论文标题
HL-LHC的Higgsino Decay增强了Higgs对生产
Enhanced Higgs pair production from higgsino decay at the HL-LHC
论文作者
论文摘要
多部门Susy Breaking的场景预测，伪金的伪基，这些伪金斯汀斯没有被Gravitino吸收，其质量可以低至$ {{\ cal o}（0.1）} $ GEV。由于伪Goldstinos的相互作用并不像Gravitino那样弱，因此生产的Higgsino可以腐烂到伪Goldstino加上Higgs Boson Insider在LHC处的检测器，因此Higgsino Pair Pair的产生可以导致Higgs对的信号以及Higgs对的信号以及缺失的能量。对于需要相当轻的Higgsinos的天然Susy的情况，此类事件可能会超过SM所预测的Higgs对事件，并可以在HL-LHC上访问（14 TEV的亮度为3〜 $ \ rm {ab}^{ - 1} $）。在这项工作中，我们检查了此类希格斯对的可观察性，以及在HL-LHC上产生的光希格西诺斯的衰减中缺少能量。考虑到Higgs-Pair衰减的三个频道（$ BBWW^*$，$BBγγ$，$ BBBB $），我们的信号和背景的详细蒙特卡洛模拟表明，最佳频道是$ BBBB+\ textrm {e \！\！\！\！\！\！\！\！\！\！\！\！\！\！\！\！ \！\ slash} _t $，对于当前实验允许的光higgsino的统计意义可以达到$2σ$级别。这是SM Higgs对的结果，大约为$1.8σ$。
The scenario of multi-sector SUSY breaking predicts pseudo-goldstinos which are not absorbed by the gravitino and their mass can be as low as ${{\cal O} (0.1)}$ GeV. Since the interactions of pseudo-goldstinos are not so weak as gravitino, a produced higgsino can decay to a pseudo-goldstino plus a Higgs boson insider the detector at the LHC, and thus the higgsino pair production can lead to the signal of Higgs pair plus missing energy. For the scenario of natural SUSY which requires rather light higgsinos, such events may sizably outnumber the Higgs pair events predicted by the SM and be accessible at the HL-LHC (14 TeV with a luminosity of 3~$\rm{ab}^{-1}$). In this work we examine the observability of such Higgs pair plus missing energy from the decay of light higgsinos produced at the HL-LHC. Considering three channels of the Higgs-pair decay ($bbWW^*$, $bbγγ$, $bbbb$), our detailed Monte Carlo simulations for the signal and backgrounds show that the best channel is $bbbb+\textrm{E\!\!\!\! \!\slash}_T$, whose statistical significance can reach $2σ$ level for a light higgsino allowed by current experiments. This is over the SM Higgs pair result which is about $1.8σ$.
