arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2304.07481hep-ph
收藏

基于部分子Regge化方法的改进色蒸发模型中$J/ψ$与$Z(W)$的伴随产生

Associated production of $J/ψ$ plus $Z(W)$ in the improved color evaporation model using the parton Reggeization approach

Alexey Chernyshev, Vladimir Saleev

AI总结:

本研究在改进色蒸发模型中结合部分子Regge化方法的高能因子化方案,研究$J/ψ$与$Z(W)$的伴随产生,用KaTie完成数值计算,验证现有数据并给出更高能区的相关产生截面预言。

摘要:

本文采用部分子Regge化方法框架下构建的高能因子化方案,在改进的色蒸发模型中研究 prompt $J/ψ$ 介子与$Z(W)$玻色子的伴随产生。该方法基于用于未积分部分子分布函数的修正Kimber-Martin-Ryskin-Watt模型,以及L.N. Lipatov提出的Regge化胶子与夸克的有效场论。我们利用此前为描述LHC能量下单、双prompt $J/ψ$ 产生而得到的一组模型参数,预测了通过单部分子散射和双部分子散射机制发生的$J/ψ$与$Z(W)$强子伴随产生的截面。数值计算通过蒙特卡洛事件产生器KaTie实现。我们将计算结果与质心系能量$\boldsymbol{\textit{s}} = 7$和$8\rm\textbf{ TeV}$下的实验数据进行了对比,并对$\boldsymbol{\textit{s}} = 13\rm\textbf{ TeV}$下的$J/ψ$加$Z(W)$伴随产生,以及$\boldsymbol{\textit{s}} = 8$和$13\rm\textbf{ TeV}$下的$Υ$加$Z/W$伴随产生给出了理论预言。

英文摘要:

In the article, we study the associated production of prompt $J/ψ$ mesons and $Z(W)$ bosons in the improved color evaporation model using the high-energy factorization as it is formulated in the parton Reggeization approach. The last one is based on the modified Kimber-Martin-Ryskin-Watt model for unintegrated parton distribution functions and the effective field theory of Reggezied gluons and quarks, suggested by L.N.~Lipatov. We predict cross section for associated $J/ψ$ and $Z ( W)$ hadroproduction via the single and double parton scattering mechanisms using the set of model parameters that have been obtained early for the description of single and double prompt $J/ψ$ production at the LHC energies. The numerical calculations are realized using the Monte-Carlo event generator KaTie. The calculation results are compared with the data at the energies $\sqrt{s} = 7 \mbox{ and } 8$ TeV and we make predictions for the energy $\sqrt{s} = 13$ TeV for $J/ψ$ plus $Z(W)$ and $Υ$ plus $Z/W$ at the $\sqrt{s} = 8 \mbox{ and } 13$ TeV associated productions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑