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Title: Forward Physics in Proton-Nucleus and Nucleus-Nucleus Collisions

Abstract

We present an universal treatment for a substantial nuclear suppression representing a common feature of all known reactions on nuclear targets (forward production of high-p{sub T} hadrons, production of direct photons, the Drell-Yan process, heavy flavor production, etc.). Such a suppression at large Feynman x{sub F}, corresponding to region of minimal light-cone momentum fraction variable x{sub 2} in nuclei, is tempting to interpret as a manifestation of coherence or the Color Glass Condensate. We demonstrate, however, that it is actually a simple consequence of energy conservation and takes place even at low energies, where no effects of coherence are possible. We analyze this common suppression mechanism for several processes performing model predictions in the light-cone dipole approach. Our calculations agree with the data.

Authors:
 [1];  [2]
  1. Institute of Experimental Physics SAS, Watsonova 47, 04001 Kosice (Slovakia)
  2. Departamento de Fisica y Centro de Estudios Subatomicos, Universidad Tecnica Federico Santa Maria, Casilla 110-V, Valparaiso (Chile)
Publication Date:
OSTI Identifier:
21251451
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 1056; Journal Issue: 1; Conference: 6. international conference on perspectives in hadronic physics, Trieste (Italy), 12-16 May 2008; Other Information: DOI: 10.1063/1.3013043; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; DRELL MODEL; ELECTROMAGNETIC FORM FACTORS; ENERGY CONSERVATION; FLAVOR MODEL; HEAVY ION REACTIONS; LIGHT CONE; PARTICLE PRODUCTION; PHOTONS; PROTONS; QUANTUM CHROMODYNAMICS

Citation Formats

Nemchik, J, Czech Technical University, FNSPE, Brehova 7, 11519 Praque, and Potashnikova, I K. Forward Physics in Proton-Nucleus and Nucleus-Nucleus Collisions. United States: N. p., 2008. Web. doi:10.1063/1.3013043.
Nemchik, J, Czech Technical University, FNSPE, Brehova 7, 11519 Praque, & Potashnikova, I K. Forward Physics in Proton-Nucleus and Nucleus-Nucleus Collisions. United States. https://doi.org/10.1063/1.3013043
Nemchik, J, Czech Technical University, FNSPE, Brehova 7, 11519 Praque, and Potashnikova, I K. 2008. "Forward Physics in Proton-Nucleus and Nucleus-Nucleus Collisions". United States. https://doi.org/10.1063/1.3013043.
@article{osti_21251451,
title = {Forward Physics in Proton-Nucleus and Nucleus-Nucleus Collisions},
author = {Nemchik, J and Czech Technical University, FNSPE, Brehova 7, 11519 Praque and Potashnikova, I K},
abstractNote = {We present an universal treatment for a substantial nuclear suppression representing a common feature of all known reactions on nuclear targets (forward production of high-p{sub T} hadrons, production of direct photons, the Drell-Yan process, heavy flavor production, etc.). Such a suppression at large Feynman x{sub F}, corresponding to region of minimal light-cone momentum fraction variable x{sub 2} in nuclei, is tempting to interpret as a manifestation of coherence or the Color Glass Condensate. We demonstrate, however, that it is actually a simple consequence of energy conservation and takes place even at low energies, where no effects of coherence are possible. We analyze this common suppression mechanism for several processes performing model predictions in the light-cone dipole approach. Our calculations agree with the data.},
doi = {10.1063/1.3013043},
url = {https://www.osti.gov/biblio/21251451}, journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 1056,
place = {United States},
year = {Mon Oct 13 00:00:00 EDT 2008},
month = {Mon Oct 13 00:00:00 EDT 2008}
}