/ Experiment-HEP hep-ex/9906035


Flavor decomposition of the polarized quark distributions in the nucleon from inclusive and semiinclusive deep inelastic scattering


Ackerstaff, K. ; Airapetian, A. ; Akopov, N. ; Akushevich, I. ; Amarian, M. ; Aschenauer, E.C. ; Avakian, H. ; Avakian, R. ; Avetisian, A. ; Bains, B. ; Barrow, S. ; Baumgarten, C. ; Beckmann, M. ; Belostotski, S. ; Belz, J.E. ; Benisch, T. ; Bernreuther, S. ; Bianchi, N. ; Blanchard, S. ; Blouw, J. ; Bottcher, H. ; Borissov, A. ; Brack, J. ; Bray, B. ; Brauksiepe, S. ; Braun, B. ; Brons, St. ; Bruckner, W. ; Brull, A. ; Bruins, E.E.W. ; Bulten, H.J. ; Cadman, R.V. ; Capitani, G.P. ; Carter, P. ; Chumney, Pamela R.K. ; Cisbani, E. ; Court, G.R. ; Dalpiaz, P.F. ; De Leo, R. ; Delheij, P.P.J. ; De Sanctis, E. ; De Schepper, D. ; Devitsin, E. ; de Witt Huberts, P.K.A. ; Di Nezza, P. ; Duren, M. ; Dvoredsky, A. ; Ely, J. ; Elbakian, G. ; Emerson, J. ; Fantoni, A. ; Fechtchenko, A. ; Ferstl, M. ; Fick, D. ; Fiedler, K. ; Filippone, B.W. ; Fischer, H. ; Fortune, H.T. ; Fox, B. ; Frabetti, S. ; Franz, J. ; Frullani, S. ; Funk, M.A. ; Gagunashvili, N.D. ; Galumian, P. ; Gao, H. ; Garber, Y. ; Garibaldi, F. ; Gavrilov, G. ; Geiger, P. ; Gharibyan, V. ; Golendukhin, A. ; Graw, G. ; Grebeniouk, O. ; Green, P.W. ; Greeniaus, L.G. ; Grosshauser, C. ; Guidal, M. ; Gute, A. ; Gyurjian, V. ; Haas, J.P. ; Haeberli, W. ; Hansen, J.O. ; Hasch, D. ; Hausser, O. ; Henderson, R. ; Heinsius, F.H. ; Henkes, T. ; Henoch, M. ; Hertenberger, R. ; Holler, Y. ; Holt, R.J. ; Hoprich, W. ; Ihssen, H. ; Iodice, M. ; Izotov, A. ; Jackson, H.E. ; Jgoun, A. ; Jones, C. ; Kaiser, R. ; Kestel, M. ; Kinney, E. ; Kirsch, M. ; Kisselev, A. ; Kitching, P. ; Kobayashi, H. ; Koch, N. ; Konigsmann, Kay ; Kolstein, M. ; Kolster, H. ; Korotkov, V. ; Korsch, W. ; Kozlov, V. ; Kramer, L.H. ; Krause, B. ; Krivokhijine, V.G. ; Kuckes, M. ; Kummell, F. ; Kurisuno, M. ; Kyle, G. ; Lachnit, W. ; Lorenzon, W. ; Lung, A. ; Makins, N.C.R. ; Martens, F.K. ; Martin, J.W. ; Marukian, H. ; Masoli, F. ; Mateos, A. ; Maul, M. ; McAndrew, M. ; McIlhany, Kevin L. ; McKeown, R.D. ; Meissner, F. ; Menden, F. ; Mercer, D. ; Metz, A. ; Meyners, N. ; Mikloukho, O. ; Miller, C.A. ; Miller, M.A. ; Milner, R. ; Mitsyn, V. ; Most, A. ; Mozzetti, R. ; Muccifora, V. ; Nagaitsev, A. ; Nappi, E. ; Naryshkin, Yu. ; Nathan, A.M. ; Neunreither, F. ; Niczyporuk, J.M. ; Nowak, W.D. ; Nupieri, M. ; Oelwein, P. ; Ogami, H. ; O'Neill, T.G. ; Openshaw, R. ; Owen, B.R. ; Ouyang, J. ; Papavassiliou, V. ; Pate, S.F. ; Pitt, M. ; Poolman, H.R. ; Potashov, S. ; Potterveld, David H. ; Rakness, G. ; Reali, A. ; Redwine, R. ; Reolon, A.R. ; Ristinen, R. ; Rith, K. ; Roper, G. ; Rossi, P. ; Rudnitsky, S. ; Ruh, M. ; Ryckbosch, D. ; Sakemi, Y. ; Savin, Igor A. ; Scarlett, C. ; Schafer, A. ; Schmidt, F. ; Schmitt, H. ; Schnell, G. ; Schuler, K.P. ; Schwind, A. ; Seibert, J. ; Shibata, T.A. ; Shibatani, K. ; Shin, T. ; Shutov, V. ; Simani, C. ; Simon, A. ; Sinram, K. ; Slavich, P. ; Smythe, William R. ; Sowinski, J. ; Spengos, M. ; Steffens, E. ; Stenger, J. ; Stewart, J. ; Stock, F. ; Stoesslein, U. ; Sutter, M. ; Tallini, H. ; Taroian, S. ; Terkulov, A. ; Thiessen, D.M. ; Tipton, B. ; Thomas, E. ; Trudel, A. ; Tytgat, M. ; Urciuoli, G.M. ; van Hunen, J.J. ; van de Vyver, R. ; van den Brand, J.F.J. ; van der Steenhoven, G. ; Vetterli, M.C. ; Vikhrov, V. ; Vincter, M. ; Visser, J. ; Volk, E. ; Wander, W. ; Welch, T.P. ; Wendland, J. ; Williamson, S.E. ; Wise, T. ; Woller, K. ; Yoneyama, S. ; Zapfe, K. ; Zohrabian, H. ; Zurmuhle, R.

Published in: Phys.Lett.
Year: 1999
Vol.: B464
Page No: 123-134
Pages: 10

Abstract: Spin asymmetries of semi-inclusive cross sections for the production of positively and negatively charged hadrons have been measured in deep-inelastic scattering of polarized positrons on polarized hydrogen and 3He targets, in the kinematic range 0.023<x<0.6 and 1 GeV^2<Q^2<10 GeV^2. Polarized quark distributions are extracted as a function of x for up $(u+u_bar) and down (d+d_bar) flavors. The up quark polarization is positive and the down quark polarization is negative in the measured range. The polarization of the sea is compatible with zero. The first moments of the polarized quark distributions are presented. The isospin non-singlet combination Delta_q_3 is consistent with the prediction based on the Bjorken sum rule. The moments of the polarized quark distributions are compared to predictions based on SU(3)_f flavor symmetry and to a prediction from lattice QCD.

Web-Page: http://www.adsabs.harvard.edu/abs/1999PhLB..464..123A; http://alice.cern.ch/format/showfull?sysnb=0317802; http://dx.doi.org/10.1016/S0370-2693(99)00964-8; http://www.sciencedirect.com/science?_ob=GatewayURL&_origin=SPIRES&_method=citationSearch&_volkey=03702693%23464%23123%23&_version=1&md5=aab0ee7b1c090f92b0e7221c4583d7b1

Total numbers of views: 1506
Numbers of unique views: 595
e-proceeding
 Record created 2010-10-28, last modified 2014-01-30


External links:
Download fulltextADSABS
Download fulltextCERNKEY
Download fulltextDOI
Download fulltextSCIDIR
Rate this document:

Rate this document:
1
2
3
 
(Not yet reviewed)