Azimuthal di-hadron correlations in d+ Au and Au + Au collisions at √sNN=200 GeV measured at the STAR detector

Aggarwal, M.; Ahammed, Z.; Alakhverdyants, A.; Alekseev, I.; Alford, J.; Anderson, B.; Arkhipkin, D.; Averichev, G.; Balewski, J.; Barnby, L.; Baumgart, S.; Beavis, D.; Bellwied, R.; Betancourt, M.; Betts, R.; Bhasin, A.; Bhati, A.; Bichsel, H.; Bielcik, J.; Bielcikova, J.; Biritz, B.; Bland, L.; Bonner, B.; Bouchet, J.; Braidot, E.; Brandin, A.; Bridgeman, A.; Bruna, E.; Bueltmann, S.; Bunzarov, I.; Burton, T.; Cai, X.; Caines, H.; Calderón de la Barca Sánchez, M.; Catu, O.; Cebra, D.; Cendejas, R.; Cervantes, M.; Chajecki, Z.; Chaloupka, P.; Chattopadhyay, S.; Chen, H.; Chen, J.; Chen, J.; Cheng, J.; Cherney, M.; Chikanian, A.; Choi, K.; Christie, W.; Chung, P.; Clarke, R.; Codrington, M.; Corliss, R.; Cramer, J.; Crawford, H.; Das, D.; Dash, S.; Davila Leyva, A.; De Silva, L.; Debbe, R.; Dedovich, T.; Derevschikov, A.; Derradi de Souza, R.; Didenko, L.; Djawotho, P.; Dogra, S.; Dong, X.; Drachenberg, J.; Draper, J.; Dunlop, J.; Dutta Mazumdar, M.; Efimov, L.; Elhalhuli, E.; Elnimr, M.; Engelage, J.; Eppley, G.; Erazmus, B.; Estienne, M.; Eun, L.; Evdokimov, O.; Fachini, P.; Fatemi, R.; Fedorisin, J.; Fersch, R.; Filip, P.; Finch, E.; Fine, V.; Fisyak, Y.; Gagliardi, C.; Gangadharan, D.; Ganti, M.; Garcia-Solis, E.; Geromitsos, A.; Geurts, F.; Ghazikhanian, V.; Ghosh, P.; Gorbunov, Y.; Gordon, A.; Grebenyuk, O.; Grosnick, D.; Guertin, S.; Gupta, A.; Gupta, N.; Guryn, W.; Haag, B.; Hamed, A.; Han, L.-X.; Harris, J.; Hays-Wehle, J.; Heinz, M.; Heppelmann, S.; Hirsch, A.; Hjort, E.; Hoffman, A.; Hoffmann, G.; Hofman, D.; Horner, M.; Huang, B.; Huang, H.; Humanic, T.; Huo, L.; Igo, G.; Jacobs, P.; Jacobs, W.; Jena, C.; Jin, F.; Jones, C.; Jones, P.; Joseph, J.; Judd, E.; Kabana, S.; Kajimoto, K.; Kang, K.; Kapitan, J.; Kauder, K.; Keane, D.; Kechechyan, A.; Kettler, D.; Kikola, D.; Kiryluk, J.; Kisiel, A.; Klein, S.; Knospe, A.; Kocoloski, A.; Koetke, D.; Kollegger, T.; Konzer, J.; Koralt, I.; Koroleva, L.; Korsch, W.; Kotchenda, L.; Kouchpil, V.; Kravtsov, P.; Krueger, K.; Krus, M.; Kumar, L.; Kurnadi, P.; Lamont, M.; Landgraf, J.; LaPointe, S.; Lauret, J.; Lebedev, A.; Lednicky, R.; Lee, C.-H.; Lee, J.; Leight, W.; LeVine, M.; Li, C.; Li, L.; Li, N.; Li, W.; Li, X.; Li, X.; Li, Y.; Li, Z.; Lin, G.; Lindenbaum, S.; Lisa, M.; Liu, F.; Liu, H.; Liu, J.; Ljubicic, T.; Llope, W.; Longacre, R.; Love, W.; Lu, Y.; Luo, X.; Ma, G.; Ma, Y.; Mahapatra, D.; Majka, R.; Mall, O.; Mangotra, L.; Manweiler, R.; Margetis, S.; Markert, C.; Masui, H.; Matis, H.; Matulenko, Yu.; McDonald, D.; McShane, T.; Meschanin, A.; Milner, R.; Minaev, N.; Mioduszewski, S.; Mischke, A.; Mitrovski, M.; Mohanty, B.; Mondal, M.; Morozov, B.; Morozov, D.; Munhoz, M.; Nandi, B.; Nattrass, C.; Nayak, T.; Nelson, J.; Netrakanti, P.; Ng, M.; Nogach, L.; Nurushev, S.; Odyniec, G.; Ogawa, A.; Okorokov, V.; Oldag, E.; Olson, D.; Pachr, M.; Page, B.; Pal, S.; Pandit, Y.; Panebratsev, Y.; Pawlak, T.; Peitzmann, T.; Perevoztchikov, V.; Perkins, C.; Peryt, W.; Phatak, S.; Pile, P.; Planinic, M.; Ploskon, M.; Pluta, J.; Plyku, D.; Poljak, N.; Poskanzer, A.; Potukuchi, B.; Powell, C.; Prindle, D.; Pruneau, C.; Pruthi, N.; Pujahari, P.; Putschke, J.; Raniwala, R.; Raniwala, S.; Ray, R.; Redwine, R.; Reed, R.; Ritter, H.; Roberts, J.; Rogachevskiy, O.; Romero, J.; Rose, A.; Roy, C.; Ruan, L.; Sahoo, R.; Sakai, S.; Sakrejda, I.; Sakuma, T.; Salur, S.; Sandweiss, J.; Sangaline, E.; Schambach, J.; Scharenberg, R.; Schmitz, N.; Schuster, T.; Seele, J.; Seger, J.; Selyuzhenkov, I.; Seyboth, P.; Shahaliev, E.; Shao, M.; Sharma, M.; Shi, S.; Sichtermann, E.; Simon, F.; Singaraju, R.; Skoby, M.; Smirnov, N.; Sorensen, P.; Sowinski, J.; Spinka, H.; Srivastava, B.; Stanislaus, T.; Staszak, D.; Stevens, J.; Stock, R.; Strikhanov, M.; Stringfellow, B.; Suaide, A.; Suarez, M.; Subba, N.; Sumbera, M.; Sun, X.; Sun, Y.; Sun, Z.; Surrow, B.; Svirida, D.; Symons, T.; Szanto de Toledo, A.; Takahashi, J.; Tang, A.; Tang, Z.; Tarini, L.; Tarnowsky, T.; Thein, D.; Thomas, J.; Tian, J.; Timmins, A.; Timoshenko, S.; Tlusty, D.; Tokarev, M.; Trainor, T.; Tram, V.; Trentalange, S.; Tribble, R.; Tsai, O.; Ulery, J.; Ullrich, T.; Underwood, D.; Van Buren, G.; van Leeuwen, M.; van Nieuwenhuizen, G.; Vanfossen, J.; Varma, R.; Vasconcelos, G.; Vasiliev, A.; Videbaek, F.; Viyogi, Y.; Vokal, S.; Voloshin, S.; Wada, M.; Walker, M.; Wang, F.; Wang, G.; Wang, H.; Wang, J.; Wang, Q.; Wang, X.; Wang, Y.; Webb, G.; Webb, J.; Westfall, G.; Whitten, C.; Wieman, H.; Wissink, S.; Witt, R.; Wu, Y.; Xie, W.; Xu, N.; Xu, Q.; Xu, W.; Xu, Y.; Xu, Z.; Xue, L.; Yang, Y.; Yepes, P.; Yip, K.; Yoo, I.-K.; Yue, Q.; Zawisza, M.; Zbroszczyk, H.; Zhan, W.; Zhang, J.; Zhang, S.; Zhang, W.; Zhang, X.; Zhang, Y.; Zhang, Z.; Zhao, J.; Zhong, C.; Zhou, J.; Zhou, W.; Zhu, X.; Zhu, Y.; Zoulkarneev, R.; Zoulkarneeva, Y.

Author(s)

Balewski, Jan T.; Betancourt, Michael Joseph; Corliss, Ross Cameron; Hays-Wehle, James Prewitt; Jones, Christopher LaDon; ... Show more

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Alternative title

Azimuthal di-hadron correlations in d+ Au and Au + Au collisions at [square root]s[subscript NN]=200 GeV measured at the STAR detector

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Abstract

Yields, correlation shapes, and mean transverse momenta pT [rho tau] of charged particles associated with intermediate- to high-pT [rho tau] trigger particles (2.5<pT[rho tau]<10 GeV/c) in d+ Au and Au + Au collisions at √[square root]sNN=200 GeV are presented. For associated particles at higher pT [rho tau] ≳2.5 GeV/c, narrow correlation peaks are seen in d+ Au and Au + Au, indicating that the main production mechanism is jet fragmentation. At lower associated particle pT [rho tau] <2 GeV/c, a large enhancement of the near- (Δϕ~0[delta phi~0]) and away-side (Δϕ~π [delta phi~pi]) associated yields is found, together with a strong broadening of the away-side azimuthal distributions in Au + Au collisions compared to d+ Au measurements, suggesting that other particle production mechanisms play a role. This is further supported by the observed significant softening of the away-side associated particle yield distribution at Δϕ~π [delta phi~pi] in central Au + Au collisions.

Date issued

2010-08

URI

http://hdl.handle.net/1721.1/60884

Department

Bates Linear Accelerator Center; Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear Science

Journal

Physical review C

Publisher

American Physical Society

Citation

Aggarwal, M. et al. “Azimuthal di-hadron correlations in d+ Au and Au + Au collisions at sqrt[s_{NN}]=200 GeV measured at the STAR detector.” Physical Review C 82.2 (2010): n. pag. © 2010 The American Physical Society

Version: Final published version

ISSN

0556-2813

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