Observation of++photoproduction in ultraperipheral heavy-ion collisions atsNN=200GeV at the STAR detector Academic Article uri icon

abstract

  • We present a measurement of + -+- photonuclear production in ultraperipheral Au-Au collisions at sNN=200 GeV from the STAR experiment. The +-+- final states are observed at low transverse momentum and are accompanied by mutual nuclear excitation of the beam particles. The strong enhancement of the production cross section at low transverse momentum is consistent with coherent photoproduction. The +-+ - invariant mass spectrum of the coherent events exhibits a broad peak around 154040 MeV/c2 with a width of 57060 MeV/c2, in agreement with the photoproduction data for the 0(1700). We do not observe a corresponding peak in the +- final state and measure an upper limit for the ratio of the branching fractions of the 0(1700) to +- and + -+- of 2.5% at 90% confidence level. The ratio of 0(1700) and 0(770) coherent production cross sections is measured to be 13.40.8stat.4.4syst.%. 2010 The American Physical Society.

published proceedings

  • Physical Review C

author list (cited authors)

  • Abelev, B. I., Aggarwal, M. M., Ahammed, Z., Alakhverdyants, A. V., Anderson, B. D., Arkhipkin, D., ... Zoulkarneeva, Y.

citation count

  • 15

complete list of authors

  • Abelev, BI||Aggarwal, MM||Ahammed, Z||Alakhverdyants, AV||Anderson, BD||Arkhipkin, D||Averichev, GS||Balewski, J||Barnby, LS||Baumgart, S||Beavis, DR||Bellwied, R||Benedosso, F||Betancourt, MJ||Betts, RR||Bhasin, A||Bhati, AK||Bichsel, H||Bielcik, J||Bielcikova, J||Biritz, B||Bland, LC||Bonner, BE||Bouchet, J||Braidot, E||Brandin, AV||Bridgeman, A||Bruna, E||Bueltmann, S||Bunzarov, I||Burton, TP||Cai, XZ||Caines, H||Calderón de la Barca Sánchez, M||Catu, O||Cebra, D||Cendejas, R||Cervantes, MC||Chajecki, Z||Chaloupka, P||Chattopadhyay, S||Chen, HF||Chen, JH||Chen, JY||Cheng, J||Cherney, M||Chikanian, A||Choi, KE||Christie, W||Chung, P||Chung, SU||Clarke, RF||Codrington, MJM||Corliss, R||Cramer, JG||Crawford, HJ||Das, D||Dash, S||Davila Leyva, A||De Silva, LC||Debbe, RR||Dedovich, TG||DePhillips, M||Derevschikov, AA||Derradi de Souza, R||Didenko, L||Djawotho, P||Dogra, SM||Dong, X||Drachenberg, JL||Draper, JE||Dunlop, JC||Dutta Mazumdar, MR||Efimov, LG||Elhalhuli, E||Elnimr, M||Engelage, J||Eppley, G||Erazmus, B||Estienne, M||Eun, L||Evdokimov, O||Fachini, P||Fatemi, R||Fedorisin, J||Fersch, RG||Filip, P||Finch, E||Fine, V||Fisyak, Y||Gagliardi, CA||Gangadharan, DR||Ganti, MS||Garcia-Solis, EJ||Geromitsos, A||Geurts, F||Ghazikhanian, V||Ghosh, P||Gorbunov, YN||Gordon, A||Grebenyuk, O||Grosnick, D||Grube, B||Guertin, SM||Gupta, A||Gupta, N||Guryn, W||Haag, B||Hallman, TJ||Hamed, A||Han, L-X||Harris, JW||Hays-Wehle, JP||Heinz, M||Heppelmann, S||Hirsch, A||Hjort, E||Hoffman, AM||Hoffmann, GW||Hofman, DJ||Hollis, RS||Huang, HZ||Humanic, TJ||Huo, L||Igo, G||Iordanova, A||Jacobs, P||Jacobs, WW||Jakl, P||Jena, C||Jin, F||Jones, CL||Jones, PG||Joseph, J||Judd, EG||Kabana, S||Kajimoto, K||Kang, K||Kapitan, J||Kauder, K||Keane, D||Kechechyan, A||Kettler, D||Kikola, DP||Kiryluk, J||Kisiel, A||Klein, SR||Knospe, AG||Kocoloski, A||Koetke, DD||Kollegger, T||Konzer, J||Kopytine, M||Koralt, I||Korsch, W||Kotchenda, L||Kouchpil, V||Kravtsov, P||Krueger, K||Krus, M||Kumar, L||Kurnadi, P||Lamont, MAC||Landgraf, JM||LaPointe, S||Lauret, J||Lebedev, A||Lednicky, R||Lee, C-H||Lee, JH||Leight, W||LeVine, MJ||Li, C||Li, L||Li, N||Li, W||Li, X||Li, X||Li, Y||Li, Z||Lin, G||Lindenbaum, SJ||Lisa, MA||Liu, F||Liu, H||Liu, J||Ljubicic, T||Llope, WJ||Longacre, RS||Love, WA||Lu, Y||Ma, GL||Ma, YG||Mahapatra, DP||Majka, R||Mall, OI||Mangotra, LK||Manweiler, R||Margetis, S||Markert, C||Masui, H||Matis, HS||Matulenko, Yu A||McDonald, D||McShane, TS||Meschanin, A||Milner, R||Minaev, NG||Mioduszewski, S||Mischke, A||Mitrovski, MK||Mohanty, B||Mondal, MM||Morozov, DA||Munhoz, MG||Nandi, BK||Nattrass, C||Nayak, TK||Nelson, JM||Netrakanti, PK||Ng, MJ||Nogach, LV||Nurushev, SB||Odyniec, G||Ogawa, A||Okada, H||Okorokov, V||Olson, D||Pachr, M||Page, BS||Pal, SK||Pandit, Y||Panebratsev, Y||Pawlak, T||Peitzmann, T||Perevoztchikov, V||Perkins, C||Peryt, W||Phatak, SC||Pile, P||Planinic, M||Ploskon, MA||Pluta, J||Plyku, D||Poljak, N||Poskanzer, AM||Potukuchi, BVKS||Powell, CB||Prindle, D||Pruneau, C||Pruthi, NK||Pujahari, PR||Putschke, J||Raniwala, R||Raniwala, S||Ray, RL||Redwine, R||Reed, R||Rehberg, JM||Ritter, HG||Roberts, JB||Rogachevskiy, OV||Romero, JL||Rose, A||Roy, C||Ruan, L||Russcher, MJ||Sahoo, R||Sakai, S||Sakrejda, I||Sakuma, T||Salur, S||Sandweiss, J||Sangaline, E||Schambach, J||Scharenberg, RP||Schmitz, N||Schuster, TR||Seele, J||Seger, J||Selyuzhenkov, I||Seyboth, P||Shahaliev, E||Shao, M||Sharma, M||Shi, SS||Sichtermann, EP||Simon, F||Singaraju, RN||Skoby, MJ||Smirnov, N||Sorensen, P||Sowinski, J||Spinka, HM||Srivastava, B||Stanislaus, TDS||Staszak, D||Stevens, JR||Stock, R||Strikhanov, M||Stringfellow, B||Suaide, AAP||Suarez, MC||Subba, NL||Sumbera, M||Sun, XM||Sun, Y||Sun, Z||Surrow, B||Symons, TJM||Szanto de Toledo, A||Takahashi, J||Tang, AH||Tang, Z||Tarini, LH||Tarnowsky, T||Thein, D||Thomas, JH||Tian, J||Timmins, AR||Timoshenko, S||Tlusty, D||Tokarev, M||Trainor, TA||Tram, VN||Trentalange, S||Tribble, RE||Tsai, OD||Ulery, J||Ullrich, T||Underwood, DG||Van Buren, G||van Nieuwenhuizen, G||Vanfossen, JA||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, X||Wang, XL||Wang, Y||Webb, G||Webb, JC||Westfall, GD||Whitten, C||Wieman, H||Wingfield, E||Wissink, SW||Witt, R||Wu, Y||Xie, W||Xu, N||Xu, QH||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, S||Zhang, WM||Zhang, XP||Zhang, Y||Zhang, ZP||Zhao, J||Zhong, C||Zhou, J||Zhou, W||Zhu, X||Zhu, YH||Zoulkarneev, R||Zoulkarneeva, Y

publication date

  • April 2010