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arXiv 0706.2677hep-phhep-ex
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非粒子:尺度和高能探针

Unparticles: Scales and High Energy Probes

Myron Bander, Jonathan L. Feng, Arvind Rajaraman, Yuri Shirman

摘要:

来自隐藏共形扇区的非粒子为物理学提供了超越标准模型的质的新的可能性。在极小模型的理论框架下,我们阐明了进入各种唯象分析的能量标度之间的关系。我们表明,这些关系总是抵消有效场论的直觉,更高的维度运营商更高度抑制,并要求一个显着的共形窗口放置强有力的约束可能的非粒子信号。考虑到这些因素,我们研究了一些最强大的和敏感的探针,并探讨了新的影响unparticles规范耦合演化和费米子生产在高能对撞机。这些约束既作为四费米子相互作用尺度上的边界,也作为极小模型的基本参数空间上的约束。

英文摘要:

Unparticles from hidden conformal sectors provide qualitatively new possibilities for physics beyond the standard model. In the theoretical framework of minimal models, we clarify the relation between energy scales entering various phenomenological analyses. We show that these relations always counteract the effective field theory intuition that higher dimension operators are more highly suppressed, and that the requirement of a significant conformal window places strong constraints on possible unparticle signals. With these considerations in mind, we examine some of the most robust and sensitive probes and explore novel effects of unparticles on gauge coupling evolution and fermion production at high energy colliders. These constraints are presented both as bounds on four-fermion interaction scales and as constraints on the fundamental parameter space of minimal models.

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