Cross sections and double-helicity asymmetries of midrapidity inclusive charged hadrons in p+p collisions at sqrt(s)=62.4 GeV
A. Adare, S. Afanasiev, C. Aidala, N. N. Ajitanand, Y. Akiba, H. Al-Bataineh, J. Alexander, K. Aoki, L. Aphecetche, J. Asai, E. T. Atomssa, R. Averbeck, T. C. A… 展开作者
A. Adare, S. Afanasiev, C. Aidala, N. N. Ajitanand, Y. Akiba, H. Al-Bataineh, J. Alexander, K. Aoki, L. Aphecetche, J. Asai, E. T. Atomssa, R. Averbeck, T. C. Awes, B. Azmoun, V. Babintsev, M. Bai, G. Baksay, L. Baksay, A. Baldisseri, K. N. Barish, P. D. Barnes, B. Bassalleck, A. T. Basye, S. Bathe, S. Batsouli, V. Baublis, C. Baumann, A. Bazilevsky, S. Belikov, R. Bennett, A. Berdnikov, Y. Berdnikov, A. A. Bickley, J. G. Boissevain, H. Borel, K. Boyle, M. L. Brooks, H. Buesching, V. Bumazhnov, G. Bunce, S. Butsyk, C. M. Camacho, S. Campbell, B. S. Chang, W. C. Chang, J. -L. Charvet, S. Chernichenko, C. Y. Chi, M. Chiu, I. J. Choi, R. K. Choudhury, T. Chujo, P. Chung, A. Churyn, V. Cianciolo, Z. Citron, B. A. Cole, P. Constantin, M. Csanád, T. Csörg\Hö, T. Dahms, S. Dairaku, K. Das, A. Datta, G. David, A. Denisov, D. d'Enterria, A. Deshpande, E. J. Desmond, O. Dietzsch, A. Dion, M. Donadelli, O. Drapier, A. Drees, K. A. Drees, A. K. Dubey, A. Durum, D. Dutta, V. Dzhordzhadze, Y. V. Efremenko, F. Ellinghaus, T. Engelmore, A. Enokizono, H. En'yo, S. Esumi, K. O. Eyser, B. Fadem, D. E. Fields, M. Finger, M. Finger,, F. Fleuret, S. L. Fokin, Z. Fraenkel, J. E. Frantz, A. Franz, A. D. Frawley, K. Fujiwara, Y. Fukao, T. Fusayasu, I. Garishvili, A. Glenn, H. Gong, M. Gonin, J. Gosset, Y. Goto, R. Granier de Cassagnac, N. Grau, S. V. Greene, M. Grosse Perdekamp, T. Gunji, H. -Å. Gustafsson, A. Hadj Henni, J. S. Haggerty, H. Hamagaki, R. Han, E. P. Hartouni, K. Haruna, E. Haslum, R. Hayano, X. He, M. Heffner, T. K. Hemmick, T. Hester, J. C. Hill, M. Hohlmann, W. Holzmann, K. Homma, B. Hong, T. Horaguchi, D. Hornback, S. Huang, T. Ichihara, R. Ichimiya, H. Iinuma, Y. Ikeda, K. Imai, J. Imrek, M. Inaba, D. Isenhower, M. Ishihara, T. Isobe, M. Issah, A. Isupov, D. Ivanischev, B. V. Jacak, J. Jia, J. Jin, B. M. Johnson, K. S. Joo, D. Jouan, F. Kajihara, S. Kametani, N. Kamihara, J. Kamin, J. H. Kang, J. Kapustinsky, D. Kawall, A. V. Kazantsev, T. Kempel, A. Khanzadeev, K. M. Kijima, J. Kikuchi, B. I. Kim, D. H. Kim, D. J. Kim, E. Kim, S. H. Kim, E. Kinney, K. Kiriluk, Á. Kiss, E. Kistenev, J. Klay, C. Klein-Boesing, L. Kochenda, B. Komkov, M. Konno, J. Koster, A. Kozlov, A. Král, A. Kravitz, G. J. Kunde, K. Kurita, M. Kurosawa, M. J. Kweon, Y. Kwon, G. S. Kyle, R. Lacey, Y. S. Lai, J. G. Lajoie, D. Layton, A. Lebedev, D. M. Lee, K. B. Lee, T. Lee, M. J. Leitch, M. A. L. Leite, B. Lenzi, X. Li, P. Liebing, T. Liška, A. Litvinenko, H. Liu, M. X. Liu, B. Love, D. Lynch, C. F. Maguire, Y. I. Makdisi, A. Malakhov, M. D. Malik, V. I. Manko, E. Mannel, Y. Mao, L. Mašek, H. Masui, F. Matathias, M. McCumber, P. L. McGaughey, N. Means, B. Meredith, Y. Miake, P. Mikeš, K. Miki, A. Milov, M. Mishra, J. T. Mitchell, A. K. Mohanty, Y. Morino, A. Morreale, D. P. Morrison, T. V. Moukhanova, D. Mukhopadhyay, J. Murata, S. Nagamiya, J. L. Nagle, M. Naglis, M. I. Nagy, I. Nakagawa, Y. Nakamiya, T. Nakamura, K. Nakano, J. Newby, M. Nguyen, T. Niita, R. Nouicer, A. S. Nyanin, E. O'Brien, S. X. Oda, C. A. Ogilvie, M. Oka, K. Okada, Y. Onuki, A. Oskarsson, M. Ouchida, K. Ozawa, R. Pak, A. P. T. Palounek, V. Pantuev, V. Papavassiliou, J. Park, W. J. Park, S. F. Pate, H. Pei, J. -C. Peng, H. Pereira, V. Peresedov, D. Yu. Peressounko, C. Pinkenburg, M. L. Purschke, A. K. Purwar, H. Qu, J. Rak, A. Rakotozafindrabe, I. Ravinovich, K. F. Read, S. Rembeczki, K. Reygers, V. Riabov, Y. Riabov, D. Roach, G. Roche, S. D. Rolnick, M. Rosati, S. S. E. Rosendahl, P. Rosnet, P. Rukoyatkin, P. Ružička, V. L. Rykov, B. Sahlmueller, N. Saito, T. Sakaguchi, S. Sakai, K. Sakashita, V. Samsonov, T. Sato, S. Sawada, K. Sedgwick, J. Seele, R. Seidl, A. Yu. Semenov, V. Semenov, R. Seto, D. Sharma, I. Shein, T. -A. Shibata, K. Shigaki, M. Shimomura, K. Shoji, P. Shukla, A. Sickles, C. L. Silva, D. Silvermyr, C. Silvestre, K. S. Sim, B. K. Singh, C. P. Singh, V. Singh, M. Slunečka, A. Soldatov, R. A. Soltz, W. E. Sondheim, S. P. Sorensen, I. V. Sourikova, F. Staley, P. W. Stankus, E. Stenlund, M. Stepanov, A. Ster, S. P. Stoll, T. Sugitate, C. Suire, A. Sukhanov, J. Sziklai, E. M. Takagui, A. Taketani, R. Tanabe, Y. Tanaka, S. Taneja, K. Tanida, M. J. Tannenbaum, A. Taranenko, P. Tarján, H. Themann, T. L. Thomas, M. Togawa, A. Toia, L. Tomášek, Y. Tomita, H. Torii, R. S. Towell, V-N. Tram, I. Tserruya, Y. Tsuchimoto, C. Vale, H. Valle, H. W. van Hecke, A. Veicht, J. Velkovska, R. Vértesi, A. A. Vinogradov, M. Virius, V. Vrba, E. Vznuzdaev, X. R. Wang, Y. Watanabe, F. Wei, J. Wessels, S. N. White, D. Winter, C. L. Woody, M. Wysocki, W. Xie, Y. L. Yamaguchi, K. Yamaura, R. Yang, A. Yanovich, J. Ying, S. Yokkaichi, G. R. Young, I. Younus, I. E. Yushmanov, W. A. Zajc, O. Zaudtke, C. Zhang, S. Zhou, L. Zolin
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PHENIX Collaboration. 447 authors, 12 pages, 5 figures, 5 tables. Submitted to Physical Review D
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.
Transverse Single-Spin Asymmetries of Midrapidity Direct Photons, Neutral Pions, and Eta Mesons in 200 GeV Polarized Proton-Proton Collisions at PHENIX
Transverse Single-Spin Asymmetries of Midrapidity $π^{0}$ and $η$ Mesons in $\sqrt{s_{NN}} = 200$ GeV $p^{\uparrow}+$Au and $p^{\uparrow}+$Al Collisions from PHENIX
The gluon spin contribution to the proton spin from the double helicity asymmetry in inclusive pi^0 production in polarized p+p collisions at sqrt(s)=200 GeV
Measurement of transverse-single-spin asymmetries for midrapidity and forward-rapidity production of hadrons in polarized p+p collisions at $\sqrt{s}=$200 and 62.4 GeV
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AGH University(AGH科技大学);School of Particles and Accelerators, Institute for Research in Fundamental Sciences (IPM)(基本科学研究所粒子与加速器学院);Institut für Theoretische Physik, Universität Münster(明斯特大学理论物理研究所);Istituto Nazionale di Fisica Nucleare, Gruppo collegato di Cosenza(意大利国家核物理研究所科森扎协作组);Helmholtz-Institut für Strahlen-und Kernphysik and Bethe Center for Theoretical Physics, Universität Bonn(波恩大学斯特拉斯曼和核物理亥姆霍兹研究所及贝特理论物理中心);Institute for Advanced Simulation (IAS-4), Forschungszentrum Jülich(于利希研究中心先进模拟研究所(IAS-4));Peng Huanwu Collaborative Center for Research and Education, International Institute for Interdisciplinary and Frontiers, Beihang University(北京航空航天大学国际交叉前沿研究院彭桓武教研合作中心)