected by the D0 and CDF II detectors, we find that the LRTHZ′ boson is excluded with masses below 940 GeV. Then we search for signatures of theZ′ boson at the LHC from the analysis of some distributions for, such as the number of events, the differential cross section of the dimuon invariant mass, the distributions of the transverse momentum and the forward-backward charge asymmetry. We do our calculation for two typical values of the LHC center of mass energy (7 and 14 TeV). The numerical results show that, by applying convenient cuts on some of the observables, the dimuon invariant mass and final particlepTdistributions can reveal the presence of the heavy neutral gauge bosonZ′ contribution in the LRTH model.