Beam-energy dependence of the directed flow of protons, antiprotons, and pions in Au+Au collisions. uri icon

abstract

  • Rapidity-odd directed flow (v1) measurements for charged pions, protons, and antiprotons near midrapidity (y=0) are reported in sNN=7.7, 11.5, 19.6, 27, 39, 62.4, and 200GeV Au+Au collisions as recorded by the STAR detector at the Relativistic Heavy Ion Collider. At intermediate impact parameters, the proton and net-proton slope parameter dv1/dy|y=0 shows a minimum between 11.5 and 19.6GeV. In addition, the net-proton dv1/dy|y=0 changes sign twice between 7.7 and 39GeV. The proton and net-proton results qualitatively resemble predictions of a hydrodynamic model with a first-order phase transition from hadronic matter to deconfined matter, and differ from hadronic transport calculations.

published proceedings

  • Phys Rev Lett

altmetric score

  • 18

author list (cited authors)

  • Adamczyk, L., Adkins, J. K., Agakishiev, G., Aggarwal, M. M., Ahammed, Z., Alekseev, I., ... (STAR Collaboration).

citation count

  • 163

complete list of authors

  • Adamczyk, L||Adkins, JK||Agakishiev, G||Aggarwal, MM||Ahammed, Z||Alekseev, I||Alford, J||Anson, CD||Aparin, A||Arkhipkin, D||Aschenauer, EC||Averichev, GS||Banerjee, A||Beavis, DR||Bellwied, R||Bhasin, A||Bhati, AK||Bhattarai, P||Bichsel, H||Bielcik, J||Bielcikova, J||Bland, LC||Bordyuzhin, IG||Borowski, W||Bouchet, J||Brandin, AV||Brovko, SG||Bültmann, S||Bunzarov, I||Burton, TP||Butterworth, J||Caines, H||Calderón de la Barca Sánchez, M||Cebra, D||Cendejas, R||Cervantes, MC||Chaloupka, P||Chang, Z||Chattopadhyay, S||Chen, HF||Chen, JH||Chen, L||Cheng, J||Cherney, M||Chikanian, A||Christie, W||Chwastowski, J||Codrington, MJM||Contin, G||Cramer, JG||Crawford, HJ||Cui, X||Das, S||Davila Leyva, A||De Silva, LC||Debbe, RR||Dedovich, TG||Deng, J||Derevschikov, AA||Derradi de Souza, R||Dhamija, S||di Ruzza, B||Didenko, L||Dilks, C||Ding, F||Djawotho, P||Dong, X||Drachenberg, JL||Draper, JE||Du, CM||Dunkelberger, LE||Dunlop, JC||Efimov, LG||Engelage, J||Engle, KS||Eppley, G||Eun, L||Evdokimov, O||Eyser, O||Fatemi, R||Fazio, S||Fedorisin, J||Filip, P||Finch, E||Fisyak, Y||Flores, CE||Gagliardi, CA||Gangadharan, DR||Garand, D||Geurts, F||Gibson, A||Girard, M||Gliske, S||Greiner, L||Grosnick, D||Gunarathne, DS||Guo, Y||Gupta, A||Gupta, S||Guryn, W||Haag, B||Hamed, A||Han, L-X||Haque, R||Harris, JW||Heppelmann, S||Hirsch, A||Hoffmann, GW||Hofman, DJ||Horvat, S||Huang, B||Huang, HZ||Huang, X||Huck, P||Humanic, TJ||Igo, G||Jacobs, WW||Jang, H||Judd, EG||Kabana, S||Kalinkin, D||Kang, K||Kauder, K||Ke, HW||Keane, D||Kechechyan, A||Kesich, A||Khan, ZH||Kikola, DP||Kisel, I||Kisiel, A||Koetke, DD||Kollegger, T||Konzer, J||Koralt, I||Kotchenda, L||Kraishan, AF||Kravtsov, P||Krueger, K||Kulakov, I||Kumar, L||Kycia, RA||Lamont, MAC||Landgraf, JM||Landry, KD||Lauret, J||Lebedev, A||Lednicky, R||Lee, JH||Levine, MJ||Li, C||Li, W||Li, X||Li, X||Li, Y||Li, ZM||Lisa, MA||Liu, F||Ljubicic, T||Llope, WJ||Lomnitz, M||Longacre, RS||Luo, X||Ma, GL||Ma, YG||Madagodagettige Don, DMMD||Mahapatra, DP||Majka, R||Margetis, S||Markert, C||Masui, H||Matis, HS||McDonald, D||McShane, TS||Minaev, NG||Mioduszewski, S||Mohanty, B||Mondal, MM||Morozov, DA||Mustafa, MK||Nandi, BK||Nasim, Md||Nayak, TK||Nelson, JM||Nigmatkulov, G||Nogach, LV||Noh, SY||Novak, J||Nurushev, SB||Odyniec, G||Ogawa, A||Oh, K||Ohlson, A||Okorokov, V||Oldag, EW||Olvitt, DL||Pachr, M||Page, BS||Pal, SK||Pan, YX||Pandit, Y||Panebratsev, Y||Pawlak, T||Pawlik, B||Pei, H||Perkins, C||Peryt, W||Pile, P||Planinic, M||Pluta, J||Poljak, N||Porter, J||Poskanzer, AM||Pruthi, NK||Przybycien, M||Pujahari, PR||Putschke, J||Qiu, H||Quintero, A||Ramachandran, S||Raniwala, R||Raniwala, S||Ray, RL||Riley, CK||Ritter, HG||Roberts, JB||Rogachevskiy, OV||Romero, JL||Ross, JF||Roy, A||Ruan, L||Rusnak, J||Rusnakova, O||Sahoo, NR||Sahu, PK||Sakrejda, I||Salur, S||Sandweiss, J||Sangaline, E||Sarkar, A||Schambach, J||Scharenberg, RP||Schmah, AM||Schmidke, WB||Schmitz, N||Seger, J||Seyboth, P||Shah, N||Shahaliev, E||Shanmuganathan, PV||Shao, M||Sharma, B||Shen, WQ||Shi, SS||Shou, QY||Sichtermann, EP||Singaraju, RN||Skoby, MJ||Smirnov, D||Smirnov, N||Solanki, D||Sorensen, P||Spinka, HM||Srivastava, B||Stanislaus, TDS||Stevens, JR||Stock, R||Strikhanov, M||Stringfellow, B||Sumbera, M||Sun, X||Sun, XM||Sun, Y||Sun, Z||Surrow, B||Svirida, DN||Symons, TJM||Szelezniak, MA||Takahashi, J||Tang, AH||Tang, Z||Tarnowsky, T||Thomas, JH||Timmins, AR||Tlusty, D||Tokarev, M||Trentalange, S||Tribble, RE||Tribedy, P||Trzeciak, BA||Tsai, OD||Turnau, J||Ullrich, T||Underwood, DG||Van Buren, G||van Nieuwenhuizen, G||Vandenbroucke, M||Vanfossen, JA||Varma, R||Vasconcelos, GMS||Vasiliev, AN||Vertesi, R||Videbæk, F||Viyogi, YP||Vokal, S||Vossen, A||Wada, M||Wang, F||Wang, G||Wang, H||Wang, JS||Wang, XL||Wang, Y||Wang, Y||Webb, G||Webb, JC||Westfall, GD||Wieman, H||Wissink, SW||Witt, R||Wu, YF||Xiao, Z||Xie, W||Xin, K||Xu, H||Xu, J||Xu, N||Xu, QH||Xu, Y||Xu, Z||Yan, W||Yang, C||Yang, Y||Yang, Y||Ye, Z||Yepes, P||Yi, L||Yip, K||Yoo, I-K||Yu, N||Zawisza, Y||Zbroszczyk, H||Zha, W||Zhang, JB||Zhang, JL||Zhang, S||Zhang, XP||Zhang, Y||Zhang, ZP||Zhao, F||Zhao, J||Zhong, C||Zhu, X||Zhu, YH||Zoulkarneeva, Y||Zyzak, M

publication date

  • April 2014