Article
Correlated production of p and p¯ source in Au + Au collisions at √sNN=200 GeV
Physics Letters B
Document Type
Article
Disciplines
Publication Version
Published Version
Publication Date
6-14-2007
DOI
10.1016/j.physletb.2007.04.029
Abstract
Correlations between p and p¯ at transverse momenta typical of enhanced baryon production in Au + Au collisions are reported. The PHENIX experiment has measured same and opposite sign baryon pairs in Au + Au collisions at √sNN=200 GeV. Correlated production of p and p¯ with the trigger particle from the range 2.5 < pT < 4.0 GeV/c and the associated particle with 1.8 < pT < 2.5 GeV/c is observed to be nearly independent of the centrality of the collisions. Same sign pairs show no correlation at any centrality. The conditional yield of mesons triggered by baryons (and anti-baryons) and mesons in the same pT range rises with increasing centrality, except for the most central collisions, where baryons show a significantly smaller number of associated mesons. These data are consistent with a picture in which hard scattered partons produce correlated p and p¯ in the pT region of the baryon excess.
Rights
This article is available under the terms of the Creative Commons Attribution License (CC BY). You may copy and distribute the article, create extracts, abstracts and new works from the article, alter and revise the article, text or data mine the article and otherwise reuse the article commercially (including reuse and/or resale of the article) without permission from Elsevier. You must give appropriate credit to the original work, together with a link to the formal publication through the relevant DOI and a link to the Creative Commons user license above. You must indicate if any changes are made but not in any way that suggests the licensor endorses you or your use of the work. Permission is not required for this type of reuse.
Creative Commons License
Creative Commons Attribution 4.0
Copyright Owner
Elsevier B.V.
Copyright Date
2007
Language
en
File Format
application/pdf
Citation Information
Andrew Adare, Sergey Belikov, Paul Constantin, Nathan C. Grau, et al.. "Correlated production of p and p¯ source in Au + Au collisions at √sNN=200 GeV" Physics Letters B Vol. 649 Iss. 5-6 (2007) p. 359 - 369 Available at: http://works.bepress.com/craig-ogilvie/239/
This article is from Physics Letters B 649 (2007): 359, doi:10.1016/j.physletb.2007.04.029. Posted with permission.