Evidence for a long-range component in the pion emission source in Au+Au collisions at sqrt sNN=200 GeV

Evidence for a long-range component in the pion emission source in Au+Au collisions at sqrt sNN=200 GeV

Emission source functions are extracted from correlation functions constructed from charged pions produced at midrapidity in Au+Au collisions at sqrt[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. T...

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Veröffentlicht in:Physical review letters 2007-03, Vol.98 (13), p.132301-132301
Hauptverfasser: Adler, S S, Afanasiev, S, Aidala, C, Ajitanand, N N, Akiba, Y, Alexander, J, Amirikas, R, Aphecetche, L, Aronson, S H, Averbeck, R, Awes, T C, Azmoun, R, Babintsev, V, Baldisseri, A, Barish, K N, Barnes, P D, Bassalleck, B, Bathe, S, Batsouli, S, Baublis, V, Bazilevsky, A, Belikov, S, Berdnikov, Y, Bhagavatula, S, Boissevain, J G, Borel, H, Borenstein, S, Brooks, M L, Brown, D S, Bruner, N, Bucher, D, Buesching, H, Bumazhnov, V, Bunce, G, Burward-Hoy, J M, Butsyk, S, Camard, X, Chai, J-S, Chand, P, Chang, W C, Chernichenko, S, Chi, C Y, Chiba, J, Chiu, M, Choi, I J, Choi, J, Choudhury, R K, Chujo, T, Chung, P, Cianciolo, V, Cobigo, Y, Cole, B A, Constantin, P, Csanád, M, Csörgo, T, d'Enterria, D, David, G, Delagrange, H, Denisov, A, Deshpande, A, Desmond, E J, Devismes, A, Dietzsch, O, Drapier, O, Drees, A, du Rietz, R, Durum, A, Dutta, D, Efremenko, Y V, Chenawi, K El, Enokizono, A, En'yo, H, Esumi, S, Ewell, L, Fields, D E, Fleuret, F, Fokin, S L, Fox, B D, Fraenkel, Z, Frantz, J E, Franz, A, Frawley, A D, Fung, S-Y, Garpman, S, Ghosh, T K, Glenn, A, Gogiberidze, G, Gonin, M, Gosset, J, Goto, Y, Granier de Cassagnac, R, Grau, N, Greene, S V, Perdekamp, M Grosse, Guryn, W, Gustafsson, H-A, Hachiya, T, Haggerty, J S, Hamagaki, H, Hansen, A G
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Sprache:eng
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Zusammenfassung:Emission source functions are extracted from correlation functions constructed from charged pions produced at midrapidity in Au+Au collisions at sqrt[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.
ISSN:0031-9007