Search for a massive scalar resonance decaying to a light scalar and a Higgs boson in the four b quarks final state with boosted topology
Search for a massive scalar resonance decaying to a light scalar and a Higgs boson in the four b quarks final state with boosted topology
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DOI：
10.1016/j.physletb.2022.137392
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发表时间：
2022-04
影响因子：
4.4
通讯作者：
Cms Collaboration
中科院分区：
文献类型：
--
作者：
Cms Collaboration
我们通过共振过程寻找新的大质量标量粒子X和Y，其中H是标准模型希格斯玻色子，X→Y H→b b‘b b’。使用的是欧洲核子研究中心大型强子对撞质子-质子碰撞的数据，这些数据是在2016年至2018年以13TeV的质心能量收集的，对应的积分光度为138FB−1。搜索的质量范围为0.94TeV(X)和60-600GeV(Y)，其中Y和H都被重建为洛伦茨增强的单一大面积喷流。结果在次极小超对称标准模型的背景下解释，也在标准模型的两个附加单重态标量场的扩展中解释。根据X和Y质量的不同，产品横截面的95%置信度上限在0.1到150 fB之间变化，与以前搜索的结果相比有了显著的改善。
We search for new massive scalar particles X and Y through the resonant process X→ Y H→ b b¯ b b¯, where H is the standard model Higgs boson. Data from CERN LHC proton-proton collisions are used, collected at a centre-of-mass energy of 13 TeV in 2016–2018 and corresponding to an integrated luminosity of 138 fb− 1. The search is performed in mass ranges of 0.9–4 TeV for X and 60–600 GeV for Y, where both Y and H are reconstructed as Lorentz-boosted single large-area jets. The results are interpreted in the context of the next-to-minimal supersymmetric standard model and also in an extension of the standard model with two additional singlet scalar fields. The 95% confidence level upper limits for the production cross section vary between 0.1 and 150 fb depending on the X and Y masses, and represent a significant improvement over results from previous searches.