Evidence for a long-range component in the pion emission source in Au plus Au collisions at root s(NN)=200 GeV
Emission source functions are extracted from correlation functions constructed from charged pions produced at midrapidity in Au+Au collisions at s(NN)=200 GeV. The source parameters extracted from these functions at low k(T) give first indications of a long tail for the pion emission source. The source extension cannot be explained solely by simple kinematic considerations. The possible role of a halo of secondary pions from resonance emissions is explored.
This article is published as Adler, S. S., S. Afanasiev, C. Aidala, N. N. Ajitanand, Y. Akiba, J. Alexander, R. Amirikas et al. "Evidence for a long-range component in the pion emission source in Au+ Au collisions at s N N= 200 GeV." Physical review letters 98, no. 13 (2007): 132301. DOI:10.1103/PhysRevLett.98.132301. Posted with permission.