Azimuthal-angle dependence of charged-pion-interferometry measurements with respect to second- and third-order event planes in Au+Au collisions at √[S(NN)]=200  GeV

Azimuthal-angle dependence of charged-pion-interferometry measurements with respect to second- and third-order event planes in Au+Au collisions at √[S(NN)]=200  GeV

Charged-pion-interferometry measurements were made with respect to the second- and third-order event plane for Au+Au collisions at sqrt[s_{NN}]=200  GeV. A strong azimuthal-angle dependence of the extracted Gaussian-source radii was observed with respect to both the second- and third-order event pla...

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Veröffentlicht in:Physical review letters 2014-06, Vol.112 (22), p.222301-222301
Hauptverfasser: Adare, A, Afanasiev, S, Aidala, C, Ajitanand, N N, Akiba, Y, Al-Bataineh, H, Alexander, J, Aoki, K, Aramaki, Y, Atomssa, E T, Averbeck, R, Awes, T C, Azmoun, B, Babintsev, V, Bai, M, Baksay, G, Baksay, L, Barish, K N, Bassalleck, B, Basye, A T, Bathe, S, Baublis, V, Baumann, C, Bazilevsky, A, Belikov, S, Belmont, R, Bennett, R, Berdnikov, A, Berdnikov, Y, Bickley, A A, Bok, J S, Boyle, K, Brooks, M L, Buesching, H, Bumazhnov, V, Bunce, G, Butsyk, S, Camacho, C M, Campbell, S, Chen, C-H, Chi, C Y, Chiu, M, Choi, I J, Choudhury, R K, Christiansen, P, Chujo, T, Chung, P, Chvala, O, Cianciolo, V, Citron, Z, Cole, B A, Connors, M, Constantin, P, Csanád, M, Csörgő, T, Dahms, T, Dairaku, S, Danchev, I, Das, K, Datta, A, David, G, Denisov, A, Deshpande, A, Desmond, E J, Dietzsch, O, Dion, A, Donadelli, M, Drapier, O, Drees, A, Drees, K A, Durham, J M, Durum, A, Dutta, D, Edwards, S, Efremenko, Y V, Ellinghaus, F, Engelmore, T, Enokizono, A, En'yo, H, Esumi, S, Fadem, B, Fields, D E, Finger, M, Finger, Jr, M, Fleuret, F, Fokin, S L, Fraenkel, Z, Frantz, J E, Franz, A, Frawley, A D, Fujiwara, K, Fukao, Y, Fusayasu, T, Garishvili, I, Glenn, A, Gong, H, Gonin, M, Goto, Y, Granier de Cassagnac, R, Grau, N
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Sprache:eng
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Zusammenfassung:Charged-pion-interferometry measurements were made with respect to the second- and third-order event plane for Au+Au collisions at sqrt[s_{NN}]=200  GeV. A strong azimuthal-angle dependence of the extracted Gaussian-source radii was observed with respect to both the second- and third-order event planes. The results for the second-order dependence indicate that the initial eccentricity is reduced during the medium evolution, which is consistent with previous results. In contrast, the results for the third-order dependence indicate that the initial triangular shape is significantly reduced and potentially reversed by the end of the medium evolution, and that the third-order oscillations are largely dominated by the dynamical effects from triangular flow.
ISSN:1079-7114