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arXiv 0901.1145hep-ph
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在LHC上研究Gaugino质量统一

Studying Gaugino Mass Unification at the LHC

Baris Altunkaynak, Phillip Grajek, Michael Holmes, Gordon Kane, Brent D. Nelson

摘要:

我们开始了一个系统的研究如何高根质量统一可以探测在欧洲核子研究中心大型强子对撞机(LHC)在一个准模型独立的方式。作为第一步,在这个方向上,我们把注意力集中在理论上动机良好的海市蜃楼模式的高吉诺群众,一个单参数家庭的模型,其中普遍(高尺度)高吉诺群众是一个限制的情况。我们改进了以前的方法,定义一个解析表达式的度量签名空间,并使用它来研究一个参数的偏差,从普适性的高吉诺部门,随机化在其他软超临界参数。我们提出了三个观测量的合奏针对的物理学的高吉诺部门,允许确定这一非普适性参数,而无需重建个人的质量本征值或软超光速打破高吉诺质量本身。在这个受控的环境中,我们发现,大约80%的超对称参数空间将产生一个模型,我们的方法将检测非普适性的高吉诺质量部门在10%的水平与积分亮度的顺序为10个逆femptobarns。我们讨论的策略,改进的方法,并在处理LHC的实际实验情况下,增加更多的现实主义。

英文摘要:

We begin a systematic study of how gaugino mass unification can be probed at the CERN Large Hadron Collider (LHC) in a quasi-model independent manner. As a first step in that direction we focus our attention on the theoretically well-motivated mirage pattern of gaugino masses, a one-parameter family of models of which universal (high scale) gaugino masses are a limiting case. We improve on previous methods to define an analytic expression for the metric on signature space and use it to study one-parameter deviations from universality in the gaugino sector, randomizing over other soft supersymmetry-breaking parameters. We put forward three ensembles of observables targeted at the physics of the gaugino sector, allowing for a determination of this non-universality parameter without reconstructing individual mass eigenvalues or the soft supersymmetry-breaking gaugino masses themselves. In this controlled environment we find that approximately 80% of the supersymmetric parameter space would give rise to a model for which our method will detect non-universality in the gaugino mass sector at the 10% level with an integrated luminosity of order 10 inverse femptobarns. We discuss strategies for improving the method and for adding more realism in dealing with the actual experimental circumstances of the LHC.

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