Evidence for a long-range component in the pion emission source in Au plus Au collisions at root s(NN)=200 GeV
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Belikov, Sergey
Ogilvie, Craig
Bhagavatula, S.
Constantin, Paul
Grau, Nathan
Hill, John
Lajoie, John
Lebedev, Alexandre
Ogilvie, Craig
Rak, Jan
Rosati, Marzia
Wohn, F.
et al.
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Abstract
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.
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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.