Same-sign top pair production in an extra-dimension model of flavor at the CERN Large Hadron Collider
Same-sign top pair production in an extra-dimension model of flavor at the CERN Large Hadron Collider
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欧洲核子研究中心大型强子对撞机的超维味道模型中的同符号顶对产生
DOI：
10.1103/physrevd.78.096005
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发表时间：
2008-08
影响因子：
5
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中科院分区：
文献类型：
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作者：
研究了在LHC有味破坏的Randall-Sundrum模型中胶子的第一次Kaluza-Klein(KK)激发所介导的同号顶对的产生，其中费米子和KK规范玻色子之间的非万能耦合将导致可观察到的树级气味变化中性电流效应.我们发现，在我们的情况下产生的同号顶夸克具有高能量和高横向动量的性质，即使当KK胶子的质量达到3TeV时，也能在同号双轻子通道中产生可观察到的信号。我们进一步研究了大型强子对撞机探测气味破坏参数的可能性，发现大型强子对撞机可以探测到0.06的值。
We study the same-sign top pair production mediated by the first Kaluza-Klein (KK) excitation of the gluon in the Randall-Sundrum model with flavor violation at the LHC, in which the nonuniversal couplings between fermions and KK gauge bosons will lead to observable tree-level flavor changing neutral current effects. We find that the same-sign top quarks produced in our case have property of high energy and high transverse momentum, and lead to an observable signal in the same-sign dilepton channel even when the mass of the KK gluon reach up to 3 TeV. We further investigate the potential of the LHC to probe the flavor violating parameters and find that the LHC can probe their values down to 0.06.