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arXiv 0801.0018hep-phhep-th
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光子对撞机上的非粒子物理学

Unparticle physics at the photon collider

Tatsuru Kikuchi, Nobuchika Okada, Michihisa Takeuchi

摘要:

最近,一个概念上的新物理超越了标准模型(SM),非粒子,已被提出,其中一个隐藏的共形扇区耦合到SM扇区通过高维运营商。在这个设置中,我们调查unparticle物理在光子对撞机,特别是,unparticle的影响,对伽玛过程。由于这一过程发生在SM中的循环水平,即使截止尺度非常高,非粒子效应也可能是显著的。事实上,我们发现非粒子效应导致了与SM结果相当大的偏差。非粒子d_U的标度维数反映了截面对末态光子不变质量的依赖关系,因此对这种依赖关系的精确测量可以揭示非粒子的标度维数。

英文摘要:

Recently, a conceptually new physics beyond the Standard Model (SM), unparticle, has been proposed, where a hidden conformal sector is coupled to the SM sector through higher dimensional operators. In this setup, we investigate unparticle physics at the photon collider, in particular, unparticle effects on the gamma gamma to gamma gamma process. Since this process occurs at loop level in the SM, the unparticle effects can be significant even if the cutoff scale is very high. In fact, we find that the unparticle effects cause sizable deviations from the SM results. The scaling dimension of the unparticle d_U reflects the dependence of the cross section on the final state photon invariant mass, so that precision measurements of this dependence may reveal the scaling dimension of the unparticle.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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