论文标题
在proton-proton碰撞中，搜索Higgs Boson和Z Boson通过其衰减中的质量Quark-Antiquark对搜索，$ \ sqrt {s} $ = 13 TEV
Search for Higgs boson and observation of Z boson through their decay into a charm quark-antiquark pair in boosted topologies in proton-proton collisions at $\sqrt{s}$ = 13 TeV
论文作者
论文摘要
搜索具有大于450 GEV的横向动量生产的标准模型（SM）Higgs玻色子（H），并呈现为charm Quark-antiquark（$ \ Mathrm {C \ bar {c}} $）对。搜索是使用$ \ sqrt {s} $ = 13 TEV在LHC处收集的Proton-Proton碰撞数据进行的，对应于138 fb $^{ - 1} $的集成光度。 Boosted H $ \ to $ \ $ \ MATHRM {C \ bar {C}} $衰减产品被重建为单个大型拉迪乌斯喷气机，并使用深神经网络魅力标记技术鉴定。该方法是通过测量z $ \至$ $ \ mathrm {c \ bar {c}} $衰减过程来验证的，该过程与Jets在高$ P_ \ Mathrm {t} $首次与1.00 $ _ { - 0.14} $ 0.17} $（pm pm pm pm pm y Mathrm {t} $相关时可以观察到。 0.06（STAT），定义为观察到的过程速率与标准模型期望的比率。观察到的（预期的）上限$σ$（h）$ \ mathcal {b} $（h $ \ to $ \ $ \ mathrm {c \ bar {c}} $）设置为47（39）乘以95％置信度的SM预测。
A search for the standard model (SM) Higgs boson (H) produced with transverse momentum greater than 450 GeV and decaying to a charm quark-antiquark ($\mathrm{c\bar{c}}$) pair is presented. The search is performed using proton-proton collision data collected at $\sqrt{s}$ = 13 TeV by the CMS experiment at the LHC, corresponding to an integrated luminosity of 138 fb$^{-1}$. Boosted H $\to$ $\mathrm{c\bar{c}}$ decay products are reconstructed as a single large-radius jet and identified using a deep neural network charm tagging technique. The method is validated by measuring the Z $\to$ $\mathrm{c\bar{c}}$ decay process, which is observed in association with jets at high $p_\mathrm{T}$ for the first time with a signal strength of 1.00 $_{-0.14}^{+0.17}$ (syst) $\pm$ 0.08 (theo) $\pm$ 0.06 (stat), defined as the ratio of the observed process rate to the standard model expectation. The observed (expected) upper limit on $σ$(H) $\mathcal{B}$(H $\to$ $\mathrm{c\bar{c}}$) is set at 47 (39) times the SM prediction at 95% confidence level.
