MFV reductions of MSSM parameter space

MFV reductions of MSSM parameter space
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MSSM 参数空间的 MFV 缩减

DOI:
10.1007/jhep02(2015)073
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发表时间:
2015
影响因子:
5.4
通讯作者:
AbdusSalam S
AbdusSalam S
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
AbdusSalam S

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最小超对称标准模型(MSSM)的100多个自由参数使得它在计算上很难与数据进行系统的比较,这激发了对特定参数简化的研究,如cMSSM和pMSSM。在这里,我们而是研究减少参数空间隐含的使用最小味违反(MFV)组织的R-奇偶守恒MSSM,以期系统地建立在口味违反物理学的约束。在这个框架内,参数的空间通过以卡比博角的幂扩展软超对称性破缺项来减少,导致24-,30-或42-参数框架(我们分别称之为MSSM-24,MSSM-30和MSSM-42),这取决于扩展中保持的顺序。我们提供了一个贝叶斯全局拟合MSSM-30参数集的数据,以表明这是可管理的,与当前的工具。我们比较的MFV减少19参数pMSSM的选择,并表明pMSSM不包含作为一个子集。MSSM-30分析倾向于相对较轻的TeV尺度的赝标量希格斯玻色子和具有多TeV粒子的tan β 10。
The 100+ free parameters of the minimal supersymmetric standard model (MSSM) make it computationally difficult to compare systematically with data, motivating the study of specific parameter reductions such as the cMSSM and pMSSM. Here we instead study the reductions of parameter space implied by using minimal flavour violation (MFV) to organise the R-parity conserving MSSM, with a view towards systematically building in constraints on flavour-violating physics. Within this framework the space of parameters is reduced by expanding soft supersymmetry-breaking terms in powers of the Cabibbo angle, leading to a 24-, 30-or 42-parameter framework (which we call MSSM-24, MSSM-30, and MSSM-42 respectively), depending on the order kept in the expansion. We provide a Bayesian global fit to data of the MSSM-30 parameter set to show that this is manageable with current tools. We compare the MFV reductions to the 19-parameter pMSSM choice and show that the pMSSM is not contained as a subset. The MSSM-30 analysis favours a relatively lighter TeV-scale pseudoscalar Higgs boson and tan β∼ 10 with multi-TeV sparticles.
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发表时间: 1994
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DOI: --
发表时间: 2011
期刊:
影响因子: --
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Shehu S. Abdussalam
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