Accès ouvert déclaré 2009 article

Gluon-Spin Contribution to the Proton Spin from the Double-Helicity Asymmetry in Inclusive π 0 Production in Polarized p + p Collisions at s = 200 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. Awes, B. Azmoun, V. Babintsev, M. Bai, G. Baksay, L. Baksay, A. Baldisseri, K. N. Barish, P. D. Barnes, B. Bassalleck, A. 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. Muñoz Camacho, S. Campbell, P. Chand, B. S. Chang, W. C. Chang, J. L. Charvet, S. Chernichenko, C. Y., M. Chiu, I. J. Choi, R. K. Choudhury, T. Chujo, P. Chung, A. Churyn, V. Cianciolo, Z. H. Citron, B. Cole, P. Constantin, M. Csanád, T. Csörgő, T. Dahms, S. Dairaku, K. Das, 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, J. Egdemir, F. Ellinghaus, T. Engelmore, A. Enokizono, H. En’yo, S. Esumi, O. Eyser, B. Fadem, D. E. Fields, М. Фингер, M. Finger, F. Fleuret, S. 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. Gösset, 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, M. Heffner, T. K. Hemmick, T. Hester, X. He, J. C. Hill, M. Hohlmann, W. Holzmann, K. Homma, B. Hong, T. Horaguchi, D. Hornback, S. Huang, Toshio Ichihara, R. Ichimiya, 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. J. Kim, S. H. Kim, E. Kinney, K. Kiriluk, Á. Kiss, E. Kistenev, J. Klay, L. Kochenda, V. Kochetkov, 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, P. Liebing, T. Liška, A. Litvinenko, M. X. Liu, X. Li, B. Love, D. Lynch, C. 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. Oda, C. A. Ogilvie, H. Okada, K. Okada, M. Oka, 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, M. Reuter, 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.G. 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. 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. Vertesi, A. A. Vinogradov, M. Virius, V. Vrba, E. Vznuzdaev, D. Walker, X. R. Wang, Y. Watanabe, F. Wei, J. Wessels, S. N. White, S. Williamson, 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

90Citations signalées, ce qui n’est pas une note de qualité

76Institutions déclarées

15Pays d’affiliation déclarés

Rattachement africain : us, ru, jp, fr, hu, de, in, kr, tw, br, il, cz, se, cn, sk. Niveau de preuve : code pays fourni par la source.

Le résumé fourni par la source

The double helicity asymmetry in neutral pion production for ${p}_{T}=1$ to $12\text{ }\text{ }\mathrm{GeV}/c$ was measured with the PHENIX experiment to access the gluon-spin contribution, $\ensuremath{\Delta}G$, to the proton spin. Measured asymmetries are consistent with zero, and at a theory scale of ${\ensuremath{\mu}}^{2}=4\text{ }\text{ }{\mathrm{GeV}}^{2}$ a next to leading order QCD analysis gives $\ensuremath{\Delta}{G}^{[0.02,0.3]}=0.2$, with a constraint of $\ensuremath{-}0.7<\ensuremath{\Delta}{G}^{[0.02,0.3]}<0.5$ at $\ensuremath{\Delta}{\ensuremath{\chi}}^{2}=9$ ($\ensuremath{\sim}3\ensuremath{\sigma}$) for the sampled gluon momentum fraction ($x$) range, 0.02 to 0.3. The results are obtained using predictions for the measured asymmetries generated from four representative fits to polarized deep inelastic scattering data. We also consider the dependence of the $\ensuremath{\Delta}G$ constraint on the choice of the theoretical scale, a dominant uncertainty in these predictions.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.

Le contrôle bibliographique ouvert

DOI retrouvé dans Crossref DOI retrouvé, mais le titre doit être comparé manuellement.

Titre Crossref: Gluon-Spin Contribution to the Proton Spin from the Double-Helicity Asymmetry in Inclusive <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:msup> <mml:mi>π</mml:mi> <mml:mn>0</mml:mn> </mml:msup> </mml:math> Production in Polarized <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mi>p</mml:mi> <mml:mo>+</mml:mo> <mml:mi>p</mml:mi> </mml:math> Collisions at <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> <mml:mo>=</mml:mo> <mml:mn>200</mml:mn>
Date Crossref: 01/07/2009
Éditeur: American Physical Society (APS)
Type: journal-article

Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.

Les institutions déclarées

University of Colorado Boulder Joint Institute for Nuclear Research Admiral Nevelskoy Maritime State University University of Massachusetts Amherst Stony Brook University Brookhaven National Laboratory RIKEN BNL Research Center RIKEN Nishina Center New Mexico State University Kyoto University Kyoto University of Education Centre National de la Recherche Scientifique Laboratoire de Physique Subatomique et des Technologies Associées Nantes Université École Polytechnique Laboratoire Leprince-Ringuet Oak Ridge National Laboratory Institute for High Energy Physics Florida Institute of Technology Commissariat à l'Énergie Atomique et aux Énergies Alternatives Direction des Energies CEA Paris-Saclay University of California, Riverside Los Alamos National Laboratory University of New Mexico Aquincum Institute of Technology Abilene Christian University Petersburg Nuclear Physics Institute University of Münster Peter the Great St. Petersburg Polytechnic University University of Colorado System Bhabha Atomic Research Centre Yonsei University Institute of Physics, Academia Sinica Institute of Chemistry, Academia Sinica Columbia University University of Illinois Urbana-Champaign University of Tsukuba Eötvös Loránd University Institute for Particle and Nuclear Physics Hungarian Academy of Sciences Florida State University Universidade de São Paulo Weizmann Institute of Science Lawrence Livermore National Laboratory Muhlenberg College Charles University Kurchatov Institute Nagasaki Institute of Applied Science University of Tennessee at Knoxville Vanderbilt University Tokyo University of Science The University of Tokyo Lund University Peking University Hiroshima University Georgia State University Iowa State University Korea University Korea University Tokyo Institute of Technology University of Debrecen Myongji University Université Paris-Sud Institut National de Physique Nucléaire et de Physique des Particules Waseda University Seoul National University Czech Technical University in Prague Rikkyo University China Institute of Atomic Energy Czech Academy of Sciences FZU ‒ Institute of Physics of the Academy of Sciences of the Czech Republic Institute of Physics of the Slovak Academy of Sciences Banaras Hindu University High Energy Accelerator Research Organization Université Clermont Auvergne

Une affiliation ne permet pas de déduire la nationalité d’un auteur.

Les sujets associés

Particle physics theoretical and experimental studiesQuantum Chromodynamics and Particle InteractionsHigh-Energy Particle Collisions Research

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