论文标题
半约束NMSSM中的一种新场景
A Novel Scenario in the Semi-constrained NMSSM
论文作者
论文摘要
在这项工作中，我们开发了一种新型的有效扫描方法，结合了启发式搜索（HS）和生成对抗网络（GAN），HS可以将边缘样品转移到完美的样品中，并且GAN可以在短时间内将大量推荐样品从噪声中产生。通过这种有效的方法，我们在半限制的最小超对称标准模型（SCNMSSSM）或具有非普遍Higgs质量的NMSSM中找到了一种新方案。在这种情况下，（i）可以满足穆恩g-2和正确的遗物密度，以及据我们所知，在这项工作之前尚未在SCNMSSM中实现的高质量。 （ii）具有正确的遗物密度，最轻的中性诺斯是单杆占主导地位的，并且可以像0-12 GEV一样轻。 （iii）未来的直接检测Xenonnt和Lux-Zeplin（LZ-7 2T）可以对这种情况产生强大的限制。 （iv）当前对Higgs的间接约束无形衰减$ H_2 \ to \tildeχ^0_1 \tildeχ^0_1 $很弱，但直接检测到未来HL-LHC的HIGGS隐形衰减可能覆盖了样本的一半，并且CEPC可能覆盖大部分。 （v）希格斯奇异衰减的分支比率$ h_2 \ to h_1h_1，a_1a_1 $的分支比率超过20％，而它们对无形衰变$ h_2 \to4χ_1^0 $的贡献很小。
In this work, we develop a novel efficient scan method, combining the Heuristically Search (HS) and the Generative Adversarial Network (GAN), where the HS can shift marginal samples to perfect samples, and the GAN can generate a huge amount of recommended samples from noise in a short time. With this efficient method, we find a new scenario in the semi-constrained Next-to Minimal Supersymmetric Standard Model (scNMSSM), or NMSSM with non-universal Higgs masses. In this scenario, (i) Both muon g-2 and right relic density can be satisfied, along with the high mass bound of gluino, etc. As far as we know, that had not been realized in the scNMSSM before this work. (ii) With the right relic density, the lightest neutralinos are singlino-dominated, and can be as light as 0-12 GeV. (iii) The future direct detections XENONnT and LUX-ZEPLIN (LZ-7 2T) can give strong constraints to this scenario. (iv) The current indirect constraints to Higgs invisible decay $h_2\to \tildeχ^0_1 \tildeχ^0_1$ are weak, but the direct detection of Higgs invisible decay at the future HL-LHC may cover half of the samples, and that of the CEPC may cover most. (v) The branching ratio of Higgs exotic decay $h_2\to h_1h_1, a_1a_1$ can be over 20 percent, while their contributions to the invisible decay $h_2\to4χ_1^0$ are very small.
