Academic Journal
Spin asymmetries for events with high p_T hadrons in DIS and an evaluation of the gluon polarization
| العنوان: | Spin asymmetries for events with high p_T hadrons in DIS and an evaluation of the gluon polarization |
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| المؤلفون: | Adeva, B., Arik, E., Arvidson, A., Badeek, B., Baum, G., Berglund, P., Betev, L., Birsa, R., de Botton, N., Bradamante, F., Bravar, A., Bressan, A., Bultmann, S., Burtin, E., Crabb, D., Cranshaw, J., Cuhadar, T., Dalla Torre, S., van Dantzig, R., Derro, B., Deshpande, A., Dhawan, S., Dulya, C., Eichblatt, S., Fasching, D., Feinstein, F., Fernandez, C., Frois, B., Gallas, A., Garzon, J.A., Gilly, H., Giorgi, M., von Goeler, E., Goertz, S., Gracia, G., de Groot, N., Grosse Perdekamp, M., Haft, K., von Harrach, D., Hasegawa, T., Hautle, P., Hayashi, N., Heusch, C.A., Horikawa, N., Hughes, V.W., Igo, G., Ishimoto, S., Iwata, T., Kabuss, E.M., Karev, A., Kessler, H.J., Ketel, T.J., Kiryluk, J., Kisselev, Yu., Klostermann, L., Kowalik, K., Kotzinian, A., Kroger, W., Kunne, F., Kurek, K., Kyynarainen, J., Lamanna, M., Landgraf, U., Le Goff, J.M., Lehar, F., de Lesquen, A., Lichtenstadt, J., Litmaath, M., Magnon, A., Mallot, G.K., Marie, F., Martin, A., Martino, J., Matsuda, T., Mayes, B., Mccarthy, J.S., Medved, K., Meyer, W., Miller, D., Miyachi, Y., Mori, K., Moromisato, J., Nassalski, J., Niinikoski, T.O., Oberski, J.E.J., Ogawa, A., Ozben, C., Pereira, H., Peshekhonov, D., Piegaia, R., Pinsky, L., Platchkov, S., Plo, M., Pose, D., Postma, H., Pretz, J., Radel, G., Reicherz, G., Roberts, J., Rodriguez, M., Rondio, E., Sabo, I., Saborido, J., Sandacz, A., Savin, I., Schiavon, P., Sichtermann, E.P., Simeoni, F., Smirnov, George, Staude, A., Steinmetz, A., Stiegler, U., Stuhrmann, H., Sulej, R., Tessarotto, F., Thers, Dominique, Taczaa, W., Tripet, A., Unel, G., Velasco, M., Vogt, J., Voss, R., Whitten, C., Windmolders, R., Willumeit, R., Wislicki, W., Witzmann, A., Zanetti, A.M., Zaremba, K., Zhao, J., Collaboration, Smc |
| المساهمون: | Laboratoire SUBATECH Nantes (SUBATECH), Mines Nantes (Mines Nantes)-Université de Nantes (UN)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), SMC |
| المصدر: | ISSN: 1550-7998. |
| بيانات النشر: | HAL CCSD American Physical Society |
| سنة النشر: | 2004 |
| المجموعة: | Archives ouvertes Hal IMT Atlantique |
| مصطلحات موضوعية: | [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex] |
| الوصف: | 13 pages, 6 figures, 4 tables, submitted to Phys. Rev. D ; We present a measurement of the longitudinal spin cross section asymmetry for deep inelastic muon-nucleon interactions with two high transverse momentum hadrons in the final state. Two methods of event classification are used to increase the contribution of the Photon Gluon Fusion process to above 30%. The most effective one, based on a neural network approach, provides the asymmetries A_p(lN->lhhX)=0.030+/-0.057+/-0.010 and A_d(lN->lhhX)=0.070+/-0.076+/-0.010. From these values we derive an averaged gluon polarization delta(G)/G=-0.20+/-0.28+/-0.10 at an average fraction of nucleon momentum carried by gluons eta=0.07. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| Relation: | info:eu-repo/semantics/altIdentifier/arxiv/hep-ex/0402010; in2p3-00023593; https://hal.in2p3.fr/in2p3-00023593; ARXIV: hep-ex/0402010 |
| DOI: | 10.1103/PhysRevD.70.012002 |
| الاتاحة: | https://hal.in2p3.fr/in2p3-00023593 https://doi.org/10.1103/PhysRevD.70.012002 |
| رقم الانضمام: | edsbas.C1CE2A52 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1103/PhysRevD.70.012002 |
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