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arXiv 0811.3849hep-ph
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质子-质子和质子-反质子弹性散射的斜率分析

Slope analysis for elastic proton-proton and proton-antiproton scattering

V. A. Okorokov

摘要:

本文主要在动量转移的中间区,利用已有的实验数据,研究了质子-质子和质子-反质子弹性散射的衍射斜率参数。能量依赖的弹性衍射斜率近似由各种解析函数在一个模型无关的方式。扩展后的标准对数近似可以在定性水平上合理地描述所有可用能量范围内的实验斜率。各种拟合函数在低能和甚高能域都互不相同。对NICA、RHIC和LHC能区的质子-质子弹性散射,以及FAIR能区的质子-反质子弹性反应,在动量转移的中间平方上采用各种近似函数,得到了衍射斜率参数的预测。在较宽的动量转移范围内,研究了质子-反质子和质子-质子散射的核斜率的差异。

英文摘要:

The diffraction slope parameter is investigated for elastic proton-proton and proton-antiproton scattering based on the all available experimental data at intermediate square of momentum transfer in the main. Energy dependence of the elastic diffraction slope is approximated by various analytic functions in a model-independent fashion. The expanded standard logarithmic approximations allow to describe experimental slopes in all available energy range at qualitative level reasonably. Various fitting functions differ from each other both in low energy and very high energy domains. Predictions for diffraction slope parameter are obtained for elastic proton-proton scattering at NICA, RHIC and LHC energies, for proton-antiproton elastic reaction in FAIR energy domain for various approximation functions at intermediate square of momentum transfer. Difference of nuclear slopes for proton-antiproton and proton-proton scattering is investigated in wide momentum transfer range also.

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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