NNLO地区DVCS的矢量和轴矢量系数函数

Proceedings of Loops and Legs in Quantum Field Theory — PoS(LL2022) Pub Date : 2022-10-20 DOI:10.22323/1.416.0074

A. Manashov, V. Braun, S. Moch, J. Schoenleber

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引用次数: 1

摘要

我们计算了一个实光子和一个虚光子过程中(轴向)矢量风味非单重态贡献的双环系数函数。给出了动量分数空间中系数函数的解析表达式，并估计了它们对物理观测的影响。计算得到的NNLO校正似乎相当大，必须加以考虑。

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Vector and axial-vector coefficient functions for DVCS at NNLO

We calculate the two-loop coefficient functions for the (axial-) vector flavor-nonsinglet contributions in processes with one real and one virtual photon. We present the analytic expressions for the coefficient functions in momentum fraction space and estimate their effect on the physical observable. The calculated NNLO corrections appear to be rather large and have to be taken into account.

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Proceedings of Loops and Legs in Quantum Field Theory — PoS(LL2022)

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