论文标题
使用$ pp $ collisions在LHC Energies中使用模型模拟的BARYON数量传输的研究
Study of Baryon number transport using model simulations in $pp$ collisions at LHC Energies
论文作者
论文摘要
我们报告抗巴里昂与巴里昂比率的激发功能($ \叠加{p} /p $,{\ alam /\ lam}和{\ axi /\ lam}和{\ axi /\ xim})在$ pp $ collisions in {\ sqrts} = 0.9,2.76,2.76,2.76,7 tev tev tev tev ppmjii 〜ii, EPOS-LHC模型模拟。在{\ sqrts} = 13.6 tev上研究这些模型的预测。抗巴里昂与巴里昂的比率对于研究重子数量传输机制极为重要。这些比率有助于确定重子数字的载体和巴属结构信息的提取。即使所有模型在模型模拟和数据之间均显示出良好的一致性,但从DPMJET-III模型中提取的比率也仔细描述了所有能量的数据。观察到,这些比率融合到统一的各种模型预测。这种融合还表明,抗巴里族与巴里昂的比率遵循质量层次结构,使得包含更多奇怪的夸克({\ alam /\ lam}和{\ axi /\ xim})更快地unity的超元素({\ alam /\ lam}和{\ axi /\ xim})的统一方法比少于少于奇怪的quarks($ \ operline plline {p} /p} /pss /p}。还可以观察到,随着{\ sqrts}能量的增加,$ \叠加{b}/b $比率更快地接近统一。在较低的能量下,我们观察到过量的抗巴里蛋糕的产量过多。然而,由于巴里昂 - 抗巴逆元对产生,这种效应在较高的能量下消失,而baryon-anti-baryon产量变得相等。使用模型模拟,我们还计算了不对称的($ a \ equiv \ frac {n_ {p} -n _ {\ bar {p}}} n_ {p}+n _ {p}+n _ {\ bar {\ bar {p}}}} $)。对于所有能量,不对称性显示出趋势下降,能量从0.9 TEV增加到7 TEV。在{\ sqrts} = 13.6 TEV处的模型预测证实了这种不对称趋势,这将有助于在{\ sqrts} = 13.6 TEV的lhc数据run-iii数据的lhc数据中,对模型计算进行可能的约束。
We report on the excitation function of anti-baryon to baryon ratios ($\overline{p}/p$, {\alam /\lam} and {\axi / \xim}) in $pp$ collisions at {\sqrts} = 0.9, 2.76, 7 TeV from DPMJET-III, Pythia~8, EPOS~1.99, and EPOS-LHC model simulations. To study the predictions of these models at {\sqrts} = 13.6 TeV. The anti-baryon to baryon ratios are extremely important for the study of baryon number transport mechanisms. These ratios help determine the carriers of the baryon number and in the extraction of baryon structure information. Even though all models show a good agreement between model simulations and data, the ratios extracted from DPMJET-III model closely describes data at all energies. It is observed that these ratios converge to unity for various model predictions. This convergence also indicates that the anti-baryon to baryon ratios follow the mass hierarchy, such that the hyperon specie containing more strange quarks ({\alam /\lam} and {\axi / \xim}) approaches unity faster than specie containing fewer strange quarks ($\overline{p}/p$). It is also observed that the $\overline{B}/B$ ratio approaches unity more rapidly with the increase in {\sqrts} energy. At lower energies we observe an excess production of baryons over anti-baryons. However, this effect vanishes at higher energies due to the baryon-anti-baryon pair production and the baryon-anti-baryon yield becomes equal. Using model simulations, we additionally compute the asymmetry, ($A\equiv\frac{N_{p}-N_{\bar{p}}}N_{p}+N_{\bar{p}}}$) for protons. The asymmetry shows a decreasing trend with increase in energy from 0.9 to 7 TeV for all energies. This asymmetry trend is confirmed by model predictions at {\sqrts} = 13.6 TeV which will help to put possible constraints on model calculations at {\sqrts} = 13.6 TeV once the Run-III data for LHC becomes available.