/ Experiment-HEP arXiv:0912.2082


Transverse momentum dependence of J/psi polarization at midrapidity in p+p collisions at s**(1/2) = 200-GeV


Adare, A. (Colorado U.) ; Afanasiev, S. (Dubna, JINR) ; Aidala, C. (Massachusetts U., Amherst) ; Ajitanand, N.N. (SUNY, Stony Brook, Chem. Dept.) ; Akiba, Y. (RIKEN BNL) ; Al-Bataineh, H. (New Mexico State U.) ; Alexander, J. (SUNY, Stony Brook, Chem. Dept.) ; Aoki, K. (Wako, RIKEN) ; Aphecetche, L. (SUBATECH, Nantes) ; Asai, J. (Wako, RIKEN) ; Atomssa, E.T. (Ecole Polytechnique) ; Averbeck, R. (SUNY, Stony Brook) ; Awes, T.C. (Oak Ridge) ; Azmoun, B. (Brookhaven) ; Babintsev, V. (Serpukhov, IHEP) ; Bai, M. (BNL, C-A Dept.) ; Baksay, G. (Florida Inst. Tech.) ; Baksay, L. (Florida Inst. Tech.) ; Baldisseri, A. (DAPNIA, Saclay) ; Barish, K.N. (UC, Riverside) ; Barnes, P.D. (Los Alamos) ; Bassalleck, B. (New Mexico U.) ; Basye, A.T. (Abilene Christian U.) ; Bathe, S. (UC, Riverside) ; Batsouli, S. (Oak Ridge) ; Baublis, V. (St. Petersburg, INP) ; Baumann, C. (Munster U.) ; Bazilevsky, A. (Brookhaven) ; Belikov, S. (Brookhaven) ; Bennett, R. (SUNY, Stony Brook) ; Berdnikov, A. (St. Petersburg Polytechnic Inst.) ; Berdnikov, Y. (St. Petersburg Polytechnic Inst.) ; Bickley, A.A. (Colorado U.) ; Boissevain, J.G. (Los Alamos) ; Borel, H. (DAPNIA, Saclay) ; Boyle, K. (SUNY, Stony Brook) ; Brooks, M.L. (Los Alamos) ; Buesching, H. (Brookhaven) ; Bumazhnov, V. (Serpukhov, IHEP) ; Bunce, G. (RIKEN BNL) ; Butsyk, S. (Los Alamos) ; Camacho, C.M. (Los Alamos) ; Campbell, S. (SUNY, Stony Brook) ; Chang, B.S. (IPAP, Seoul) ; Chang, W.C. (Taiwan, Inst. Phys.) ; Charvet, J.-L. (DAPNIA, Saclay) ; Chernichenko, S. (Serpukhov, IHEP) ; Chi, C.Y. (Nevis Labs, Columbia U.) ; Chiu, M. (Illinois U., Urbana) ; Choi, I.J. (IPAP, Seoul) ; Choudhury, R.K. (Bhabha Atomic Res. Ctr.) ; Chujo, T. (Tsukuba U.) ; Chung, P. (SUNY, Stony Brook, Chem. Dept.) ; Churyn, A. (Serpukhov, IHEP) ; Cianciolo, V. (Oak Ridge) ; Citron, Z. (SUNY, Stony Brook) ; Cole, B.A. (Nevis Labs, Columbia U.) ; Conesa del Valle, Z. (Ecole Polytechnique) ; Constantin, P. (Los Alamos) ; Csanad, M. (Eotvos U.) ; Csorgo, T. (Budapest, RMKI) ; Dahms, T. (SUNY, Stony Brook) ; Dairaku, S. (Wako, RIKEN) ; Das, K. (Florida State U.) ; David, G. (Brookhaven) ; Denisov, A. (Serpukhov, IHEP) ; d'Enterria, D. (Ecole Polytechnique) ; Deshpande, A. (SUNY, Stony Brook) ; Desmond, E.J. (Brookhaven) ; Dietzsch, O. (Sao Paulo U.) ; Dion, A. (SUNY, Stony Brook) ; Donadelli, M. (Sao Paulo U.) ; Drapier, O. (Ecole Polytechnique) ; Drees, A. (SUNY, Stony Brook) ; Drees, K.A. (BNL, C-A Dept.) ; Dubey, A.K. (Weizmann Inst.) ; Durum, A. (Serpukhov, IHEP) ; Dutta, D. (Bhabha Atomic Res. Ctr.) ; Dzhordzhadze, V. (UC, Riverside) ; Efremenko, Y.V. (Oak Ridge) ; Ellinghaus, F. (Colorado U.) ; Engelmore, T. (Nevis Labs, Columbia U.) ; Enokizono, A. (LLNL, Livermore) ; En'yo, H. (RIKEN BNL) ; Esumi, S. (Tsukuba U.) ; Eyser, K.O. (UC, Riverside) ; Fadem, B. (Muhlenberg Coll.) ; Fields, D.E. (RIKEN BNL) ; Finger, M., Jr. (Charles U.) ; Finger, M. (Charles U.) ; Fleuret, F. (Ecole Polytechnique) ; Fokin, S.L. (Kurchatov Inst., Moscow) ; Fraenkel, Z. (Weizmann Inst.) ; Frantz, J.E. (SUNY, Stony Brook) ; Franz, A. (Brookhaven) ; Frawley, A.D. (Florida State U.) ; Fujiwara, K. (Wako, RIKEN) ; Fukao, Y. (Wako, RIKEN) ; Fusayasu, T. (Nagasaki Inst. Appl. Sci.) ; Garishvili, I. (Tennessee U.) ; Glenn, A. (Colorado U.) ; Gong, H. (SUNY, Stony Brook) ; Gonin, M. (Ecole Polytechnique) ; Gosset, J. (DAPNIA, Saclay) ; Goto, Y. (RIKEN BNL) ; Granier de Cassagnac, R. (Ecole Polytechnique) ; Grau, N. (Nevis Labs, Columbia U.) ; Greene, S.V. (Vanderbilt U.) ; Grosse Perdekamp, M. (RIKEN BNL) ; Gunji, T. (Tokyo U., CNS) ; Gustafsson, H.-A. (Lund U.) ; Hadj Henni, A. (SUBATECH, Nantes) ; Haggerty, J.S. (Brookhaven) ; Hamagaki, H. (Tokyo U., CNS) ; Han, R. (Peking U.) ; Hartouni, Edward P. (LLNL, Livermore) ; Haruna, K. (Hiroshima U.) ; Haslum, E. (Lund U.) ; Hayano, R. (Tokyo U., CNS) ; Heffner, M. (LLNL, Livermore) ; Hemmick, T.K. (SUNY, Stony Brook) ; Hester, T. (UC, Riverside) ; He, X. (Georgia State U.) ; Hill, J.C. (Iowa State U.) ; Hohlmann, M. (Florida Inst. Tech.) ; Holzmann, W. (SUNY, Stony Brook, Chem. Dept.) ; Homma, K. (Hiroshima U.) ; Hong, B. (Korea U.) ; Horaguchi, T. (Tokyo Inst. Tech.) ; Hornback, D. (Tennessee U.) ; Huang, S. (Vanderbilt U.) ; Ichihara, T. (RIKEN BNL) ; Ichimiya, R. (Wako, RIKEN) ; Ikeda, Y. (Tsukuba U.) ; Imai, K. (Wako, RIKEN) ; Imrek, J. (Debrecen U.) ; Inaba, M. (Tsukuba U.) ; Isenhower, D. (Abilene Christian U.) ; Ishihara, M. (Wako, RIKEN) ; Isobe, T. (Tokyo U., CNS) ; Issah, M. (SUNY, Stony Brook, Chem. Dept.) ; Isupov, A. (Dubna, JINR) ; Ivanischev, D. (St. Petersburg, INP) ; Jacak, B.V. (SUNY, Stony Brook) ; Jia, J. (Nevis Labs, Columbia U.) ; Jin, J. (Nevis Labs, Columbia U.) ; Johnson, B.M. (Brookhaven) ; Joo, K.S. (Myong Ji U.) ; Jouan, D. (Orsay, IPN) ; Kajihara, F. (Tokyo U., CNS) ; Kametani, S. (Waseda U., RISE) ; Kamihara, N. (RIKEN BNL) ; Kamin, J. (SUNY, Stony Brook) ; Kang, J.H. (IPAP, Seoul) ; Kapustinsky, J. (Los Alamos) ; Kawall, D. (RIKEN BNL) ; Kazantsev, A.V. (Kurchatov Inst., Moscow) ; Kempel, T. (Iowa State U.) ; Khanzadeev, A. (St. Petersburg, INP) ; Kijima, K.M. (Hiroshima U.) ; Kikuchi, J. (Waseda U., RISE) ; Kim, B.I. (Korea U.) ; Kim, D.H. (Myong Ji U.) ; Kim, D.J. (IPAP, Seoul) ; Kim, E. (Seoul Natl. U.) ; Kim, S.H. (IPAP, Seoul) ; Kinney, E. (Colorado U.) ; Kiriluk, K. (Colorado U.) ; Kiss, A. (Eotvos U.) ; Kistenev, E. (Brookhaven) ; Klay, J. (LLNL, Livermore) ; Klein-Boesing, Christian (Munster U.) ; Kochenda, L. (St. Petersburg, INP) ; Komkov, B. (St. Petersburg, INP) ; Konno, M. (Tsukuba U.) ; Koster, J. (Illinois U., Urbana) ; Kozlov, A. (Weizmann Inst.) ; Kral, A. (Prague, Tech. U.) ; Kravitz, A. (Nevis Labs, Columbia U.) ; Kunde, G.J. (Los Alamos) ; Kurita, K. (Wako, RIKEN) ; Kurosawa, M. (Wako, RIKEN) ; Kweon, M.J. (Korea U.) ; Kwon, Y. (Tennessee U.) ; Kyle, G.S. (New Mexico State U.) ; Lacey, R. (SUNY, Stony Brook, Chem. Dept.) ; Lai, Y.-S. (Nevis Labs, Columbia U.) ; Lajoie, J.G. (Iowa State U.) ; Layton, D. (Illinois U., Urbana) ; Lebedev, A. (Iowa State U.) ; Lee, D.M. (Los Alamos) ; Lee, K.B. (Korea U.) ; Lee, T. (Seoul Natl. U.) ; Leitch, M.J. (Los Alamos) ; Leite, M.A.L. (Sao Paulo U.) ; Lenzi, B. (Sao Paulo U.) ; Liebing, P. (RIKEN BNL) ; Liska, T. (Prague, Tech. U.) ; Litvinenko, A. (Dubna, JINR) ; Liu, H. (New Mexico State U.) ; Liu, M.X. (Los Alamos) ; Li, X. (Beijing, Inst. Atomic Energy) ; Love, B. (Vanderbilt U.) ; Lynch, D. (Brookhaven) ; Maguire, C.F. (Vanderbilt U.) ; Makdisi, Y.I. (BNL, C-A Dept.) ; Malakhov, A. (Dubna, JINR) ; Malik, M.D. (New Mexico U.) ; Manko, V.I. (Kurchatov Inst., Moscow) ; Mannel, E. (Nevis Labs, Columbia U.) ; Mao, Y. (Wako, RIKEN) ; Masek, L. (Prague, Inst. Phys.) ; Masui, H. (Tsukuba U.) ; Matathias, F. (Nevis Labs, Columbia U.) ; McCumber, M. (SUNY, Stony Brook) ; McGaughey, P.L. (Los Alamos) ; Means, N. (SUNY, Stony Brook) ; Meredith, B. (Illinois U., Urbana) ; Miake, Y. (Tsukuba U.) ; Mikes, P. (Prague, Inst. Phys.) ; Miki, K. (Tsukuba U.) ; Milov, A. (Brookhaven) ; Mishra, M. (Banaras Hindu U.) ; Mitchell, J.T. (Brookhaven) ; Mohanty, A.K. (Bhabha Atomic Res. Ctr.) ; Morino, Y. (Tokyo U., CNS) ; Morreale, A. (UC, Riverside) ; Morrison, D.P. (Brookhaven) ; Moukhanova, T.V. (Kurchatov Inst., Moscow) ; Mukhopadhyay, D. (Vanderbilt U.) ; Murata, J. (Wako, RIKEN) ; Nagamiya, S. (KEK, Tsukuba) ; Nagle, J.L. (Colorado U.) ; Naglis, M. (Weizmann Inst.) ; Nagy, M.I. (Eotvos U.) ; Nakagawa, I. (RIKEN BNL) ; Nakamiya, Y. (Hiroshima U.) ; Nakamura, T. (Hiroshima U.) ; Nakano, K. (Tokyo Inst. Tech.) ; Newby, J. (LLNL, Livermore) ; Nguyen, M. (SUNY, Stony Brook) ; Niita, T. (Tsukuba U.) ; Nouicer, R. (Brookhaven) ; Nyanin, A.S. (Kurchatov Inst., Moscow) ; O'Brien, E. (Brookhaven) ; Oda, S.X. (Tokyo U., CNS) ; Ogilvie, C.A. (Iowa State U.) ; Okada, H. (Wako, RIKEN) ; Okada, K. (RIKEN BNL) ; Oka, M. (Tsukuba U.) ; Onuki, Y. (Wako, RIKEN) ; Oskarsson, A. (Lund U.) ; Ouchida, M. (Hiroshima U.) ; Ozawa, K. (Tokyo U., CNS) ; Pak, R. (Brookhaven) ; Palounek, A.P.T. (Los Alamos) ; Pantuev, V. (SUNY, Stony Brook) ; Papavassiliou, V. (New Mexico State U.) ; Park, J. (Seoul Natl. U.) ; Park, W.J. (Korea U.) ; Pate, S.F. (New Mexico State U.) ; Pei, H. (Iowa State U.) ; Peng, J.-C. (Illinois U., Urbana) ; Pereira, H. (DAPNIA, Saclay) ; Peresedov, V. (Dubna, JINR) ; Peressounko, D.Yu. (Kurchatov Inst., Moscow) ; Pinkenburg, C. (Brookhaven) ; Purschke, M.L. (Brookhaven) ; Purwar, A.K. (Los Alamos) ; Qu, H. (Georgia State U.) ; Rak, J. (New Mexico U.) ; Rakotozafindrabe, A. (Ecole Polytechnique) ; Ravinovich, I. (Weizmann Inst.) ; Read, K.F. (Tennessee U.) ; Rembeczki, S. (Florida Inst. Tech.) ; Reygers, K. (Munster U.) ; Riabov, V. (St. Petersburg, INP) ; Riabov, Y. (St. Petersburg, INP) ; Roach, D. (Vanderbilt U.) ; Roche, G. (Clermont-Ferrand U.) ; Rolnick, S.D. (UC, Riverside) ; Rosati, M. (Iowa State U.) ; Rosendahl, S.S.E. (Lund U.) ; Rosnet, P. (Clermont-Ferrand U.) ; Rukoyatkin, P. (Dubna, JINR) ; Ruzicka, P. (Prague, Inst. Phys.) ; Rykov, V.L. (Wako, RIKEN) ; Sahlmueller, B. (Munster U.) ; Saito, N. (RIKEN BNL) ; Sakaguchi, T. (Brookhaven) ; Sakai, S. (Tsukuba U.) ; Sakashita, K. (Tokyo Inst. Tech.) ; Samsonov, V. (St. Petersburg, INP) ; Sato, T. (Tsukuba U.) ; Sawada, S. (KEK, Tsukuba) ; Sedgwick, K. (UC, Riverside) ; Seele, J. (Colorado U.) ; Seidl, R. (Illinois U., Urbana) ; Semenov, A.Yu. (Iowa State U.) ; Semenov, V. (Serpukhov, IHEP) ; Seto, R. (UC, Riverside) ; Sharma, D. (Weizmann Inst.) ; Shein, I. (Serpukhov, IHEP) ; Shibata, T.-A. (Tokyo Inst. Tech.) ; Shigaki, K. (Hiroshima U.) ; Shimomura, M. (Tsukuba U.) ; Shoji, K. (Wako, RIKEN) ; Shukla, P. (Bhabha Atomic Res. Ctr.) ; Sickles, A. (Brookhaven) ; Silva, C.L. (Sao Paulo U.) ; Silvermyr, D. (Oak Ridge) ; Silvestre, C. (DAPNIA, Saclay) ; Sim, K.S. (Korea U.) ; Singh, B.K. (Banaras Hindu U.) ; Singh, C.P. (Banaras Hindu U.) ; Singh, V. (Banaras Hindu U.) ; Slunecka, M. (Charles U.) ; Soldatov, A. (Serpukhov, IHEP) ; Soltz, R.A. (LLNL, Livermore) ; Sondheim, W.E. (Los Alamos) ; Sorensen, S.P. (Tennessee U.) ; Sourikova, I.V. (Brookhaven) ; Staley, F. (DAPNIA, Saclay) ; Stankus, P.W. (Oak Ridge) ; Stenlund, E. (Lund U.) ; Stepanov, M. (New Mexico State U.) ; Ster, A. (Budapest, RMKI) ; Stoll, S.P. (Brookhaven) ; Sugitate, T. (Hiroshima U.) ; Suire, C. (Orsay, IPN) ; Sukhanov, A. (Brookhaven) ; Sziklai, J. (Budapest, RMKI) ; Takagui, E.M. (Sao Paulo U.) ; Taketani, A. (RIKEN BNL) ; Tanabe, R. (Tsukuba U.) ; Tanaka, Y. (Nagasaki Inst. Appl. Sci.) ; Tanida, K. (RIKEN BNL) ; Tannenbaum, M.J. (Brookhaven) ; Taranenko, A. (SUNY, Stony Brook, Chem. Dept.) ; Tarjan, P. (Debrecen U.) ; Themann, H. (SUNY, Stony Brook) ; Thomas, T.L. (New Mexico U.) ; Togawa, M. (Wako, RIKEN) ; Toia, A. (SUNY, Stony Brook) ; Tomasek, L. (Prague, Inst. Phys.) ; Tomita, Y. (Tsukuba U.) ; Torii, H. (Wako, RIKEN) ; Towell, R.S. (Abilene Christian U.) ; Tram, V-N. (Ecole Polytechnique) ; Tserruya, I. (Weizmann Inst.) ; Tsuchimoto, Y. (Hiroshima U.) ; Vale, C. (Iowa State U.) ; Valle, H. (Vanderbilt U.) ; van Hecke, H.W. (Los Alamos) ; Veicht, A. (Illinois U., Urbana) ; Velkovska, J. (Vanderbilt U.) ; Vertesi, R. (Debrecen U.) ; Vinogradov, A.A. (Kurchatov Inst., Moscow) ; Virius, M. (Prague, Tech. U.) ; Vrba, V. (Prague, Inst. Phys.) ; Vznuzdaev, E. (St. Petersburg, INP) ; Wang, X.R. (New Mexico State U.) ; Watanabe, Y. (RIKEN BNL) ; Wei, F. (Iowa State U.) ; Wessels, J. (Munster U.) ; White, S.N. (Brookhaven) ; Winter, D. (Nevis Labs, Columbia U.) ; Woody, C.L. (Brookhaven) ; Wysocki, M. (Colorado U.) ; Xie, W. (RIKEN BNL) ; Yamaguchi, Y.L. (Waseda U., RISE) ; Yamaura, K. (Hiroshima U.) ; Yang, R. (Illinois U., Urbana) ; Yanovich, A. (Serpukhov, IHEP) ; Ying, J. (Georgia State U.) ; Yokkaichi, S. (RIKEN BNL) ; Young, G.R. (Oak Ridge) ; Younus, I. (New Mexico U.) ; Yushmanov, I.E. (Kurchatov Inst., Moscow) ; Zajc, W.A. (Nevis Labs, Columbia U.) ; Zaudtke, O. (Munster U.) ; Zhang, C. (Oak Ridge) ; Zhou, S. (Beijing, Inst. Atomic Energy) ; Zolin, L. (Dubna, JINR)

Published in: Phys.Rev.
Year: 2010
Vol.: D82
Page No: 012001
Pages: 17

Abstract: We report the measurement of the transverse momentum dependence of inclusive J/psi polarization in p+p collisions at sqrt(s)=200 GeV performed by the PHENIX Experiment at RHIC. The polarization is studied in the helicity, Gottfried-Jackson, and Collins-Soper frames for p_T < 5 GeV/c and |y| < 0.35. The J/psi polarization in the helicity and Gottfried-Jackson frames is consistent with zero for all transverse momenta, with a slight (1.8 sigma) trend towards longitudinal polarization for transverse momenta above 2 GeV/c. No conclusion is allowed due to the limited acceptance in the Collins-Soper frame and the uncertainties of the current data. The results are compared to observations for other collision systems and center of mass energies and to different quarkonia production models.

Web-Page: http://inspirebeta.net/record/839540/files/acceptance_zed.png; http://inspirebeta.net/record/839540/files/costheta_01.png; http://inspirebeta.net/record/839540/files/costheta_01_GJ.png; http://inspirebeta.net/record/839540/files/costheta_12.png; http://inspirebeta.net/record/839540/files/costheta_12_GJ.png; http://inspirebeta.net/record/839540/files/costheta_25.png; http://inspirebeta.net/record/839540/files/costheta_25_GJ.png; http://inspirebeta.net/record/839540/files/costheta_CS.png; http://inspirebeta.net/record/839540/files/eid_eff.png; http://inspirebeta.net/record/839540/files/frames.png; http://inspirebeta.net/record/839540/files/jpsi_fit.png; http://inspirebeta.net/record/839540/files/pol_herab_e866_phenix.png; http://inspirebeta.net/record/839540/files/pol_pt.png; http://inspirebeta.net/record/839540/files/pol_pt_GJ.png

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