论文标题
通过顶部夸克融合，衰减到底部的夸克和机器学习技术，探索$ \ mathrm {z}^{\ prime} $，具有非宇宙效率耦合
Probing a $\mathrm{Z}^{\prime}$ with non-universal fermion couplings through top quark fusion, decays to bottom quarks, and machine learning techniques
论文作者
论文摘要
沉重的质量共振的产生在理论上和实验中广泛研究。粒子物理学的标准模型（SM）的几个扩展自然会引起新的共振，并带有中性电荷，通常称为$ \ textrm {z}^{\ prime} $ boson。该假设粒子的性质，质量，耦合和相关的量子数尚未确定。我们介绍了一项可行性研究，该研究是在LHC的$ \ textrm {z}^{\ prime} $ boson的生产的可行性研究，并考虑了proton-proton碰撞，在$ \ sqrt {s} = 13 $ $ \ $ \ mathrm {tev} $ {tev} $ {tev} $ {tev} $和14 tev。我们在两个简化的现象学框架下工作，其中$ \ mathrm {z}^{\ prime} $ smoses和与SM粒子的耦合是免费参数，并考虑$ \ textrm {z}^{\ prime} $ decay的最终状态。使用机器学习技术进行分析，以最大程度地提高实验灵敏度。提出的搜索方法可以是发现的关键模式，互补与文献中考虑的现有搜索策略，并将LHC敏感性扩展到$ \ Mathrm {z}^{\ prime} $参数空间。
The production of heavy mass resonances has been widely studied theoretically and experimentally. Several extensions of the standard model (SM) of particle physics, naturally give rise to a new resonance, with neutral electric charge, commonly referred to as the $\textrm{Z}^{\prime}$ boson. The nature, mass, couplings, and associated quantum numbers of this hypothetical particle are yet to be determined. We present a feasibility study on the production of a vector like $\textrm{Z}^{\prime}$ boson at the LHC, with preferential couplings to third generation fermions, considering proton-proton collisions at $\sqrt{s} = 13$ $\mathrm{TeV}$ and 14 TeV. We work under two simplified phenomenological frameworks where the $\mathrm{Z}^{\prime}$ masses and couplings to the SM particles are free parameters, and consider final states of the $\textrm{Z}^{\prime}$ decaying to a pair of $\mathrm{b}$ quarks. The analysis is performed using machine learning techniques in order to maximize the experimental sensitivity. The proposed search methodology can be a key mode for discovery, complementary to the existing search strategies considered in literature, and extends the LHC sensitivity to the $\mathrm{Z}^{\prime}$ parameter space.
