AI 中文总结
该研究利用ALICE实验测量pp碰撞中重味介子的产生与关联，对比pQCD计算及唯象模型，检验pQCD并约束重夸克产生、强子化及多部分子相互作用动力学。
AI 中文摘要
重夸克（粲夸克与底夸克）主要由硬部分子散射产生，这使得质子-质子（pp）碰撞中它们的产生截面可通过微扰量子色动力学（pQCD）计算，从而为pQCD提供严格检验。此外，单次碰撞中两个粲强子的伴随产生是多部分子相互作用动力学的灵敏探针，可区分单部分子散射（SPS）与双部分子散射（DPS）过程。本文报道了瞬发D介子产生的初步测量结果，以及在中间快度区、横动量pT低至1 GeV/c的B⁰介子产生截面的最终结果；还通过与LHCb实验在前向快度区的测量结果计算比值，研究了B介子产生的快度依赖关系。同时，本文还给出了√s=13.6 TeV的pp碰撞中D⁰-J/ψ对的伴随产生结果，其中D⁰介子在中间快度区重建，J/ψ候选粒子在 forward 快度区测量。这些测量结果与pQCD计算及唯象模型进行了对比，为重夸克产生、强子化及多部分子相互作用动力学提供了关键约束。
英文摘要
Heavy quarks (charm and beauty) are predominantly produced in hard partonic scatterings, making their cross sections in proton--proton (pp) collisions calculable in perturbative quantum chromodynamics (pQCD) and thus providing stringent tests of pQCD. Furthermore, the associated production of two charm hadrons in a single collision offers a sensitive probe of multiparton interaction dynamics, distinguishing between single parton scattering (SPS) and double parton scattering (DPS) processes. In this contribution, preliminary measurements of prompt D-meson production are reported, together with the final results of the $\rm B^{0}$-meson production cross section down to $p_{\rm T}$ = 1 GeV/$c$ at midrapidity. The rapidity dependence of B-meson production is investigated by computing the ratio with respect to LHCb measurements at forward rapidity. The associated production of $\rm D^{0}$--$\mathrm{J}/ψ$ pairs in pp collisions at $\sqrt{s} = 13.6$ TeV is presented as well, where $\rm D^{0}$ mesons are reconstructed at midrapidity, while $\mathrm{J}/ψ$ candidates are measured at forward rapidity. These measurements are compared with pQCD calculations and phenomenological models, providing crucial constraints on heavy-quark production, hadronisation, and multiparton interaction dynamics.
Comments4 pages, 5 Figures, conference proceeding to be published in Journal of Subatomic Particles and Cosmology
