Cross sections and transverse single-spin asymmetries in forward neutral-pion production from proton collisions at sqrt[s]=200 GeV. uri icon

abstract

  • Measurements of the production of forward high-energy pi(0) mesons from transversely polarized proton collisions at sqrt[s]=200 GeV are reported. The cross section is generally consistent with next-to-leading order perturbative QCD calculations. The analyzing power is small at x(F) below about 0.3, and becomes positive and large at higher x(F), similar to the trend in data at sqrt[s]< or =20 GeV. The analyzing power is in qualitative agreement with perturbative QCD model expectations. This is the first significant spin result seen for particles produced with p(T)>1 GeV/c at a polarized proton collider.

published proceedings

  • Phys Rev Lett

author list (cited authors)

  • Adams, J., Adler, C., Aggarwal, M. M., Ahammed, Z., Amonett, J., Anderson, B. D., ... STAR Collaboration.

citation count

  • 215

complete list of authors

  • Adams, J||Adler, C||Aggarwal, MM||Ahammed, Z||Amonett, J||Anderson, BD||Anderson, M||Arkhipkin, D||Averichev, GS||Badyal, SK||Balewski, J||Barannikova, O||Barnby, LS||Baudot, J||Bekele, S||Belaga, VV||Bellwied, R||Berger, J||Bezverkhny, BI||Bhardwaj, S||Bhaskar, P||Bhati, AK||Bichsel, H||Billmeier, A||Bland, LC||Blyth, CO||Bonner, BE||Botje, M||Boucham, A||Brandin, A||Bravar, A||Cadman, RV||Cai, XZ||Caines, H||Calderón de la Barca Sánchez, M||Carroll, J||Castillo, J||Castro, M||Cebra, D||Chaloupka, P||Chattopadhyay, S||Chen, HF||Chen, Y||Chernenko, SP||Cherney, M||Chikanian, A||Choi, B||Christie, W||Coffin, JP||Cormier, TM||Cramer, JG||Crawford, HJ||Das, D||Das, S||Derevschikov, AA||Didenko, L||Dietel, T||Dong, WJ||Dong, X||Draper, JE||Du, F||Dubey, AK||Dunin, VB||Dunlop, JC||Dutta Majumdar, MR||Eckardt, V||Efimov, LG||Emelianov, V||Engelage, J||Eppley, G||Erazmus, B||Estienne, M||Fachini, P||Faine, V||Faivre, J||Fatemi, R||Filimonov, K||Filip, P||Finch, E||Fisyak, Y||Flierl, D||Foley, KJ||Fu, J||Gagliardi, CA||Gagunashvili, N||Gans, J||Ganti, MS||Gaudichet, L||Germain, M||Geurts, F||Ghazikhanian, V||Ghosh, P||Gonzalez, JE||Grachov, O||Grigoriev, V||Gronstal, S||Grosnick, D||Guedon, M||Guertin, SM||Gupta, A||Gushin, E||Gutierrez, TD||Hallman, TJ||Hardtke, D||Harris, JW||Heinz, M||Henry, TW||Heppelmann, S||Herston, T||Hippolyte, B||Hirsch, A||Hjort, E||Hoffmann, GW||Horsley, M||Huang, HZ||Huang, SL||Humanic, TJ||Igo, G||Ishihara, A||Jacobs, P||Jacobs, WW||Janik, M||Jiang, H||Johnson, I||Jones, PG||Judd, EG||Kabana, S||Kaneta, M||Kaplan, M||Keane, D||Khodyrev, V Yu||Kiryluk, J||Kisiel, A||Klay, J||Klein, SR||Klyachko, A||Koetke, DD||Kollegger, T||Kopytine, M||Kotchenda, L||Kovalenko, AD||Kramer, M||Kravtsov, P||Kravtsov, VI||Krueger, K||Kuhn, C||Kulikov, AI||Kumar, A||Kunde, GJ||Kunz, CL||Kutuev, R Kh||Kuznetsov, AA||Lamont, MAC||Landgraf, JM||Lange, S||Lansdell, CP||Lasiuk, B||Laue, F||Lauret, J||Lebedev, A||Lednický, R||LeVine, MJ||Li, C||Li, Q||Lindenbaum, SJ||Lisa, MA||Liu, F||Liu, L||Liu, Z||Liu, QJ||Ljubicic, T||Llope, WJ||Long, H||Longacre, RS||Lopez-Noriega, M||Love, WA||Ludlam, T||Lynn, D||Ma, J||Ma, YG||Magestro, D||Mahajan, S||Mangotra, LK||Mahapatra, DP||Majka, R||Manweiler, R||Margetis, S||Markert, C||Martin, L||Marx, J||Matis, HS||Matulenko, Yu A||McShane, TS||Meissner, F||Melnick, Yu||Meschanin, A||Messer, M||Miller, ML||Milosevich, Z||Minaev, NG||Mironov, C||Mishra, D||Mitchell, J||Mohanty, B||Molnar, L||Moore, CF||Mora-Corral, MJ||Morozov, DA||Morozov, V||de Moura, MM||Munhoz, MG||Nandi, BK||Nayak, SK||Nayak, TK||Nelson, JM||Nevski, P||Nikitin, VA||Nogach, LV||Norman, B||Nurushev, SB||Odyniec, G||Ogawa, A||Okorokov, V||Oldenburg, M||Olson, D||Paic, G||Pandey, SU||Pal, SK||Panebratsev, Y||Panitkin, SY||Pavlinov, AI||Pawlak, T||Perevoztchikov, V||Perkins, C||Peryt, W||Petrov, VA||Phatak, SC||Picha, R||Planinic, M||Pluta, J||Porile, N||Porter, J||Poskanzer, AM||Potekhin, M||Potrebenikova, E||Potukuchi, BVKS||Prindle, D||Pruneau, C||Putschke, J||Rai, G||Rakness, G||Raniwala, R||Raniwala, S||Ravel, O||Ray, RL||Razin, SV||Reichhold, D||Reid, JG||Renault, G||Retiere, F||Ridiger, A||Ritter, HG||Roberts, JB||Rogachevski, OV||Romero, JL||Rose, A||Roy, C||Ruan, LJ||Sahoo, R||Sakrejda, I||Salur, S||Sandweiss, J||Savin, I||Schambach, J||Scharenberg, RP||Schmitz, N||Schroeder, LS||Schweda, K||Seger, J||Seliverstov, D||Seyboth, P||Shahaliev, E||Shao, M||Sharma, M||Shestermanov, KE||Shimanskii, SS||Singaraju, RN||Simon, F||Skoro, G||Smirnov, N||Snellings, R||Sood, G||Sorensen, P||Sowinski, J||Spinka, HM||Srivastava, B||Stanislaus, S||Stock, R||Stolpovsky, A||Strikhanov, M||Stringfellow, B||Struck, C||Suaide, AAP||Sugarbaker, E||Suire, C||Sumbera, M||Surrow, B||Symons, TJM||Szanto de Toledo, A||Szarwas, P||Tai, A||Takahashi, J||Tang, AH||Thein, D||Thomas, JH||Tikhomirov, V||Tokarev, M||Tonjes, MB||Trainor, TA||Trentalange, S||Tribble, RE||Trivedi, MD||Trofimov, V||Tsai, O||Ullrich, T||Underwood, DG||Van Buren, G||VanderMolen, AM||Vasiliev, AN||Vasiliev, M||Vigdor, SE||Viyogi, YP||Voloshin, SA||Waggoner, W||Wang, F||Wang, G||Wang, XL||Wang, ZM||Ward, H||Watson, JW||Wells, R||Westfall, GD||Whitten, C||Wieman, H||Willson, R||Wissink, SW||Witt, R||Wood, J||Wu, J||Xu, N||Xu, Z||Xu, ZZ||Yamamoto, E||Yepes, P||Yurevich, VI||Zanevski, YV||Zborovský, I||Zhang, H||Zhang, WM||Zhang, ZP||Zołnierczuk, PA||Zoulkarneev, R||Zoulkarneeva, J||Zubarev, AN

publication date

  • April 2004