LHC单参数模型的超引力和超弦特征
Supergravity and Superstring Signatures of the One-Parameter Model at LHC
摘要：
许多弦结构具有经典的无标度结构，导致超对称破缺软项的单参数模型（OPM）。作为mSUGRA的高度受限子集，OPM具有预测潜力。相反，如果在LHC观测到的超伴子光谱是OPM参数空间的一个子集，那么这可能为高能下的基本理论提供线索。我们研究了一个通用的单参数模型，考虑到最近的实验约束允许的超对称参数空间。我们发现，在严格的模的情况下，有没有区域的参数空间，可以满足所有的约束。然而，对于玻色子场景，存在参数空间的小区域，其中所有约束可以被满足，并且可以针对该小区域生成观测到的暗物质密度。我们还调查了可能在大型强子对撞机（LHC）上观察到的可能的签名。最后，我们比较碰撞签名的OPM的那些从一个模型与非通用的软条款，特别是那些相交的D6膜模型。我们发现，在LHC上区分这些不同的场景是可能的。
英文摘要：
Many string constructions have a classical no-scale structure, resulting in a one-parameter model (OPM) for the supersymmetry breaking soft terms. As a highly constrained subset of mSUGRA, the OPM has the potential to be predictive. Conversely, if the observed superpartner spectrum at LHC is a subset of the OPM parameter space, then this may provide a clue to the underlying theory at high energies. We investigate the allowed supersymmetry parameter space for a generic one-parameter model taking into account the most recent experimental constraints. We find that in the strict moduli scenario, there are no regions of the parameter space which may satisfy all constraints. However, for the dilaton scenario, there are small regions of the parameter space where all constraints may be satisfied and for which the observed dark matter density may be generated. We also survey the possible signatures which may be observable at the Large Hadron Collider (LHC). Finally, we compare collider signatures of OPM to those from a model with non-universal soft terms, in particular those of an intersecting D6-brane model. We find that it may be possible to distinguish between these diverse scenarios at LHC.
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