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Ultraperipheral collisions and low-x physics
by Tuomas Lappi
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|Authors (as registered SciPost users):
|SciPost Physics Proceedings
|28th Annual Workshop on Deep-Inelastic Scattering (DIS) and Related Subjects (DIS2021)
Ultraperipheral collisions at the LHC and RHIC offer the highest currently available energy for photon-nucleon and photon-nucleus collisions. Thus they are a valuable tool for studying the gluonic structure of hadrons and nuclei at small x. We discuss recent theoretical work towards understanding such exclusive processes at NLO accuracy in QCD perturbation theory. These theoretical advances are also immediately relevant for understanding the physics of deep inelastic scattering at small x. We also discuss experimental results in ultraperipheral collisions, most prominently for exclusive vector meson production.
Published as SciPost Phys. Proc. 8, 003 (2022)
Submission & Refereeing History
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Reports on this Submission
- Cite as: Anonymous, Report on arXiv:scipost_202107_00034v1, delivered 2022-03-14, doi: 10.21468/SciPost.Report.4679
Recent theoretical work towards understanding gluonic structure of hadrons and nuclei at small x is discussed. The discussion is very much related to EIC and photon nucleon interactions. It has been shown that the LHC and RHIC have a growing and versatile program of photon-mediated ultraperipheral collisions that addresses the same physics topics as EIC and thus complementary measurement cam be made prior to EIC vis UPC in vector meson channels. This is very well written and carry strong direction to UPC measurements for small x physics. I would recommend it for publication.