arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1505.02426hep-phhep-ex
收藏

核子结构与高能相互作用

Nucleon structure and the high energy interactions

O. V. Selyugin

摘要:

在核子广义结构表象的基础上,提出了一个新的高能强子相互作用模型。在描述质子和中子电磁形状因子实验数据的基础上,通过对不同的部分子分布函数(PDF)的比较分析,得到了广义部分子分布(GPD)的新的t依赖关系.考虑到强子的GPD矩的不同,用少量的自由拟合高能参数,得到了从$\sqrt{s} = 9.8$ GeV到$ 8 \ $ TeV的质子-质子和质子-反质子弹性散射的全部实验数据的定量描述,包括库仑范围和直到$-t=15$ GeV $^2$的大动量转移.强子弹性散射振幅的实部仅由满足色散关系的复$s$确定。得到了硬Pomeron的贡献可以忽略不计和最大Odderon的非小贡献的存在。自旋翻转振幅的非染色形式也被检查。分析了玻恩项和归一化散射振幅的结构。结果表明,在LHC能量下,弹性散射振幅的黑盘极限没有达到。预测LHC的能量。

英文摘要:

On the basis of the representation of the generalized structure of nucleons a new model of the hadron interaction at high energies is presented. The new t-dependence of the generalized parton distributions (GPDs) is obtained from the comparative analysis of different sets of the parton distribution functions (PDFs), based on the description of the whole sets of experimental data of electromagnetic form factors of the proton and neutron. Taking into account the different moments of GPDs of the hadron the quantitative descriptions of all existing experimental data of the proton-proton and proton-antiproton elastic scattering from $\sqrt{s} = 9.8$ GeV to $ 8 \ $ TeV, including the Coulomb range and large momentum transfers up to $-t=15$ GeV$^2$, are obtained with a few free fitting high energy parameters. The real part of the hadronic elastic scattering amplitude is determined only through complex $s$ satisfying the dispersion relations. The negligible contributions of the hard Pomeron and the presence of the non-small contributions of the maximal Odderon are obtained. The non-dying form of the spin-flip amplitude is examined as well. The structure of the Born term and unitarized scattering amplitude are analysed. It is shown that the Black Disk Limit for the elastic scatering amplitude is not reached at LHC energies. Predictions for LHC energies are made.

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。

↑