arXiv 1507.067062015-07-24hep-phhep-ex

将LHC搜索的排除可能性应用于扩展希格斯扇形区

Applying Exclusion Likelihoods from LHC Searches to Extended Higgs Sectors

Philip Bechtle, Sven Heinemeyer, Oscar Stal, Tim Stefaniak, Georg Weiglein

备注：: 24 pages, 6 figures; The code can be downloaded from http://higgsbounds.hepforge.org
DOI：: 10.1140/epjc/s10052-015-3650-z

摘要：

大型强子对撞机寻找衰变为τ轻子对的非标准希格斯玻色子，是对超越标准模型（BSM）的物理学（如超对称性（SUSY））的敏感实验探测。最近，从这些搜索中获得的限制已经由CMS合作以几乎与模型无关的方式提出-作为一个狭窄的共振模型-基于完整的8 TeV数据集。除了发布95%的C. L.排除限制，窄共振模型的全似然信息已经发布。这提供了可以并入全局BSM拟合的有价值的信息。我们提出了一个简单的算法，映射到窄共振模型的任意模型与多个中性希格斯玻色子玻色子和导出相应的值的排除可能性从CMS搜索。这一程序已在公共计算机代码HiggsBounds（4.2.0版及更高版本）中实现。我们验证了我们的实施交叉检查对官方CMS排除轮廓在三个希格斯基准的情况下，在最小超对称标准模型（MSSM），并找到非常好的协议。超越验证，我们讨论的组合约束的τ-τ搜索和速率测量的SM类希格斯粒子在125 GeV在最近提出的MSSM基准的情况下，最轻的希格斯玻色子获得SM类耦合独立的较重的希格斯态的去耦。附录中给出了如何访问HiggsBounds中的可能性信息的技术细节。该程序可在www.example.com上获得。

英文摘要：

LHC searches for non-standard Higgs bosons decaying into tau lepton pairs constitute a sensitive experimental probe for physics beyond the Standard Model (BSM), such as Supersymmetry (SUSY). Recently, the limits obtained from these searches have been presented by the CMS collaboration in a nearly model-independent fashion - as a narrow resonance model - based on the full 8 TeV dataset. In addition to publishing a 95% C.L. exclusion limit, the full likelihood information for the narrow resonance model has been released. This provides valuable information that can be incorporated into global BSM fits. We present a simple algorithm that maps an arbitrary model with multiple neutral Higgs bosons onto the narrow resonance model and derives the corresponding value for the exclusion likelihood from the CMS search. This procedure has been implemented into the public computer code HiggsBounds (version 4.2.0 and higher). We validate our implementation by cross-checking against the official CMS exclusion contours in three Higgs benchmark scenarios in the Minimal Supersymmetric Standard Model (MSSM), and find very good agreement. Going beyond validation, we discuss the combined constraints of the tau tau search and the rate measurements of the SM-like Higgs at 125 GeV in a recently proposed MSSM benchmark scenario, where the lightest Higgs boson obtains SM-like couplings independently of the decoupling of the heavier Higgs states. Technical details for how to access the likelihood information within HiggsBounds are given in the appendix. The program is available at http://higgsbounds.hepforge.org.

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