Oliveira-Martin-Ryskin组合BFKL + DGLAP演化方程的胶子分布
Gluon distributions from Oliveira-Martin-Ryskin combined BFKL+DGLAP evolution equations
摘要：
Kwiecinski，Martin，Stasto [13]主张将DGvector项纳入未积分胶子密度的BFKL演化中。Oliveira，Martin，Ryskin [6]采用张开角θ = k/xp作为演化变量重新表述了该方程。它导致一个θ积分胶子密度的描述。本文是对这两种类似的组合BFKL+DGLAP公式的数值研究。这证明了新方法的可行性。比较了[13]和[6]中提出的减去BFKL和DGKL共同贡献的不同方法。数值试验表明，θ变量是这类方程更自然的演化变量。
英文摘要：
Kwiecinski, Martin, Stasto [13] argue for inclusion of DGLAP terms into BFKL evolution of unintegrated gluon density. The equation was reformulated by Oliveira, Martin, Ryskin [6] employing the opening angle θ = k/xp as the evolution variable. It leads to a description of a θ-integrated gluon density. This paper is a numerical study of these two similar combined BFKL+DGLAP formulations. It is a demonstration of feasibility of the new approach. The different ways of subtracting the contribution common for BFKL and DGLAP proposed in [13] and [6] are compared. The numerical tests confirm that the θ variable is a more natural evolution variable for this kind of equation.
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。
