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arXiv 0909.2213hep-phhep-ex
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大型强子对撞机上的非粒子自相互作用

Unparticle Self-Interactions at the Large Hadron Collider

Johannes Bergstrom, Tommy Ohlsson

摘要:

本文研究了大型强子对撞机(LHC)中非粒子自相互作用的影响。特别讨论了由共形对称性决定的三点关联函数,并研究了它与四粒子末态过程的关系。这些过程可以作为寻找非粒子物理学的有利途径,以及寻找与标准模型足够弱的耦合,甚至是唯一的途径。我们发现更新的上限上的截面为非粒子介导的4伽马最终状态在LHC和新的上限为相应的2伽马2L和4L最终状态。对于非粒子扇区的标度尺寸的大值,所获得的允许截面的大小是非常大的,但是它们随着该参数的减小而减小。此外,我们提出了相关的分布为不同的最终状态,使可能的识别unparticle标度尺寸,如果有大量的事件,这样的最终状态在大型强子对撞机。

英文摘要:

We investigate the effect of unparticle self-interactions at the Large Hadron Collider (LHC). Especially, we discuss the three-point correlation function, which is determined by conformal symmetry up to a constant, and study its relation to processes with four-particle final states. These processes could be used as a favorable way to look for unparticle physics, and for weak enough couplings to the Standard Model, even the only way. We find updated upper bounds on the cross sections for unparticle-mediated 4 gamma final states at the LHC and novel upper bounds for the corresponding 2 gamma 2l and 4l final states. The size of the allowed cross sections obtained are comparably large for large values of the scaling dimension of the unparticle sector, but they decrease with decreasing values of this parameter. In addition, we present relevant distributions for the different final states, enabling the possible identification of the unparticle scaling dimension if there was to be a large number of events of such final states at the LHC.

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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