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Theoretical Particle Physics

Publications

Diphoton production in high-energy p+A collisions

Publicaciones

Diphoton production in high-energy p+A collisions

Research areas:

Física Teórica de Partículas

Year:

2014

Type of Publication:

Technical Report

Authors:

  • Amir Rezaeian
  • Alex Kovner

Journal:

Phys.Rev.

Volume:

D90

Pages:

17

Abstract:

We consider semi-inclusive diphoton+jet and inclusive diphoton production in high-energy proton-nucleus collisions, treating the target nucleus as a Color-Glass-Condensate and the projectile proton in the parton model. We obtain the prompt diphoton production cross-section in terms of fragmentation and direct contributions. The fragmentation part is given in terms of single-photon and double-photon fragmentation functions. We study prompt, direct and fragmentation diphoton correlations in p+p and p+A collisions at the LHC, and show that at low values of transverse momenta of the produced photon pair, these correlations are sensitive to saturation effects. We show that back-to-back (de)-correlations in prompt diphoton production are stronger in fragmentation part than in the direct one.

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