Towards precise predictions for Higgs-boson production in the MSSM
Towards precise predictions for Higgs-boson production in the MSSM
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DOI：
10.1007/jhep06(2014)167
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发表时间：
2014-06-27
影响因子：
5.4
通讯作者：
Vicini, A.
中科院分区：
文献类型：
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作者：
Bagnaschi, E.;Harlander, R. V.;Vicini, A.
我们研究了在MSSM中通过胶子融合和底夸克湮灭产生标量和赝标量希格斯玻色子。依靠在公共代码SusHi中实现的NNLO-QCD计算，我们提供了与LHC搜索兼容的六个基准场景中的希格斯粒子产生截面的精确预测。我们还提供了一个详细的讨论，在我们的计算中的理论不确定性的来源。我们研究的依赖性的截面上的重整化和因式分解尺度，希格斯玻色子底耦合的精确定义和PDF的选择，以及相关的不确定性，我们不完整的知识的超对称贡献，通过NNLO。特别是，一个潜在的大的不确定性来源于未计算的高阶QCD修正底夸克胶子融合的贡献。
We study the production of scalar and pseudoscalar Higgs bosons via gluon fusion and bottom-quark annihilation in the MSSM. Relying on the NNLO-QCD calculation implemented in the public code SusHi, we provide precise predictions for the Higgs-production cross section in six benchmark scenarios compatible with the LHC searches. We also provide a detailed discussion of the sources of theoretical uncertainty in our calculation. We examine the dependence of the cross section on the renormalization and factorization scales, on the precise definition of the Higgs-bottom coupling and on the choice of PDFs, as well as the uncertainties associated to our incomplete knowledge of the SUSY contributions through NNLO. In particular, a potentially large uncertainty originates from uncomputed higher-order QCD corrections to the bottom-quark contributions to gluon fusion.