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arXiv 2403.03356hep-phnucl-exnucl-th
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夸克计数、Drell-Yan-West关系与π介子波函数

Quark Counting, Drell-Yan West, and the Pion Wave Function

Mary Alberg, Gerald A. Miller

AI总结:

本研究探究π介子夸克分布函数、光前波函数与弹性电荷形状因子的关联,通过模型与庞加莱协变性确定领头扭度波函数平方,计算发现Drell-Yan-West与夸克计数关系不成立,并提出二者间新关系。

摘要:

本文探究了π介子的夸克分布函数$q(x)$、其光前波函数与弹性电荷形状因子$F(Δ^2)$之间的关系。研究借助模型与庞加莱协变性,利用$q(x)$的实测结果,确定了特殊探测标度$ζ_H$下领头扭度π介子波函数的平方。随后利用该波函数计算形状因子,结果表明Drell-Yan-West关系与夸克计数关系均不成立。本文还提出了$q(x)$与$F(Δ^2)$之间的一种新关系。

英文摘要:

The relation between the pion's quark distribution function, $q(x)$, its light-front wave function, and the elastic charge form factor, $F(Δ^2)$ is explored. The square of the leading-twist pion wave function at a special probe scale, $ζ_H$, is determined using models and Poincare covariance from realistic results for $q(x)$. This wave function is then used to compute form factors with the result that the Drell-Yan-West and quark counting relationships are not satisfied. A new relationship between $q(x)$ and $F(Δ^2)$ is proposed.

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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