Complete electroweak corrections to diphoton production via gluon fusion at the LHC
Abstract
We present a complete calculation of the next-to-leading order (NLO) electroweak corrections to the loop-induced gluon-fusion process gg→γγ at the LHC, including the full third-generation quark and the Higgs boson contributions for the first time. To efficiently evaluate the large number of multi-scale two-loop Feynman integrals, we employ a numerical approach based on differential equations with an optimized basis. Our results show that, although the NLO electroweak corrections to the phase-space-integrated cross section remain at the sub-percent level, they can reach about −10% in the tails of the diphoton invariant-mass and photon transverse-momentum distributions. Moreover, the diphoton invariant-mass distribution exhibits rich and intriguing structures, including a dip-bump structure in the Higgs-threshold region and a mild enhancement near the top-quark pair threshold. These features make the electroweak corrections indispensable for future precision studies of diphoton production at the LHC.
Related
- Towards the two-loop electroweak corrections to the Drell-Yan process: the complete fermionic contributions
- Complete two-loop unrenormalized electroweak corrections to e + e − → H Z
- Analytic next-to-leading order electroweak corrections to Higgs boson pair production at high energies
- Higgs Boson Pair Production via Gluon Fusion: Higher-Order Corrections and Theoretical Uncertainties
- Analytic two-loop electroweak corrections at high energies
BibTeX
@misc{chen2026complete,
title = {{Complete electroweak corrections to diphoton production via gluon fusion at the LHC}},
author = {Long-Bin Chen and Zi-Qiang Chen and Hai Tao Li and Hua-Sheng Shao},
howpublished = {HAL},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.18828},
eprint = {2609.18828},
archivePrefix = {arXiv},
url = {https://hal.science/hal-05763247v1},
}
RIS
TY - UNPB
TI - Complete electroweak corrections to diphoton production via gluon fusion at the LHC
AU - Long-Bin Chen
AU - Zi-Qiang Chen
AU - Hai Tao Li
AU - Hua-Sheng Shao
PY - 2026
DA - 2026/09/16
PB - HAL
DO - 10.48550/arxiv.2609.18828
UR - https://hal.science/hal-05763247v1
AB - We present a complete calculation of the next-to-leading order (NLO) electroweak corrections to the loop-induced gluon-fusion process gg→γγ at the LHC, including the full third-generation quark and the Higgs boson contributions for the first time. To efficiently evaluate the large number of multi-scale two-loop Feynman integrals, we employ a numerical approach based on differential equations with an optimized basis. Our results show that, although the NLO electroweak corrections to the phase-space-integrated cross section remain at the sub-percent level, they can reach about −10% in the tails of the diphoton invariant-mass and photon transverse-momentum distributions. Moreover, the diphoton invariant-mass distribution exhibits rich and intriguing structures, including a dip-bump structure in the Higgs-threshold region and a mild enhancement near the top-quark pair threshold. These features make the electroweak corrections indispensable for future precision studies of diphoton production at the LHC.
ER -