0 photoproduction in AuAu collisions at sNN=62.4 GeV measured with the STAR detector uri icon

abstract

  • Vector mesons may be photoproduced in relativistic heavy-ion collisions when a virtual photon emitted by one nucleus scatters from the other nucleus, emerging as a vector meson. The STAR Collaboration has previously presented measurements of coherent 0 photoproduction at center of mass energies of 130 GeV and 200 GeV in AuAu collisions. Here, we present a measurement of the cross section at 62.4 GeV; we find that the cross section for coherent 0 photoproduction with nuclear breakup is 10.51.51.6 mb at 62.4 GeV. The cross-section ratio between 200 GeV and 62.4 GeV is 4.40.6, less than is predicted by most theoretical models. It is, however, proportionally much larger than the previously observed 15%55% increase between 130 GeV and 200 GeV. 2012 American Physical Society.

published proceedings

  • PHYSICAL REVIEW C

author list (cited authors)

  • Agakishiev, G., Aggarwal, M. M., Ahammed, Z., Alakhverdyants, A. V., Alekseev, I., Alford, J., ... Zoulkarneeva, Y.

complete list of authors

  • Agakishiev, G||Aggarwal, MM||Ahammed, Z||Alakhverdyants, AV||Alekseev, I||Alford, J||Anderson, BD||Anson, CD||Arkhipkin, D||Averichev, GS||Balewski, J||Beavis, DR||Behera, NK||Bellwied, R||Betancourt, MJ||Betts, RR||Bhasin, A||Bhati, AK||Bichsel, H||Bielcik, J||Bielcikova, J||Bland, LC||Bordyuzhin, IG||Borowski, W||Bouchet, J||Braidot, E||Brandin, AV||Bridgeman, A||Brovko, SG||Bruna, E||Bueltmann, S||Bunzarov, I||Burton, TP||Cai, XZ||Caines, H||de la Barca Sánchez, M Calderon||Cebra, D||Cendejas, R||Cervantes, MC||Chaloupka, P||Chattopadhyay, S||Chen, HF||Chen, JH||Chen, JY||Chen, L||Cheng, J||Cherney, M||Chikanian, A||Choi, KE||Christie, W||Chung, P||Codrington, MJM||Corliss, R||Cramer, JG||Crawford, HJ||Leyva, A Davila||De Silva, LC||Debbe, RR||Dedovich, TG||Deng, J||Derevschikov, AA||de Souza, R Derradi||Didenko, L||Djawotho, P||Dogra, SM||Dong, X||Drachenberg, JL||Draper, JE||Du, CM||Dunlop, JC||Efimov, LG||Elnimr, M||Engelage, J||Eppley, G||Estienne, M||Eun, L||Evdokimov, O||Fatemi, R||Fedorisin, J||Fersch, RG||Filip, P||Finch, E||Fine, V||Fisyak, Y||Gagliardi, CA||Geurts, F||Ghosh, P||Gorbunov, YN||Gordon, A||Grebenyuk, OG||Grosnick, D||Gupta, A||Gupta, S||Guryn, W||Haag, B||Hajkova, O||Hamed, A||Han, L-X||Harris, JW||Hays-Wehle, JP||Heinz, M||Heppelmann, S||Hirsch, A||Hjort, E||Hoffmann, GW||Hofman, DJ||Huang, B||Huang, HZ||Humanic, TJ||Huo, L||Igo, G||Jacobs, P||Jacobs, WW||Jena, C||Jin, F||Joseph, J||Judd, EG||Kabana, S||Kang, K||Kapitan, J||Kauder, K||Ke, HW||Keane, D||Kechechyan, A||Kettler, D||Kikola, DP||Kiryluk, J||Kisiel, A||Kizka, V||Klein, SR||Knospe, AG||Koetke, DD||Kollegger, T||Konzer, J||Koralt, I||Koroleva, L||Korsch, W||Kotchenda, L||Kouchpil, V||Kravtsov, P||Krueger, K||Krus, M||Kumar, L||Lamont, MAC||Landgraf, JM||LaPointe, S||Lauret, J||Lebedev, A||Lednicky, R||Lee, JH||Leight, W||LeVine, MJ||Li, C||Li, L||Li, N||Li, W||Li, X||Li, X||Li, Y||Li, ZM||Lima, LM||Lisa, MA||Liu, F||Liu, H||Liu, J||Ljubicic, T||Llope, WJ||Longacre, RS||Lu, Y||Lukashov, EV||Luo, X||Ma, GL||Ma, YG||Mahapatra, DP||Majka, R||Mall, OI||Manweiler, R||Margetis, S||Markert, C||Masui, H||Matis, HS||McDonald, D||McShane, TS||Meschanin, A||Milner, R||Minaev, NG||Mioduszewski, S||Mitrovski, MK||Mohammed, Y||Mohanty, B||Mondal, MM||Morozov, B||Morozov, DA||Munhoz, MG||Mustafa, MK||Naglis, M||Nandi, BK||Nayak, TK||Nogach, LV||Nurushev, SB||Odyniec, G||Ogawa, A||Oh, K||Ohlson, A||Okorokov, V||Oldag, EW||Oliveira, RAN||Olson, D||Pachr, M||Page, BS||Pal, SK||Pandit, Y||Panebratsev, Y||Pawlak, T||Pei, H||Peitzmann, T||Perkins, C||Peryt, W||Pile, P||Planinic, M||Ploskon, MA||Pluta, J||Plyku, D||Poljak, N||Porter, J||Poskanzer, AM||Potukuchi, BVKS||Powell, CB||Prindle, D||Pruneau, C||Pruthi, NK||Pujahari, PR||Putschke, J||Qiu, H||Raniwala, R||Raniwala, S||Ray, RL||Redwine, R||Reed, R||Ritter, HG||Roberts, JB||Rogachevskiy, OV||Romero, JL||Ruan, L||Rusnak, J||Sahoo, NR||Sakrejda, I||Salur, S||Sandweiss, J||Sangaline, E||Sarkar, A||Schambach, J||Scharenberg, RP||Schaub, J||Schmah, AM||Schmitz, N||Schuster, TR||Seele, J||Seger, J||Selyuzhenkov, I||Seyboth, P||Shah, N||Shahaliev, E||Shao, M||Sharma, M||Shi, SS||Shou, QY||Sichtermann, EP||Simon, F||Singaraju, RN||Skoby, MJ||Smirnov, N||Solanki, D||Sorensen, P||deSouza, UG||Spinka, HM||Srivastava, B||Stanislaus, TDS||Steadman, SG||Stevens, JR||Stock, R||Strikhanov, M||Stringfellow, B||Suaide, AAP||Suarez, MC||Subba, NL||Sumbera, M||Sun, XM||Sun, Y||Sun, Z||Surrow, B||Svirida, DN||Symons, TJM||de Toledo, A Szanto||Takahashi, J||Tang, AH||Tang, Z||Tarini, LH||Tarnowsky, T||Thein, D||Thomas, JH||Tian, J||Timmins, AR||Tlusty, D||Tokarev, M||Trainor, TA||Trentalange, S||Tribble, RE||Tribedy, P||Trzeciak, BA||Tsai, OD||Ullrich, T||Underwood, DG||Van Buren, G||van Nieuwenhuizen, G||Vanfossen, JA Jr||Varma, R||Vasconcelos, GMS||Vasiliev, AN||Videbaek, F||Viyogi, YP||Vokal, S||Voloshin, SA||Wada, M||Walker, M||Wang, F||Wang, G||Wang, H||Wang, JS||Wang, Q||Wang, XL||Wang, Y||Webb, G||Webb, JC||Westfall, GD||Whitten, C Jr||Wieman, H||Wissink, SW||Witt, R||Witzke, W||Wu, YF||Xiao, Z||Xie, W||Xu, H||Xu, N||Xu, QH||Xu, W||Xu, Y||Xu, Z||Xue, L||Yang, Y||Yang, Y||Yepes, P||Yip, K||Yoo, I-K||Zawisza, M||Zbroszczyk, H||Zhan, W||Zhang, JB||Zhang, S||Zhang, WM||Zhang, XP||Zhang, Y||Zhang, ZP||Zhao, F||Zhao, J||Zhong, C||Zhu, X||Zhu, YH||Zoulkarneeva, Y