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arXiv 1006.3044hep-phhep-exhep-th
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Randall-Sundrum轨道褶皱中最低质量Regge回归的LHC现象学

LHC Phenomenology of Lowest Massive Regge Recurrences in the Randall-Sundrum Orbifold

Luis A. Anchordoqui, Haim Goldberg, Xing Huang, Tomasz R. Taylor

备注：
To be published in Physical Review D
发表信息：
Phys.Rev.D82:106010,2010
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摘要：

我们考虑字符串实现的兰德尔Sundrum有效理论的电弱对称性破缺，并探讨寻找最低质量的Regge激发的胶子和额外的（颜色单态）规范玻色子固有的D-膜结构。在这些弯曲的背景下，位于红外膜附近的标准模型场的高自旋Regge递归被向下弯曲到接近TeV的范围，因此可以在对撞机实验中产生。假设理论是弱耦合的，我们利用四个规范玻色子振幅附近的第一个Regge极点的评估，以确定大型强子对撞机的发现潜力。我们研究了中心快度区的包含双射流质谱|y_{jet}|对于双喷射流质量M \geq 2.5 TeV，< 1.0。我们发现，当积分亮度为100 fb^{-1}时，5σ发现范围可高达4.7 TeV。对pp \rightarrow直接γ+喷注中共振结构的观测可以为高达3.0 TeV的弦物理提供有趣的佐证。我们还研究了在小散射角和大散射角下双射流质谱的比值。我们发现，对于第一个fb^{-1}，这样的比率可以探测质量为\sim 2.5 TeV的最低Regge态。

英文摘要：

We consider string realizations of the Randall-Sundrum effective theory for electroweak symmetry breaking and explore the search for the lowest massive Regge excitation of the gluon and of the extra (color singlet) gauge boson inherent of D-brane constructions. In these curved backgrounds, the higher-spin Regge recurrences of Standard Model fields localized near the IR brane are warped down to close to the TeV range and hence can be produced at collider experiments. Assuming that the theory is weakly coupled, we make use of four gauge boson amplitudes evaluated near the first Regge pole to determine the discovery potential of LHC. We study the inclusive dijet mass spectrum in the central rapidity region |y_{jet}| < 1.0 for dijet masses M \geq 2.5 TeV. We find that with an integrated luminosity of 100 fb^{-1}, the 5σdiscovery reach can be as high as 4.7 TeV. Observations of resonant structures in pp \rightarrow direct γ+ jet can provide interesting corroboration for string physics up to 3.0 TeV. We also study the ratio of dijet mass spectra at small and large scattering angles. We show that with the first fb^{-1} such a ratio can probe lowest-lying Regge states for masses \sim 2.5 TeV.

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