| Article | |
| Report number | arXiv:1012.0161 |
| Title | Testing factorization in pA collisions at the LHC |
| Author(s) | Quiroga-Arias, Paloma (Santiago de Compostela U. ; Santiago de Compostela U., IGFAE) ; Milhano, Jose Guilherme (Lisbon, CENTRA ; Lisbon, IST ; CERN) ; Wiedemann, Urs Achim (CERN) |
| Publication | 2011 |
| Imprint | 02 Dec 2010 |
| Number of pages | 4 |
| Note | Comments: 4 pages, 4 figures, to appear in the proceedings of the 4th International Conference on Hard and Electromagnetic Probes of High-Energy Nuclear Collisions 4 pages, 4 figures, to appear in the proceedings of the 4th International Conference on Hard and Electromagnetic Probes of High-Energy Nuclear Collisions |
| In: | Nucl. Phys. A 855 (2011) pp.498-501 |
| In: | 4th International Conference on Hard and Electromagnetic Probes of High Energy Nuclear Collisions, Eilat, Israel, 10 - 15 Oct 2010, pp.498-501 |
| DOI | 10.1016/j.nuclphysa.2011.02.115 |
| Subject category | Particle Physics - Phenomenology |
| Abstract | Global perturbative QCD analyses, based on large data sets from e-p and hadron collider experiments, provide tight constraints on the parton distribution function (PDF) in the proton. The extension of these analyses to nuclear parton distributions (nPDF) has attracted much interest in recent years. nPDFs are needed as benchmarks for the characterization of hot QCD matter in nucleus-nucleus collisions, and attract further interest since they may show novel signatures of non-linear density-dependent QCD evolution. However, it is not known from first principles whether the factorization of long-range phenomena into process-independent parton distribution, which underlies global PDF extractions for the proton, extends to nuclear effects. As a consequence, assessing the reliability of nPDFs for benchmark calculations goes beyond testing the numerical accuracy of their extraction and requires phenomenological tests of the factorization assumption. Here we argue that a proton-nucleus collision programme at the LHC, including a rapidity scan, would provide a set of measurements allowing for unprecedented tests of the factorization assumption underlying global nPDF fits. |
| Copyright/License | Elsevier B.V. |
Corresponding record in: Inspire
Record created 2010-12-02, last modified 2024-05-08
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