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arXiv 2206.09413hep-phhep-ex
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粲$B$ -介子包容发射的QCD高能谱

The high-energy spectrum of QCD from inclusive emissions of charmed $B$-mesons

Francesco Giovanni Celiberto

摘要:

通过研究LHC能量和运动学组态下粲$B$ -介子($B_c$或$B_c^*$态)伴随非粲$b$ -强子或轻味喷流发射的包容性强子产生,研究了强相互作用的高能行为.通过使用混合高能和共线因式分解,其中基于共线部分子密度和碎裂函数的标准固定阶描述通过能量谱的Balitsky-Fadin-Kuraev-Lipatov(BFKL)重新表示得到增强,我们对JETHAD多模块工作包计算的快速度和方位角的分布微分进行了完整的次领先阶分析。观测到的大的横动量证明了使用非相对论性QCD次主导阶碎裂函数来描述重味介子产生机制的合理性。我们得出的结论是,这一过程的研究可以包括在即将进行的分析(高光度)LHC作为一种工具,以访问QCD动力学在高能量和探索不同的再确认方法之间可能的共同点。

英文摘要:

We investigate the high-energy behavior of strong interactions through a study on the inclusive hadroproduction of charmed $B$-mesons ($B_c$ or $B_c^*$ states) accompanied by non-charmed $b$-hadron or light-flavored jet emissions at LHC energies and kinematic configurations. By making use of the hybrid high-energy and collinear factorization, where the standard fixed-order description based on collinear parton densities and fragmentation functions is enhanced via the Balitsky-Fadin-Kuraev-Lipatov (BFKL) resummation of energy logarithms, we perform a full next-to-leading order analysis of distributions differential in rapidities and azimuthal angles calculated by the hands of the JETHAD multi-modular working package. The large observed transverse momenta justify the use of non-relativistic QCD next-to-leading order fragmentation functions to describe the heavy-flavored meson production mechanism. We come out with the conclusion that the study of this process can be included in forthcoming analyses at the (high-luminosity) LHC as a tool to access the QCD dynamics at high energies and to explore possible common ground between different resummation approaches.

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。

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