Two-gluon exchange contribution to elastic γγ→γγ scattering and production of two-photons in ultraperipheral ultrarelativistic heavy ion and proton–proton collisions
We discuss the two-gluon exchange contribution (formally three-loops) to elastic photon–photon scattering in the high-energy approximation. The elastic γγ→γγ amplitude is given in the impact-factor representation for all helicity configurations and finite quark masses. We discuss the importance of i...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2016-10-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269316304865 |