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| 題名: | Ground and excited state charmonium production in p+p collisions at √s=200GeV |
| 作者: | 彭仁傑;Aidala, C.;Ajitanand, N. N.;Al-Bataineh, H.;Awes, T. C.;Baldisseri, A.;Barnes, P. D.;Belikov, S.;Belmont, R.;Berdnikov, A.;Berdnikov, Y.;Bickley, A. A.;Boissevain, J. G.;Borel, H.;Bumazhnov, V.;Chang, B. S.;Chang, W. C.;Chi, C. Y.;Choi, I. J.;Choi, J. B.;Das, K.;Denisov, A.;d’Enterria, D.;Deshpande, A.;Dietzsch, O.;Drapier, O.;Drees, K. A.;Dzhordzhadze, V.;Eyser, K. O.;Franz, A.;Fukao, Y.;Gong, H.;Cassagnac, R. Granier de;Grim, G.;Perdekamp, M. Grosse;Gunji, T.;Hahn, K. I.;Hamagaki, H.;Hemmick, T. K.;Holzmann, W.;Ikeda, Y.;Imai, K.;Jin, J.;Johnson, B. M.;Kamin, J.;Kasai, M.;Kozlov, A.;Kunde, G. J.;Kurosawa, M.;Kwon, Y.;Liebing, P.;Love, B.;Lynch, D.;Makdisi, Y. I.;Matathias, F.;Mignerey, A. C.;Mikeš, P.;Morreale, A.;Morrison, D. P.;Nagle, J. L.;Nakagawa, I.;Ogilvie, C. A.;Ozawa, K.;Palounek, A. P. T.;Papavassiliou, V.;Park, W. J.;Pate, S. F.;Pei, H.;Pinkenburg, C.;Pisani, R. P.;Proissl, M.;Purwar, A. K.;Riabov, V.;Richardson, E.;Roach, D.;Rukoyatkin, P.;Ružička, P.;Saito, N.;Sakaguchi, T.;Sato, T.;Sawada, S.;Semenov, A. Yu.;Sim, K. S.;Slunečka, M.;Staley, F.;Ster, A.;Stoll, S. P.;Tanabe, R.;Taneja, S.;Tanida, K.;Tannenbaum, M. J.;Toia, A.;Torii, H.;Tsuchimoto, Y.;Vale, C.;Wei, R.;Winter, D.;Woody, C. L.;Xie, W.;Yamaguchi, Y. L.;Zhang, C. |
| 貢獻者: | 高能與強場物理研究中心 |
| 日期: | 2012-05-09 |
| 上傳時間: | 2026-04-23 12:02:07 (UTC+8) |
| 出版者: | American Physical Society;American Physical Society (APS) |
| 摘要: | 摘要： We report on charmonium measurements [J/psi (1S), psi' (2S), and chi(c) (1P)] in p + p collisions at root s = 200 GeV. We find that the fraction of J/psi coming from the feed-down decay of psi' and chi(c) in the midrapidity region (vertical bar y vertical bar < 0: 35) is 9.6 +/- 2.4% and 32 +/- 9%, respectively. We also present the p(T) and rapidity dependencies of the J/psi yield measured via dielectron decay at midrapidity (vertical bar y vertical bar < 0.35) and via dimuon decay at forward rapidity (1.2 < vertical bar y vertical bar < 2.2). The statistical precision greatly exceeds that reported in our previous publication [Phys. Rev. Lett. 98, 232002 (2007)]. The new results are compared with other experiments and discussed in the context of current charmonium production models.
出版者： American Physical Society (APS)
出版日期： 2012-05-09
出處： Physical Review D, 2012-05, Vol.85 (9)
識別號： ISSN: 1550-7998
識別號： DOI: 10.1103/physrevd.85.092004 |
| 顯示於類別: | [高能與強場物理研究中心] 期刊論文
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