Recent developments on parton-to-photon fragmentation functions
DOI:
https://doi.org/10.23727/CERN-Proceedings-2018-001.211Keywords:
Photon production, Photon fragmentation functions, Jets, perturbative QCD.Abstract
We report on some recent developments concerning parton-to-photon fragmentation functions. We briefly summarize the
main theoretical concepts on which the currently available extractions of these fragmentation functions rely: evolution
and the vector meson dominance model. We present comparisons of the available sets. We argue that the single-inclusive
photon production process $pp\to\gamma X$ possesses only little sensitivity to the fragmentation
contribution. Instead, the semi-inclusive process $pp\to(\text{jet}\,\gamma)X$, for which the photon is observed inside a fully
reconstructed jet and is part of the jet, is shown to offer much potential for providing valuable new information.
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Published
2018-12-20
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Section
Physics with final-state photons at hadron colliders
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