Two-loop radiative corrections to e+e- → γγ∗ cross section

V. S. Fadin

doi:10.1007/JHEP11(2023)148

2023-11-22

V. S. Fadin *

Roman N. Lee

DOI：10.1007/JHEP11(2023)148

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摘要

En 中文

The increasing accuracy of current and planned experiments to measure the anomalous magnetic moment of the muon requires more precision and reliability of its theoretical calculation. For this purpose, we calculate the differential cross section for the process of annihilation of an electron-positron pair into two photons, one of which is virtual, accompanied by the emission of soft photons, taking into account radiative corrections of the order alpha(2). The results obtained can be used to improve the accuracy of calculating the contribution of the hadron vacuum polarization to the muon anomalous moment. It is shown that all logarithmically amplified two-loop corrections can be easily found using modern theorems of soft and collinear factorizations and available one-loop results.

Keyword:

Factorization

Renormalization Group

Higher Order Electroweak Calculations

期刊

Journal of High Energy Physics

IF:

5.5

论文数:

3.9W

被引数:

13.7W

机构

russian academy of sciences

学者数:

9.1W

论文数: 6.0W

被引数: 60

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