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arXiv 0712.0095hep-phhep-ex
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弯曲额外维中规范-希格斯统一的对撞机唯象

Collider Phenomenology of Gauge-Higgs Unification Scenarios in Warped Extra Dimensions

Marcela Carena, Anibal D. Medina, Boris Panes, Nausheen R. Shah, Carlos E. M. Wagner

摘要:

在基于体$SO(5)\times U(1)_X$规范对称性的RS规范-Higgs统一方案中,计算了胶子、$W$、$Z$规范玻色子以及Higgs的零模和第一激发态与第三代夸克的零模和第一激发态的耦合.利用与电弱精确检验和辐射电弱对称破缺相一致的参数空间,我们数值研究了这些耦合对我们模型参数的依赖性。此外,在强调存在的顶夸克的轻激发态,它强烈耦合到卡鲁扎克莱因规范玻色子,相关的对撞机现象进行了分析。特别是,我们集中在可能的检测的第一个激发态的顶部,$t^1$,这往往有一个更高的质量比通过定期QCD生产过程。我们强调,这些粒子的检测仍然是可能的,由于增加的对生产的$t^1$诱导的第一激发态的胶子,$G^1$。

英文摘要:

We compute the couplings of the zero modes and first excited states of gluons, $W$'s, $Z$ gauge bosons, as well as the Higgs, to the zero modes and first excited states of the third generation quarks, in an RS Gauge-Higgs unification scenario based on a bulk $SO(5)\times U(1)_X$ gauge symmetry, with gauge and fermion fields propagating in the bulk. Using the parameter space consistent with electroweak precision tests and radiative electroweak symmetry breaking, we study numerically the dependence of these couplings on the parameters of our model. Furthermore, after emphasizing the presence of light excited states of the top quark, which couple strongly to the Kaluza Klein gauge bosons, the associated collider phenomenology is analyzed. In particular, we concentrate on the possible detection of the first excited state of the top, $t^1$, which tends to have a higher mass than the ones accessible via regular QCD production processes. We stress that the detection of these particles is still possible due to an increase in the pair production of $t^1$ induced by the first excited state of the gluon, $G^1$.

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