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arXiv 1906.01402hep-ph
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具有交叉对称性和标度特性的pp和pp的前向散射振幅

Forward scattering amplitudes of pp and pp with crossing symmetry and scaling properties

Anderson Kendi Kohara

摘要:

我们分析了pp和pp弹性散射振幅使用几个欧洲核子研究中心和费米实验室的数据,重温安德烈马丁提出的想法的基础上解析延拓和交叉对称。引入一种新的标度函数形式以及$t=0$的COMPETE的分析形式,我们表明数据与从$\sqrt{s}= $ 23 GeV到13 TeV(对于$-t\leq 0.2$ GeV)的散射振幅的交叉对称性一致。$^{2}$。解析性和交叉对称性自动满足色散关系及其导数。实部再现了马丁预测的零点,这对于精确描述高能前向范围内的微分截面至关重要。由于该模型的自由参数是能量无关的,振幅的分析形式允许预测中间和更高的能量。

英文摘要:

We analyse the pp and pp elastic scattering amplitudes using the data of several CERN and FERMILAB experiments, revisiting ideas proposed by André Martin based on analytic continuation and crossing symmetry. Introducing a new form for the scaling function together with the analytical forms from COMPETE at $t=0$ we show that the data are consistent with the crossing symmetry of the scattering amplitudes from $\sqrt{s}= $ 23 GeV to 13 TeV for $-t\leq 0.2$ GeV$^{2}$. Analiticity and crossing symmetry automatically satisfy the dispersion relations and their derivatives. The real part reproduces the zero predicted by Martin, which is crucial to describe with precision the differential cross section in the forward range at high energies. Since the free parameters of the model are energy independent, the analytical form of the amplitude allows predictions for intermediate and higher energies.

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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