发表机构
Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT)(能源、环境和技术研究中心)
机构由 AI 辅助整理,请以论文原文为准。AI 中文总结
本文提出一种基于次领头阶重加权的最优方法,利用标准模型样本高效搜索LHC高质双轻子产生中的新物理效应,适用于接触相互作用及新共振搜索。
AI 中文摘要
我们提出了一种用于研究LHC高质双轻子产生中新物理效应的最优方法。该方法依赖于一种在量子色动力学中精确到次领头阶的重加权程序。唯一计算上昂贵的输入是标准模型$\mathrm{pp\rightarrow V^{(*)}\rightarrow\ell^+\ell^-}$样本,其中$\mathrm{V=Z,\gamma^*}$,该样本以相同精度生成,并具有在高不变质量下相空间的充分统计覆盖。所提出的方法适用于任何$\mathrm{q\overline{q}\ell^+\ell^-}$接触相互作用场景,无论假定的底层结构和耦合如何。它也非常适合搜索s通道中产生的中等至大宽度新中性共振,因为对质量、耦合或宽度输入值的更改可以轻松地使用相同的初始生成样本实现。
英文摘要
We present an optimal method for studying new physics effects in high-mass dilepton production at the LHC. This method relies on a reweighting procedure that is precise to the next-to-leading order in quantum chromodynamics. The only computationally expensive input required is a standard model $\mathrm{pp\rightarrow V^{(*)}\rightarrow\ell^+\ell^-}$ sample, with $\mathrm{V=Z,γ^*}$, generated at the same level of precision and with sufficient statistical coverage of the phase space at high invariant masses. The proposed method is suitable for any $\mathrm{q\overline{q}\ell^+\ell^-}$ contact-interaction scenario, regardless of the assumed underlying structure and couplings. It is also ideal for searching for medium-to-large-width new neutral resonances produced in the s-channel, as changes to the input values for mass, coupling, or width can be easily implemented using the same initial generated samples.
Comments15 pages, 9 figures, 1 table