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arXiv 0903.3609hep-phhep-exhep-th
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F理论在LHC的足迹

The Footprint of F-theory at the LHC

Jonathan J. Heckman, Gordon L. Kane, Jing Shao, Cumrun Vafa

摘要:

最近的工作表明,F-理论的紧致化提供了一个潜在的有吸引力的唯象场景。F理论大统一理论的低能特征包括远离最小规范调解方案的变形和高信使尺度。该理论的软标量质量都被弦效应转移,这种效应在低能量下仍然存在。这种效应的范围可以从0 GeV到~ 500 GeV。在本文中,我们研究潜在的对撞机签名的F-理论的大统一体,特别侧重于如何区分这类模型与其他理论的MSSM频谱。为了实现这一点,我们已经适应了一般的足迹方法最近开发的区分广泛的类弦真空的特定情况下的F-理论大统一理论。我们表明,只有5 fb^(-1)的模拟LHC的数据,它是可能区分许多mSUGRA模型和低信使标度规范调解模型从F理论大统一理论。此外,我们发现在5 fb^(-1)处,远离最小规范介导的弦形变产生了可观测的结果,这些结果也可以在~ +/-80 GeV量级上被探测到。通过这种方式,可以区分具有大的和小的弦状变形的模型。在50 fb^(-1)时,这提高到~ +/- 10 GeV。

英文摘要:

Recent work has shown that compactifications of F-theory provide a potentially attractive phenomenological scenario. The low energy characteristics of F-theory GUTs consist of a deformation away from a minimal gauge mediation scenario with a high messenger scale. The soft scalar masses of the theory are all shifted by a stringy effect which survives to low energies. This effect can range from 0 GeV up to ~ 500 GeV. In this paper we study potential collider signatures of F-theory GUTs, focussing in particular on ways to distinguish this class of models from other theories with an MSSM spectrum. To accomplish this, we have adapted the general footprint method developed recently for distinguishing broad classes of string vacua to the specific case of F-theory GUTs. We show that with only 5 fb^(-1) of simulated LHC data, it is possible to distinguish many mSUGRA models and low messenger scale gauge mediation models from F-theory GUTs. Moreover, we find that at 5 fb^(-1), the stringy deformation away from minimal gauge mediation produces observable consequences which can also be detected to a level of order ~ +/- 80 GeV. In this way, it is possible to distinguish between models with a large and small stringy deformation. At 50 fb^(-1), this improves to ~ +/- 10 GeV.

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