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arXiv 1609.01401hep-phhep-lat
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与原型BSM模型相比,在LHC范围内的大尺度分离和共振

Large scale separation and resonances within LHC range from a prototype BSM model

Anna Hasenfratz, Claudio Rebbi, Oliver Witzel

摘要:

许多描述标准模型之外的物理学的理论依赖于尺度的大分离。如果系统在紫外线下是共形的,但在红外线下是手性断裂的,那么在具有质量分裂味道的模型中会出现大尺度分离。由于共形不动点,这些系统表现出超标度和高度约束的共振谱。我们推导了超标度关系,并研究了这样一个系统的实现与四轻和八重口味。我们的数值模拟证实,轻-轻和重-重共振质量都表现出超标度,并且只依赖于轻和重味质量的比例。重-重光谱与QCD有质的不同,它展示的夸克偶素质量与组成夸克的质量不成比例。这些共振只比光-光共振重几倍,这将使它们在LHC的范围内。

英文摘要:

Many theories describing physics beyond the Standard Model rely on a large separation of scales. Large scale separation arises in models with mass-split flavors if the system is conformal in the ultraviolet but chirally broken in the infrared. Because of the conformal fixed point, these systems exhibit hyperscaling and a highly constrained resonance spectrum. We derive hyperscaling relations and investigate the realization of one such system with four light and eight heavy flavors. Our numerical simulations confirm that both light-light and heavy-heavy resonance masses show hyperscaling and depend only on the ratio of the light and heavy flavor masses. The heavy-heavy spectrum is qualitatively different from QCD and exhibits quarkonia with masses not proportional to the constituent quark mass. These resonances are only a few times heavier than the light-light ones, which would put them within reach of 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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