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Measurement of two-particle correlations with respect to second- and third-order event planes in Au$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV

Ajitanand, N. N ; Alfred, M ; Awes, T. C ; Azmoun, B ; Baumann, C ; Belmont, R ; Bok, J. S ; Bumazhnov, V ; Camacho, C. M ; Roman, V. Canoa ; Chi, C. Y ; Choudhury, R. K ; Chvala, O ; Cianciolo, V ; Citron, Z ; Connors, M ; Csörgő, T ; Dahms, T ; Dion, A ; Drapier, O ; Feege, N ; Fleuret, F ; Frawley, A. D ; Glenn, A ; Gonin, M ; Hamblen, J ; Hayano, R ; Hemmick, T. K ; Hill, J. C ; Hodges, A ; Holzmann, W ; Horaguchi, T ; Ichihara, T ; Jacak, B. V ; Jin, J ; Kajihara, F ; Kametani, S ; Khachatryan, V ; Kim, D. H ; Kim, M ; Kincses, D ; Kiriluk, K ; Kiss, Á ; Komkov, B ; Kotov, D ; Kunde, G. J ; Lai, Y. S ; Lee, J ; Leite, M. A. L ; Love, B ; Lynch, D ; Malik, M. D ; Mao, Y ; Masui, H ; Means, N ; Mitsuka, G ; Mohanty, A. K ; Morino, Y ; Morrison, D. P ; Morrow, S. I ; Nakagawa, I ; Nakamura, T ; Nattrass, C ; Newby, J ; Novitzky, N ; Nyanin, A. S ; Pinkenburg, C ; Rakotozafindrabe, A ; Read, K. F ; Riabov, Y ; Rinn, T ; Roche, G ; Rolnick, S. D ; Sahlmueller, B ; Sano, S ; Sato, S ; Seele, J ; Semenov, A. Yu ; Shein, I ; Sickles, A ; Silva, C. L ; Slunečka, M ; Stankus, P. W ; Sugitate, T ; Sziklai, J ; Tanaka, Y ; Taranenko, A ; Thomas, T. L ; Tieulent, R ; Torii, H ; Tsuchimoto, Y ; Vale, C ; Vértesi, R ; Watanabe, Y ; Wei, R ; Wright, R. M ; Wysocki, M ; Yamaguchi, Y. L ; Yokkaichi, S ; Zharko, S

2018-03

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Título:
Measurement of two-particle correlations with respect to second- and third-order event planes in Au$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV
Autor: Ajitanand, N. N ; Alfred, M ; Awes, T. C ; Azmoun, B ; Baumann, C ; Belmont, R ; Bok, J. S ; Bumazhnov, V ; Camacho, C. M ; Roman, V. Canoa ; Chi, C. Y ; Choudhury, R. K ; Chvala, O ; Cianciolo, V ; Citron, Z ; Connors, M ; Csörgő, T ; Dahms, T ; Dion, A ; Drapier, O ; Feege, N ; Fleuret, F ; Frawley, A. D ; Glenn, A ; Gonin, M ; Hamblen, J ; Hayano, R ; Hemmick, T. K ; Hill, J. C ; Hodges, A ; Holzmann, W ; Horaguchi, T ; Ichihara, T ; Jacak, B. V ; Jin, J ; Kajihara, F ; Kametani, S ; Khachatryan, V ; Kim, D. H ; Kim, M ; Kincses, D ; Kiriluk, K ; Kiss, Á ; Komkov, B ; Kotov, D ; Kunde, G. J ; Lai, Y. S ; Lee, J ; Leite, M. A. L ; Love, B ; Lynch, D ; Malik, M. D ; Mao, Y ; Masui, H ; Means, N ; Mitsuka, G ; Mohanty, A. K ; Morino, Y ; Morrison, D. P ; Morrow, S. I ; Nakagawa, I ; Nakamura, T ; Nattrass, C ; Newby, J ; Novitzky, N ; Nyanin, A. S ; Pinkenburg, C ; Rakotozafindrabe, A ; Read, K. F ; Riabov, Y ; Rinn, T ; Roche, G ; Rolnick, S. D ; Sahlmueller, B ; Sano, S ; Sato, S ; Seele, J ; Semenov, A. Yu ; Shein, I ; Sickles, A ; Silva, C. L ; Slunečka, M ; Stankus, P. W ; Sugitate, T ; Sziklai, J ; Tanaka, Y ; Taranenko, A ; Thomas, T. L ; Tieulent, R ; Torii, H ; Tsuchimoto, Y ; Vale, C ; Vértesi, R ; Watanabe, Y ; Wei, R ; Wright, R. M ; Wysocki, M ; Yamaguchi, Y. L ; Yokkaichi, S ; Zharko, S
Assuntos: Physics - High Energy Physics - Experiment ; Physics - Nuclear Experiment
Descrição: Phys. Rev. C 99, 054903 (2019) We present measurements of azimuthal correlations of charged hadron pairs in $\sqrt{s_{_{NN}}}=200$ GeV Au$+$Au collisions for the trigger and associated particle transverse-momentum ranges of $1<p_T^t<10$~GeV/$c$ and $0.5<p_T^a<10$~GeV/$c$. After subtraction of an underlying event using a model that includes higher-order azimuthal anisotropy $v_2$, $v_3$, and $v_4$, the away-side yield of the highest trigger-\pt ($p_T^t>4$~GeV/$c$) correlations is suppressed compared to that of correlations measured in $p $ collisions. At the lowest associated particle $p_T$ ($0.5<p_T^a<1$ GeV/$c$), the away-side shape and yield are modified relative to those in $p $ collisions. These observations are consistent with the scenario of radiative-jet energy loss. For the low-$p_T$ trigger correlations ($2<p_T^t<4$ GeV/$c$), a finite away-side yield exists and we explore the dependence of the shape of the away-side within the context of an underlying-event model. Correlations are also studied differentially versus event-plane angle $\Psi_2$ and $\Psi_3$. The angular correlations show an asymmetry when selecting the sign of the difference between the trigger-particle azimuthal angle and the $\Psi_2$ event plane. This asymmetry and the measured suppression of the pair yield out of plane is consistent with a path-length-dependent energy loss. No $\Psi_3$ dependence can be resolved within experimental uncertainties.
Data de criação/publicação: 2018-03
Idioma: Inglês

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Measurement of two-particle correlations with respect to second- and third-order event planes in Au$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV

2018-03

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