Center of mass energy and system-size dependence of photon production at forward rapidity at RHIC

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

Research output: Contribution to journal › Article

10 Citations (Scopus)

Abstract

We present the multiplicity and pseudorapidity distributions of photons produced in Au + Au and Cu + Cu collisions at sqrt(sNN) = 62.4 and 200 GeV. The photons are measured in the region - 3.7 <η <- 2.3 using the photon multiplicity detector in the STAR experiment at RHIC. The number of photons produced per average number of participating nucleon pairs increases with the beam energy and is independent of the collision centrality. For collisions with similar average numbers of participating nucleons the photon multiplicities are observed to be similar for Au + Au and Cu + Cu collisions at a given beam energy. The ratios of the number of charged particles to photons in the measured pseudorapidity range are found to be 1.4 ± 0.1 and 1.2 ± 0.1 for sqrt(sNN) = 62.4 and 200 GeV, respectively. The energy dependence of this ratio could reflect varying contributions from baryons to charged particles, while mesons are the dominant contributors to photon production in the given kinematic region. The photon pseudorapidity distributions normalized by average number of participating nucleon pairs, when plotted as a function of η - ybeam, are found to follow a longitudinal scaling independent of centrality and colliding ion species at both beam energies.

Original languageEnglish
Pages (from-to)134-147
Number of pages14
JournalNuclear Physics A
Volume832
Issue number1-2
DOIs
StatePublished - Jan 1 2010

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center of mass
photons
collisions
energy
charged particles
nucleons
baryons
kinematics
mesons
scaling
detectors
ions

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Cite this

Abelev, B. I., Aggarwal, M. M., Ahammed, Z., Alakhverdyants, A. V., Anderson, B. D., Arkhipkin, D., ... Zuo, J. X. (2010). Center of mass energy and system-size dependence of photon production at forward rapidity at RHIC. Nuclear Physics A, 832(1-2), 134-147. https://doi.org/10.1016/j.nuclphysa.2009.11.011

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

In: Nuclear Physics A, Vol. 832, No. 1-2, 01.01.2010, p. 134-147.

Research output: Contribution to journal › Article

Abelev, BI, Aggarwal, MM, Ahammed, Z, Alakhverdyants, AV, Anderson, BD, Arkhipkin, D, Averichev, GS, Badyal, SK, Balewski, J, Barannikova, O, Barnby, LS, Baudot, J, 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, Bnzarov, I, Bombara, M, Bonner, BE, Bouchet, J, Braidot, E, Brandin, AV, Bruna, E, Bueltmann, S, Burton, TP, Bystersky, M, Cai, XZ, Caines, H, Calderón, M, Catu, O, Cebra, D, Cendejas, R, Cervantes, MC, Chajecki, Z, Chaloupka, P, Chattopadhyay, S, Chen, HF, Chen, JH, Chen, JY, Cheng, J, Cherney, MG, Chikanian, A, Choi, KE, Christie, W, Clarke, RF, Codrington, MJM, Corliss, R, Cormier, TM, Cosentino, MR, Cramer, JG, Crawford, HJ, Das, D, Das, S, Dash, S, Daugherity, M, De Silva, LC, Dedovich, TG, DePhillips, M, Derevschikov, AA, Derradi de Souza, R, Didenko, L, Djawotho, P, Dogra, SM, Dong, X, Drachenberg, JL, Draper, JE, Dunlop, JC, Mazumdar, MRD, Efimov, LG, Elhalhuli, E, Elnimr, M, Engelage, J, Eppley, G, Erazmus, B, Estienne, M, Eun, L, Fachini, P, Fatemi, R, Fedorisin, J, Feng, A, Filip, P, Finch, E, Fine, V, Fisyak, Y, Gagliardi, CA, Gaillard, L, 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, Guimaraes, KSFF, Gupta, A, Gupta, N, Guryn, W, Haag, B, Hallman, TJ, Hamed, A, Harris, JW, He, W, Heinz, M, Hepplemann, S, Hippolyte, B, 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, Khodyrev, VY, Kikola, DP, Kiryluk, J, Kisiel, A, Klein, SR, Knospe, AG, Kocoloski, A, Koetke, DD, Konzer, J, Kopytine, M, Koralt, I, Korsch, W, Kotchenda, L, Kouchpil, V, Kravtsov, P, Kravtsov, VI, Krueger, K, Krus, M, Kuhn, C, Kumar, L, Kurnadi, P, Lamont, MAC, Landgraf, JM, LaPointe, S, Lauret, J, Lebedev, A, Lednicky, R, Lee, CH, Lee, JH, Leight, W, LeVine, MJ, Li, C, Li, N, Li, Y, Lin, G, Lindenbaum, SJ, Lisa, MA, Liu, F, Liu, H, Liu, J, Liu, L, Ljubicic, T, Llope, WJ, Longacre, RS, Love, WA, Lu, Y, Ludlam, T, Ma, GL, Ma, YG, Mahapatra, DP, Majka, R, Mall, OI, Mangotra, LK, Manweiler, R, Margetis, S, Markert, C, Masui, H, Matis, HS, Matulenko, YA, McDonald, D, McShane, TS, Meschanin, A, Millner, R, Minaev, NG, Mioduszewski, S, Mischke, A, 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, Prindle, D, Pruneau, C, Pruthi, NK, Pujahari, PR, Putschke, J, Raniwala, R, Raniwala, S, Ray, RL, Redwine, R, Reed, R, Ridiger, A, 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, Sarsour, M, Schambach, J, Scharenberg, RP, Schmitz, N, Seger, JE, Selyuzhenkov, I, Seyboth, P, Shabetai, A, Shahaliev, E, Shao, M, Sharma, M, Shi, SS, Shi, XH, Sichtermann, EP, Simon, F, Singaraju, RN, Skoby, MJ, Smirnov, N, Sorensen, P, Sowinski, J, Spinka, HM, Srivastava, B, Stanislaus, TDS, Staszak, D, 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, Trattner, AL, Trentalange, S, Tribble, RE, Tsai, OD, Ulery, J, Ullrich, T, Underwood, DG, Van Buren, G, van Leeuwen, M, van Nieuwenhuizen, G, Vanfossen, JA, Varma, R, Vasconcelos, GMS, Vasiliev, AN, Videbaek, F, Vigdor, SE, 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, Wissink, SW, Witt, R, Wu, Y, Xie, W, Xu, N, Xu, QH, Xu, Y, Xu, Z, Yang, Y, Yepes, P, Yip, K, Yoo, IK, Yue, Q, Zawisza, M, Zbroszczyk, H, Zhan, W, Zhang, S, Zhang, WM, Zhang, XP, Zhang, Y, Zhang, ZP, Zhao, Y, Zhong, C, Zhou, J, Zhu, X, Zoulkarneev, R, Zoulkarneeva, Y & Zuo, JX 2010, 'Center of mass energy and system-size dependence of photon production at forward rapidity at RHIC', Nuclear Physics A, vol. 832, no. 1-2, pp. 134-147. https://doi.org/10.1016/j.nuclphysa.2009.11.011
Abelev BI, Aggarwal MM, Ahammed Z, Alakhverdyants AV, Anderson BD, Arkhipkin D et al. Center of mass energy and system-size dependence of photon production at forward rapidity at RHIC. Nuclear Physics A. 2010 Jan 1;832(1-2):134-147. https://doi.org/10.1016/j.nuclphysa.2009.11.011
Abelev, B. I. ; Aggarwal, M. M. ; Ahammed, Z. ; Alakhverdyants, A. V. ; Anderson, B. D. ; Arkhipkin, D. ; Averichev, G. S. ; Badyal, S. K. ; Balewski, J. ; Barannikova, O. ; Barnby, L. S. ; Baudot, J. ; Baumgart, S. ; Beavis, D. R. ; Bellwied, R. ; Benedosso, F. ; Betancourt, M. J. ; Betts, R. R. ; Bhasin, A. ; Bhati, A. K. ; Bichsel, H. ; Bielcik, J. ; Bielcikova, J. ; Biritz, B. ; Bland, L. C. ; Bnzarov, I. ; Bombara, M. ; Bonner, B. E. ; Bouchet, J. ; Braidot, E. ; Brandin, A. V. ; Bruna, E. ; Bueltmann, S. ; Burton, T. P. ; Bystersky, M. ; Cai, X. Z. ; Caines, H. ; Calderón, M. ; Catu, O. ; Cebra, D. ; Cendejas, R. ; Cervantes, M. C. ; Chajecki, Z. ; Chaloupka, P. ; Chattopadhyay, S. ; Chen, H. F. ; Chen, J. H. ; Chen, J. Y. ; Cheng, J. ; Cherney, Michael G. ; Chikanian, A. ; Choi, K. E. ; Christie, W. ; Clarke, R. F. ; Codrington, M. J M ; Corliss, R. ; Cormier, T. M. ; Cosentino, M. R. ; Cramer, J. G. ; Crawford, H. J. ; Das, D. ; Das, S. ; Dash, S. ; Daugherity, M. ; De Silva, L. C. ; Dedovich, T. G. ; DePhillips, M. ; Derevschikov, A. A. ; Derradi de Souza, R. ; Didenko, L. ; Djawotho, P. ; Dogra, S. M. ; Dong, X. ; Drachenberg, J. L. ; Draper, J. E. ; Dunlop, J. C. ; Mazumdar, M. R Dutta ; Efimov, L. G. ; Elhalhuli, E. ; Elnimr, M. ; Engelage, J. ; Eppley, G. ; Erazmus, B. ; Estienne, M. ; Eun, L. ; Fachini, P. ; Fatemi, R. ; Fedorisin, J. ; Feng, A. ; Filip, P. ; Finch, E. ; Fine, V. ; Fisyak, Y. ; Gagliardi, C. A. ; Gaillard, L. ; Gangadharan, D. R. ; Ganti, M. S. ; Garcia-Solis, E. J. ; Geromitsos, A. ; Geurts, F. ; Ghazikhanian, V. ; Ghosh, P. ; Gorbunov, Y. N. ; Gordon, A. ; Grebenyuk, O. ; Grosnick, D. ; Grube, B. ; Guertin, S. M. ; Guimaraes, K. S F F ; Gupta, A. ; Gupta, N. ; Guryn, W. ; Haag, B. ; Hallman, T. J. ; Hamed, A. ; Harris, J. W. ; He, W. ; Heinz, M. ; Hepplemann, S. ; Hippolyte, B. ; Hirsch, A. ; Hjort, E. ; Hoffman, A. M. ; Hoffmann, G. W. ; Hofman, D. J. ; Hollis, R. S. ; Huang, H. Z. ; Humanic, T. J. ; Huo, L. ; Igo, G. ; Iordanova, A. ; Jacobs, P. ; Jacobs, W. W. ; Jakl, P. ; Jena, C. ; Jin, F. ; Jones, C. L. ; Jones, P. G. ; Joseph, J. ; Judd, E. G. ; Kabana, S. ; Kajimoto, K. ; Kang, K. ; Kapitan, J. ; Kauder, K. ; Keane, D. ; Kechechyan, A. ; Kettler, D. ; Khodyrev, V. Yu ; Kikola, D. P. ; Kiryluk, J. ; Kisiel, A. ; Klein, S. R. ; Knospe, A. G. ; Kocoloski, A. ; Koetke, D. D. ; Konzer, J. ; Kopytine, M. ; Koralt, I. ; Korsch, W. ; Kotchenda, L. ; Kouchpil, V. ; Kravtsov, P. ; Kravtsov, V. I. ; Krueger, K. ; Krus, M. ; Kuhn, C. ; Kumar, L. ; Kurnadi, P. ; Lamont, M. A C ; Landgraf, J. M. ; LaPointe, S. ; Lauret, J. ; Lebedev, A. ; Lednicky, R. ; Lee, C. H. ; Lee, J. H. ; Leight, W. ; LeVine, M. J. ; Li, C. ; Li, N. ; Li, Y. ; Lin, G. ; Lindenbaum, S. J. ; Lisa, M. A. ; Liu, F. ; Liu, H. ; Liu, J. ; Liu, L. ; Ljubicic, T. ; Llope, W. J. ; Longacre, R. S. ; Love, W. A. ; Lu, Y. ; Ludlam, T. ; Ma, G. L. ; Ma, Y. G. ; Mahapatra, D. P. ; Majka, R. ; Mall, O. I. ; Mangotra, L. K. ; Manweiler, R. ; Margetis, S. ; Markert, C. ; Masui, H. ; Matis, H. S. ; Matulenko, Yu A. ; McDonald, D. ; McShane, T. S. ; Meschanin, A. ; Millner, R. ; Minaev, N. G. ; Mioduszewski, S. ; Mischke, A. ; Mohanty, B. ; Mondal, M. M. ; Morozov, D. A. ; Munhoz, M. G. ; Nandi, B. K. ; Nattrass, C. ; Nayak, T. K. ; Nelson, J. M. ; Netrakanti, P. K. ; Ng, M. J. ; Nogach, L. V. ; Nurushev, S. B. ; Odyniec, G. ; Ogawa, A. ; Okada, H. ; Okorokov, V. ; Olson, D. ; Pachr, M. ; Page, B. S. ; Pal, S. K. ; Pandit, Y. ; Panebratsev, Y. ; Pawlak, T. ; Peitzmann, T. ; Perevoztchikov, V. ; Perkins, C. ; Peryt, W. ; Phatak, S. C. ; Pile, P. ; Planinic, M. ; Ploskon, M. A. ; Pluta, J. ; Plyku, D. ; Poljak, N. ; Poskanzer, A. M. ; Potukuchi, B. V K S ; Prindle, D. ; Pruneau, C. ; Pruthi, N. K. ; Pujahari, P. R. ; Putschke, J. ; Raniwala, R. ; Raniwala, S. ; Ray, R. L. ; Redwine, R. ; Reed, R. ; Ridiger, A. ; Ritter, H. G. ; Roberts, J. B. ; Rogachevskiy, O. V. ; Romero, J. L. ; Rose, A. ; Roy, C. ; Ruan, L. ; Russcher, M. J. ; Sahoo, R. ; Sakai, S. ; Sakrejda, I. ; Sakuma, T. ; Salur, S. ; Sandweiss, J. ; Sarsour, M. ; Schambach, J. ; Scharenberg, R. P. ; Schmitz, N. ; Seger, Janet E. ; Selyuzhenkov, I. ; Seyboth, P. ; Shabetai, A. ; Shahaliev, E. ; Shao, M. ; Sharma, M. ; Shi, S. S. ; Shi, X. H. ; Sichtermann, E. P. ; Simon, F. ; Singaraju, R. N. ; Skoby, M. J. ; Smirnov, N. ; Sorensen, P. ; Sowinski, J. ; Spinka, H. M. ; Srivastava, B. ; Stanislaus, T. D S ; Staszak, D. ; Strikhanov, M. ; Stringfellow, B. ; Suaide, A. A P ; Suarez, M. C. ; Subba, N. L. ; Sumbera, M. ; Sun, X. M. ; Sun, Y. ; Sun, Z. ; Surrow, B. ; Symons, T. J M ; Szanto de Toledo, A. ; Takahashi, J. ; Tang, A. H. ; Tang, Z. ; Tarini, L. H. ; Tarnowsky, T. ; Thein, D. ; Thomas, J. H. ; Tian, J. ; Timmins, A. R. ; Timoshenko, S. ; Tlusty, D. ; Tokarev, M. ; Trainor, T. A. ; Tram, V. N. ; Trattner, A. L. ; Trentalange, S. ; Tribble, R. E. ; Tsai, O. D. ; Ulery, J. ; Ullrich, T. ; Underwood, D. G. ; Van Buren, G. ; van Leeuwen, M. ; van Nieuwenhuizen, G. ; Vanfossen, J. A. ; Varma, R. ; Vasconcelos, G. M S ; Vasiliev, A. N. ; Videbaek, F. ; Vigdor, S. E. ; Viyogi, Y. P. ; Vokal, S. ; Voloshin, S. A. ; Wada, M. ; Walker, M. ; Wang, F. ; Wang, G. ; Wang, H. ; Wang, J. S. ; Wang, Q. ; Wang, X. ; Wang, X. L. ; Wang, Y. ; Webb, G. ; Webb, J. C. ; Westfall, G. D. ; Whitten, C. ; Wieman, H. ; Wissink, S. W. ; Witt, R. ; Wu, Y. ; Xie, W. ; Xu, N. ; Xu, Q. H. ; Xu, Y. ; Xu, Z. ; Yang, Y. ; Yepes, P. ; Yip, K. ; Yoo, I. K. ; Yue, Q. ; Zawisza, M. ; Zbroszczyk, H. ; Zhan, W. ; Zhang, S. ; Zhang, W. M. ; Zhang, X. P. ; Zhang, Y. ; Zhang, Z. P. ; Zhao, Y. ; Zhong, C. ; Zhou, J. ; Zhu, X. ; Zoulkarneev, R. ; Zoulkarneeva, Y. ; Zuo, J. X. / Center of mass energy and system-size dependence of photon production at forward rapidity at RHIC. In: Nuclear Physics A. 2010 ; Vol. 832, No. 1-2. pp. 134-147.
@article{c0a3a509a97c43958eba89179a44bd38,
title = "Center of mass energy and system-size dependence of photon production at forward rapidity at RHIC",
abstract = "We present the multiplicity and pseudorapidity distributions of photons produced in Au + Au and Cu + Cu collisions at sqrt(sNN) = 62.4 and 200 GeV. The photons are measured in the region - 3.7 <η <- 2.3 using the photon multiplicity detector in the STAR experiment at RHIC. The number of photons produced per average number of participating nucleon pairs increases with the beam energy and is independent of the collision centrality. For collisions with similar average numbers of participating nucleons the photon multiplicities are observed to be similar for Au + Au and Cu + Cu collisions at a given beam energy. The ratios of the number of charged particles to photons in the measured pseudorapidity range are found to be 1.4 ± 0.1 and 1.2 ± 0.1 for sqrt(sNN) = 62.4 and 200 GeV, respectively. The energy dependence of this ratio could reflect varying contributions from baryons to charged particles, while mesons are the dominant contributors to photon production in the given kinematic region. The photon pseudorapidity distributions normalized by average number of participating nucleon pairs, when plotted as a function of η - ybeam, are found to follow a longitudinal scaling independent of centrality and colliding ion species at both beam energies.",
author = "Abelev, {B. I.} and Aggarwal, {M. M.} and Z. Ahammed and Alakhverdyants, {A. V.} and Anderson, {B. D.} and D. Arkhipkin and Averichev, {G. S.} and Badyal, {S. K.} and J. Balewski and O. Barannikova and Barnby, {L. S.} and J. Baudot and S. Baumgart and Beavis, {D. R.} and R. Bellwied and F. Benedosso and Betancourt, {M. J.} and Betts, {R. R.} and A. Bhasin and Bhati, {A. K.} and H. Bichsel and J. Bielcik and J. Bielcikova and B. Biritz and Bland, {L. C.} and I. Bnzarov and M. Bombara and Bonner, {B. E.} and J. Bouchet and E. Braidot and Brandin, {A. V.} and E. Bruna and S. Bueltmann and Burton, {T. P.} and M. Bystersky and Cai, {X. Z.} and H. Caines and M. Calder{\'o}n and O. Catu and D. Cebra and R. Cendejas and Cervantes, {M. C.} and Z. Chajecki and P. Chaloupka and S. Chattopadhyay and Chen, {H. F.} and Chen, {J. H.} and Chen, {J. Y.} and J. Cheng and Cherney, {Michael G.} and A. Chikanian and Choi, {K. E.} and W. Christie and Clarke, {R. F.} and Codrington, {M. J M} and R. Corliss and Cormier, {T. M.} and Cosentino, {M. R.} and Cramer, {J. G.} and Crawford, {H. J.} and D. Das and S. Das and S. Dash and M. Daugherity and {De Silva}, {L. C.} and Dedovich, {T. G.} and M. DePhillips and Derevschikov, {A. A.} and {Derradi de Souza}, R. and L. Didenko and P. Djawotho and Dogra, {S. M.} and X. Dong and Drachenberg, {J. L.} and Draper, {J. E.} and Dunlop, {J. C.} and Mazumdar, {M. R Dutta} and Efimov, {L. G.} and E. Elhalhuli and M. Elnimr and J. Engelage and G. Eppley and B. Erazmus and M. Estienne and L. Eun and P. Fachini and R. Fatemi and J. Fedorisin and A. Feng and P. Filip and E. Finch and V. Fine and Y. Fisyak and Gagliardi, {C. A.} and L. Gaillard and Gangadharan, {D. R.} and Ganti, {M. S.} and Garcia-Solis, {E. J.} and A. Geromitsos and F. Geurts and V. Ghazikhanian and P. Ghosh and Gorbunov, {Y. N.} and A. Gordon and O. Grebenyuk and D. Grosnick and B. Grube and Guertin, {S. M.} and Guimaraes, {K. S F F} and A. Gupta and N. Gupta and W. Guryn and B. Haag and Hallman, {T. J.} and A. Hamed and Harris, {J. W.} and W. He and M. Heinz and S. Hepplemann and B. Hippolyte and A. Hirsch and E. Hjort and Hoffman, {A. M.} and Hoffmann, {G. W.} and Hofman, {D. J.} and Hollis, {R. S.} and Huang, {H. Z.} and Humanic, {T. J.} and L. Huo and G. Igo and A. Iordanova and P. Jacobs and Jacobs, {W. W.} and P. Jakl and C. Jena and F. Jin and Jones, {C. L.} and Jones, {P. G.} and J. Joseph and Judd, {E. G.} and S. Kabana and K. Kajimoto and K. Kang and J. Kapitan and K. Kauder and D. Keane and A. Kechechyan and D. Kettler and Khodyrev, {V. Yu} and Kikola, {D. P.} and J. Kiryluk and A. Kisiel and Klein, {S. R.} and Knospe, {A. G.} and A. Kocoloski and Koetke, {D. D.} and J. Konzer and M. Kopytine and I. Koralt and W. Korsch and L. Kotchenda and V. Kouchpil and P. Kravtsov and Kravtsov, {V. I.} and K. Krueger and M. Krus and C. Kuhn and L. Kumar and P. Kurnadi and Lamont, {M. A C} and Landgraf, {J. M.} and S. LaPointe and J. Lauret and A. Lebedev and R. Lednicky and Lee, {C. H.} and Lee, {J. H.} and W. Leight and LeVine, {M. J.} and C. Li and N. Li and Y. Li and G. Lin and Lindenbaum, {S. J.} and Lisa, {M. A.} and F. Liu and H. Liu and J. Liu and L. Liu and T. Ljubicic and Llope, {W. J.} and Longacre, {R. S.} and Love, {W. A.} and Y. Lu and T. Ludlam and Ma, {G. L.} and Ma, {Y. G.} and Mahapatra, {D. P.} and R. Majka and Mall, {O. I.} and Mangotra, {L. K.} and R. Manweiler and S. Margetis and C. Markert and H. Masui and Matis, {H. S.} and Matulenko, {Yu A.} and D. McDonald and McShane, {T. S.} and A. Meschanin and R. Millner and Minaev, {N. G.} and S. Mioduszewski and A. Mischke and B. Mohanty and Mondal, {M. M.} and Morozov, {D. A.} and Munhoz, {M. G.} and Nandi, {B. K.} and C. Nattrass and Nayak, {T. K.} and Nelson, {J. M.} and Netrakanti, {P. K.} and Ng, {M. J.} and Nogach, {L. V.} and Nurushev, {S. B.} and G. Odyniec and A. Ogawa and H. Okada and V. Okorokov and D. Olson and M. Pachr and Page, {B. S.} and Pal, {S. K.} and Y. Pandit and Y. Panebratsev and T. Pawlak and T. Peitzmann and V. Perevoztchikov and C. Perkins and W. Peryt and Phatak, {S. C.} and P. Pile and M. Planinic and Ploskon, {M. A.} and J. Pluta and D. Plyku and N. Poljak and Poskanzer, {A. M.} and Potukuchi, {B. V K S} and D. Prindle and C. Pruneau and Pruthi, {N. K.} and Pujahari, {P. R.} and J. Putschke and R. Raniwala and S. Raniwala and Ray, {R. L.} and R. Redwine and R. Reed and A. Ridiger and Ritter, {H. G.} and Roberts, {J. B.} and Rogachevskiy, {O. V.} and Romero, {J. L.} and A. Rose and C. Roy and L. Ruan and Russcher, {M. J.} and R. Sahoo and S. Sakai and I. Sakrejda and T. Sakuma and S. Salur and J. Sandweiss and M. Sarsour and J. Schambach and Scharenberg, {R. P.} and N. Schmitz and Seger, {Janet E.} and I. Selyuzhenkov and P. Seyboth and A. Shabetai and E. Shahaliev and M. Shao and M. Sharma and Shi, {S. S.} and Shi, {X. H.} and Sichtermann, {E. P.} and F. Simon and Singaraju, {R. N.} and Skoby, {M. J.} and N. Smirnov and P. Sorensen and J. Sowinski and Spinka, {H. M.} and B. Srivastava and Stanislaus, {T. D S} and D. Staszak and M. Strikhanov and B. Stringfellow and Suaide, {A. A P} and Suarez, {M. C.} and Subba, {N. L.} and M. Sumbera and Sun, {X. M.} and Y. Sun and Z. Sun and B. Surrow and Symons, {T. J M} and {Szanto de Toledo}, A. and J. Takahashi and Tang, {A. H.} and Z. Tang and Tarini, {L. H.} and T. Tarnowsky and D. Thein and Thomas, {J. H.} and J. Tian and Timmins, {A. R.} and S. Timoshenko and D. Tlusty and M. Tokarev and Trainor, {T. A.} and Tram, {V. N.} and Trattner, {A. L.} and S. Trentalange and Tribble, {R. E.} and Tsai, {O. D.} and J. Ulery and T. Ullrich and Underwood, {D. G.} and {Van Buren}, G. and {van Leeuwen}, M. and {van Nieuwenhuizen}, G. and Vanfossen, {J. A.} and R. Varma and Vasconcelos, {G. M S} and Vasiliev, {A. N.} and F. Videbaek and Vigdor, {S. E.} and Viyogi, {Y. P.} and S. Vokal and Voloshin, {S. A.} and M. Wada and M. Walker and F. Wang and G. Wang and H. Wang and Wang, {J. S.} and Q. Wang and X. Wang and Wang, {X. L.} and Y. Wang and G. Webb and Webb, {J. C.} and Westfall, {G. D.} and C. Whitten and H. Wieman and Wissink, {S. W.} and R. Witt and Y. Wu and W. Xie and N. Xu and Xu, {Q. H.} and Y. Xu and Z. Xu and Y. Yang and P. Yepes and K. Yip and Yoo, {I. K.} and Q. Yue and M. Zawisza and H. Zbroszczyk and W. Zhan and S. Zhang and Zhang, {W. M.} and Zhang, {X. P.} and Y. Zhang and Zhang, {Z. P.} and Y. Zhao and C. Zhong and J. Zhou and X. Zhu and R. Zoulkarneev and Y. Zoulkarneeva and Zuo, {J. X.}",
year = "2010",
month = "1",
day = "1",
doi = "10.1016/j.nuclphysa.2009.11.011",
language = "English",
volume = "832",
pages = "134--147",
journal = "Nuclear Physics A",
issn = "0375-9474",
publisher = "Elsevier",
number = "1-2",

}

TY - JOUR

T1 - Center of mass energy and system-size dependence of photon production at forward rapidity at RHIC

AU - Abelev, B. I.

AU - Aggarwal, M. M.

AU - Ahammed, Z.

AU - Alakhverdyants, A. V.

AU - Anderson, B. D.

AU - Arkhipkin, D.

AU - Averichev, G. S.

AU - Badyal, S. K.

AU - Balewski, J.

AU - Barannikova, O.

AU - Barnby, L. S.

AU - Baudot, J.

AU - Baumgart, S.

AU - Beavis, D. R.

AU - Bellwied, R.

AU - Benedosso, F.

AU - Betancourt, M. J.

AU - Betts, R. R.

AU - Bhasin, A.

AU - Bhati, A. K.

AU - Bichsel, H.

AU - Bielcik, J.

AU - Bielcikova, J.

AU - Biritz, B.

AU - Bland, L. C.

AU - Bnzarov, I.

AU - Bombara, M.

AU - Bonner, B. E.

AU - Bouchet, J.

AU - Braidot, E.

AU - Brandin, A. V.

AU - Bruna, E.

AU - Bueltmann, S.

AU - Burton, T. P.

AU - Bystersky, M.

AU - Cai, X. Z.

AU - Caines, H.

AU - Calderón, M.

AU - Catu, O.

AU - Cebra, D.

AU - Cendejas, R.

AU - Cervantes, M. C.

AU - Chajecki, Z.

AU - Chaloupka, P.

AU - Chattopadhyay, S.

AU - Chen, H. F.

AU - Chen, J. H.

AU - Chen, J. Y.

AU - Cheng, J.

AU - Cherney, Michael G.

AU - Chikanian, A.

AU - Choi, K. E.

AU - Christie, W.

AU - Clarke, R. F.

AU - Codrington, M. J M

AU - Corliss, R.

AU - Cormier, T. M.

AU - Cosentino, M. R.

AU - Cramer, J. G.

AU - Crawford, H. J.

AU - Das, D.

AU - Das, S.

AU - Dash, S.

AU - Daugherity, M.

AU - De Silva, L. C.

AU - Dedovich, T. G.

AU - DePhillips, M.

AU - Derevschikov, A. A.

AU - Derradi de Souza, R.

AU - Didenko, L.

AU - Djawotho, P.

AU - Dogra, S. M.

AU - Dong, X.

AU - Drachenberg, J. L.

AU - Draper, J. E.

AU - Dunlop, J. C.

AU - Mazumdar, M. R Dutta

AU - Efimov, L. G.

AU - Elhalhuli, E.

AU - Elnimr, M.

AU - Engelage, J.

AU - Eppley, G.

AU - Erazmus, B.

AU - Estienne, M.

AU - Eun, L.

AU - Fachini, P.

AU - Fatemi, R.

AU - Fedorisin, J.

AU - Feng, A.

AU - Filip, P.

AU - Finch, E.

AU - Fine, V.

AU - Fisyak, Y.

AU - Gagliardi, C. A.

AU - Gaillard, L.

AU - Gangadharan, D. R.

AU - Ganti, M. S.

AU - Garcia-Solis, E. J.

AU - Geromitsos, A.

AU - Geurts, F.

AU - Ghazikhanian, V.

AU - Ghosh, P.

AU - Gorbunov, Y. N.

AU - Gordon, A.

AU - Grebenyuk, O.

AU - Grosnick, D.

AU - Grube, B.

AU - Guertin, S. M.

AU - Guimaraes, K. S F F

AU - Gupta, A.

AU - Gupta, N.

AU - Guryn, W.

AU - Haag, B.

AU - Hallman, T. J.

AU - Hamed, A.

AU - Harris, J. W.

AU - He, W.

AU - Heinz, M.

AU - Hepplemann, S.

AU - Hippolyte, B.

AU - Hirsch, A.

AU - Hjort, E.

AU - Hoffman, A. M.

AU - Hoffmann, G. W.

AU - Hofman, D. J.

AU - Hollis, R. S.

AU - Huang, H. Z.

AU - Humanic, T. J.

AU - Huo, L.

AU - Igo, G.

AU - Iordanova, A.

AU - Jacobs, P.

AU - Jacobs, W. W.

AU - Jakl, P.

AU - Jena, C.

AU - Jin, F.

AU - Jones, C. L.

AU - Jones, P. G.

AU - Joseph, J.

AU - Judd, E. G.

AU - Kabana, S.

AU - Kajimoto, K.

AU - Kang, K.

AU - Kapitan, J.

AU - Kauder, K.

AU - Keane, D.

AU - Kechechyan, A.

AU - Kettler, D.

AU - Khodyrev, V. Yu

AU - Kikola, D. P.

AU - Kiryluk, J.

AU - Kisiel, A.

AU - Klein, S. R.

AU - Knospe, A. G.

AU - Kocoloski, A.

AU - Koetke, D. D.

AU - Konzer, J.

AU - Kopytine, M.

AU - Koralt, I.

AU - Korsch, W.

AU - Kotchenda, L.

AU - Kouchpil, V.

AU - Kravtsov, P.

AU - Kravtsov, V. I.

AU - Krueger, K.

AU - Krus, M.

AU - Kuhn, C.

AU - Kumar, L.

AU - Kurnadi, P.

AU - Lamont, M. A C

AU - Landgraf, J. M.

AU - LaPointe, S.

AU - Lauret, J.

AU - Lebedev, A.

AU - Lednicky, R.

AU - Lee, C. H.

AU - Lee, J. H.

AU - Leight, W.

AU - LeVine, M. J.

AU - Li, C.

AU - Li, N.

AU - Li, Y.

AU - Lin, G.

AU - Lindenbaum, S. J.

AU - Lisa, M. A.

AU - Liu, F.

AU - Liu, H.

AU - Liu, J.

AU - Liu, L.

AU - Ljubicic, T.

AU - Llope, W. J.

AU - Longacre, R. S.

AU - Love, W. A.

AU - Lu, Y.

AU - Ludlam, T.

AU - Ma, G. L.

AU - Ma, Y. G.

AU - Mahapatra, D. P.

AU - Majka, R.

AU - Mall, O. I.

AU - Mangotra, L. K.

AU - Manweiler, R.

AU - Margetis, S.

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PY - 2010/1/1

Y1 - 2010/1/1

N2 - We present the multiplicity and pseudorapidity distributions of photons produced in Au + Au and Cu + Cu collisions at sqrt(sNN) = 62.4 and 200 GeV. The photons are measured in the region - 3.7 <η <- 2.3 using the photon multiplicity detector in the STAR experiment at RHIC. The number of photons produced per average number of participating nucleon pairs increases with the beam energy and is independent of the collision centrality. For collisions with similar average numbers of participating nucleons the photon multiplicities are observed to be similar for Au + Au and Cu + Cu collisions at a given beam energy. The ratios of the number of charged particles to photons in the measured pseudorapidity range are found to be 1.4 ± 0.1 and 1.2 ± 0.1 for sqrt(sNN) = 62.4 and 200 GeV, respectively. The energy dependence of this ratio could reflect varying contributions from baryons to charged particles, while mesons are the dominant contributors to photon production in the given kinematic region. The photon pseudorapidity distributions normalized by average number of participating nucleon pairs, when plotted as a function of η - ybeam, are found to follow a longitudinal scaling independent of centrality and colliding ion species at both beam energies.

AB - We present the multiplicity and pseudorapidity distributions of photons produced in Au + Au and Cu + Cu collisions at sqrt(sNN) = 62.4 and 200 GeV. The photons are measured in the region - 3.7 <η <- 2.3 using the photon multiplicity detector in the STAR experiment at RHIC. The number of photons produced per average number of participating nucleon pairs increases with the beam energy and is independent of the collision centrality. For collisions with similar average numbers of participating nucleons the photon multiplicities are observed to be similar for Au + Au and Cu + Cu collisions at a given beam energy. The ratios of the number of charged particles to photons in the measured pseudorapidity range are found to be 1.4 ± 0.1 and 1.2 ± 0.1 for sqrt(sNN) = 62.4 and 200 GeV, respectively. The energy dependence of this ratio could reflect varying contributions from baryons to charged particles, while mesons are the dominant contributors to photon production in the given kinematic region. The photon pseudorapidity distributions normalized by average number of participating nucleon pairs, when plotted as a function of η - ybeam, are found to follow a longitudinal scaling independent of centrality and colliding ion species at both beam energies.

UR - http://www.scopus.com/inward/record.url?scp=73349096580&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=73349096580&partnerID=8YFLogxK

U2 - 10.1016/j.nuclphysa.2009.11.011

DO - 10.1016/j.nuclphysa.2009.11.011

M3 - Article

AN - SCOPUS:73349096580

VL - 832

SP - 134

EP - 147

JO - Nuclear Physics A

JF - Nuclear Physics A

SN - 0375-9474

IS - 1-2

ER -

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