We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Two-loop radiative corrections to e<sup>+</sup>e<sup>−</sup> → γγ<sup>∗</sup> cross section.
- Authors
Fadin, V. S.; Lee, R. N.
- Abstract
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 α2. 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.
- Subjects
RADIATIVE corrections; DIFFERENTIAL cross sections; VACUUM polarization; MUONS; PHOTON emission; POSITRONIUM; PHOTON pairs
- Publication
Journal of High Energy Physics, 2023, Vol 2023, Issue 11, p1
- ISSN
1126-6708
- Publication type
Article
- DOI
10.1007/JHEP11(2023)148