Title

Growth of Long Range Forward-Backward Multiplicity Correlations with Centrality in Au plus Au Collisions at root s(NN)=200 GeV

Authors

David Grosnick, Valparaiso University
Donald D. Koetke, Valparaiso University
Robert Manweiler, Valparaiso University
Shirvel Stanislaus, Valparaiso University
J. C. Webb, Valparaiso University
STAR Collaboration

Document Type

Article

Publication Date

10-2009

Abstract

Forward-backward multiplicity correlation strengths have been measured with the STAR detector for Au + Au and p + p collisions at root s(NN) = 200 GeV. Strong short- and long-range correlations (LRC) are seen in central Au + Au collisions. The magnitude of these correlations decrease with decreasing centrality until only short-range correlations are observed in peripheral Au + Au collisions. Both the dual parton model (DPM) and the color glass condensate (CGC) predict the existence of the long-range correlations. In the DPM, the fluctuation in the number of elementary (parton) inelastic collisions produces the LRC. In the CGC, longitudinal color flux tubes generate the LRC. The data are in qualitative agreement with the predictions of the DPM and indicate the presence of multiple parton interactions.

Recommended Citation

Grosnick, David; Koetke, Donald D.; Manweiler, Robert; Stanislaus, Shirvel; Webb, J. C.; and STAR Collaboration, "Growth of Long Range Forward-Backward Multiplicity Correlations with Centrality in Au plus Au Collisions at root s(NN)=200 GeV" (2009). Physics and Astronomy Faculty Publications. 69.
https://scholar.valpo.edu/phys_astro_fac_pub/69