Adams, J;
Aggarwal, MM;
Ahammed, Z;
Amonett, J;
Anderson, BD;
Arkhipkin, D;
Averichev, GS;
... Zuo, JX; + view all
(2006)
Forward neutral pion production in p+p and d+Au collisions at root(S)(NN)=200 GeV.
PHYS REV LETT
, 97
(15)
, Article 152302. 10.1103/Phys/RevLett.97.152302.
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Abstract
Measurements of the production of forward pi(0) mesons from p+p and d+Au collisions at root s(NN) = 200 GeV are reported. The p+p yield generally agrees with next-to-leading order perturbative QCD calculations. The d+Au yield per binary collision is suppressed as eta increases, decreasing to similar to 30% of the p+p yield at <eta >=4.00, well below shadowing expectations. Exploratory measurements of azimuthal correlations of the forward pi(0) with charged hadrons at eta approximate to 0 show a recoil peak in p+p that is suppressed in d+Au at low pion energy. These observations are qualitatively consistent with a saturation picture of the low-x gluon structure of heavy nuclei.
| Type: | Article |
|---|---|
| Title: | Forward neutral pion production in p+p and d+Au collisions at root(S)(NN)=200 GeV |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/Phys/RevLett.97.152302 |
| Publisher version: | http://dx.doi.org/10.1103/Phys/RevLett.97.152302 |
| Language: | English |
| Additional information: | © 2006 The American Physical Society |
| Keywords: | PROTON-NUCLEUS COLLISIONS, COLOR GLASS CONDENSATE, GLUON DISTRIBUTION, EP SCATTERING, QCD, FRAGMENTATION, PP |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1324876 |
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