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| 題名: | Cross sections and double-helicity asymmetries of midrapidity inclusive charged hadrons in p+p collisions at √s=62.4GeV |
| 作者: | 彭仁傑;Al-Bataineh, H.;Aoki, K.;Asai, J.;Barish, K. N.;Batsouli, S.;Baumann, C.;Berdnikov, A.;Bickley, A. A.;Borel, H.;Boyle, K.;Buesching, H.;Bumazhnov, V.;Chernichenko, S.;Chung, P.;Constantin, P.;Csörgő, T.;Denisov, A.;Dion, A.;Drees, A.;Durum, A.;Dzhordzhadze, V.;Fadem, B.;Finger, M.;Franz, A.;Frawley, A. D.;Fujiwara, K.;Glenn, A.;Gosset, J.;Goto, Y.;Gustafsson, H.-Å.;Hemmick, T. K.;Hill, J. C.;Hong, B.;Ichimiya, R.;Isobe, T.;Isupov, A.;Jacak, B. V.;Joo, K. S.;Kamin, J.;Kazantsev, A. V.;Khanzadeev, A.;Kikuchi, J.;Kim, D. H.;Kim, D. J.;Kim, E.;Kiss, Á.;Kochenda, L.;Komkov, B.;Konno, M.;Kozlov, A.;Lacey, R.;Lee, T.;Li, X.;Liška, T.;Liu, M. X.;Lynch, D.;Malakhov, A.;Malik, M. D.;Mao, Y.;Matathias, F.;McGaughey, P. L.;Milov, A.;Mukhopadhyay, D.;Nakamiya, Y.;Nakamura, T.;Oka, M.;Pantuev, V.;Park, J.;Pate, S. F.;Ravinovich, I.;Rembeczki, S.;Reygers, K.;Rolnick, S. D.;Rosnet, P.;Rykov, V. L.;Sakashita, K.;Samsonov, V.;Seidl, R.;Semenov, A. Yu.;Shimomura, M.;Shoji, K.;Silvestre, C.;Sorensen, S. P.;Tanabe, R.;Taneja, S.;Themann, H.;Tsuchimoto, Y.;Vale, C.;Veicht, A.;Velkovska, J.;Vértesi, R.;Vinogradov, A. A.;Wei, F.;Woody, C. L.;Wysocki, M.;Yamaguchi, Y. L.;Yamaura, K.;Yang, R.;Yokkaichi, S.;Zolin, L. |
| 貢獻者: | 高能與強場物理研究中心 |
| 關鍵詞: | [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex];[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex];FOS: Physical sciences;High Energy Physics - Experiment;High Energy Physics - Experiment (hep-ex);Nuclear Experiment;Nuclear Experiment (nucl-ex) |
| 日期: | 2012-11-08 |
| 上傳時間: | 2026-04-23 12:00:48 (UTC+8) |
| 出版者: | American Physical Society;American Physical Society (APS) |
| 摘要: | 摘要： Unpolarized cross sections and double-helicity asymmetries of single-inclusive positive and negative charged hadrons at midrapidity from p+p collisions at sqrt(s)=62.4 GeV are presented. The PHENIX measurements for 1.0 < p_T < 4.5 GeV/c are consistent with perturbative QCD calculations at next-to-leading order in the strong coupling constant, alpha_s. Resummed pQCD calculations including terms with next-to-leading-log accuracy, yielding reduced theoretical uncertainties, also agree with the data. The double-helicity asymmetry, sensitive at leading order to the gluon polarization in a momentum-fraction range of 0.05 ~< x_gluon ~< 0.2, is consistent with recent global parameterizations disfavoring large gluon polarization. PHENIX Collaboration. 447 authors, 12 pages, 5 figures, 5 tables. Submitted to Physical Review D
出版者： American Physical Society (APS)
出版日期： 2012-11-08
出處： Physical Review D, 2012-11, Vol.86 (9)
識別號： ISSN: 1550-7998
識別號： DOI: 10.1103/physrevd.86.092006
識別號： DOI: 10.48550/arxiv.1202.4020 |
| 顯示於類別: | [高能與強場物理研究中心] 期刊論文
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