Prompt photon production in proton collisions as a probe of parton scattering in high energy limit

  title={Prompt photon production in proton collisions as a probe of parton scattering in high energy limit},
  author={Krzysztof Golec-Biernat and Leszek Motyka and Tomasz Stebel},
  journal={Physical Review D},
We study the prompt photon hadroproduction at the LHC with the ${k}_{T}$-factorization approach and the $q{g}^{*}\ensuremath{\rightarrow}q\ensuremath{\gamma}$ and ${g}^{*}{g}^{*}\ensuremath{\rightarrow}q\overline{q}\ensuremath{\gamma}$ partonic channels, using three unintegrated gluon distributions which depend on gluon transverse momentum. They represent three different theoretical schemes which are usually considered in the ${k}_{T}$-factorization approach, known under the acronyms: KMR, CCFM… 

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