Published December 21, 1998
| Published
Journal Article
Open
Flavor asymmetry of the light quark sea from semi-inclusive deep-inelastic scattering
- Creators
- Ackerstaff, K.
- Airapetian, A.
- Akopov, N.
- Akushevich, I.
- Amarian, M.
- Ashenauer, E. C.
- Avakian, H.
- Avakian, R.
- Avetissian, A.
- Bains, B.
- Baumgarten, C.
- Beckmann, M.
- Belostotski, St.
- Belz, J. E.
- Benisch, Th.
- Bernreuther, S.
- Bianchi, N.
- Blouw, J.
- Böttcher, H.
- Borissov, A.
- Brack, J.
- Brauksiepe, S.
- Braun, B.
- Bray, B.
- Brons, St.
- Brückner, W.
- Brüll, A.
- Bruins, E. E. W.
- Bulten, H. J.
- Cadman, R. V.
- Capitani, G. P.
- Carter, P.
- Chumney, P.
-
Cisbani, E.
- Court, R.
- Dalpiaz, P. F.
- De Sanctis, E.
- De Schepper, D.
- Devitsin, E.
- de Witt Huberts, P. K. A.
- Di Nezza, P.
- Düren, M.
- Dvoredsky, A.
- Elbakian, G.
- Fantoni, A.
- Fechtchenko, A.
- Ferstl, M.
- Fiedler, K.
-
Filippone, B. W.
- Fischer, H.
- Fox, B.
- Franz, J.
- Frullani, S.
- Funk, M.-A.
- Gagunashvili, N. D.
- Gao, H.
- Gärber, Y.
- Garibaldi, F.
- Gavrilov, G.
- Geiger, P.
- Gharibyan, V.
- Giordjian, V.
- Golendukhin, A.
- Graw, G.
- Grebeniouk, O.
- Green, P. W.
- Greeniaus, L. G.
- Grosshauser, C.
- Gute, A.
- Haeberli, W.
- Hansen, J.-O.
- Hasch, D.
- Häusser, O.
- Henderson, R.
- Henkes, Th.
- Henoch, M.
- Hertenberger, R.
- Holler, Y.
- Holt, R. J.
- Hoprich, W.
- Ihssen, H.
- Iodice, M.
- Izotov, A.
- Jackson, H. E.
- Jgoun, A.
- Kaiser, R.
- Kinney, E.
- Kisselev, A.
- Kitching, P.
- Kobayashi, H.
- Koch, N.
- Königsmann, K.
- Kolstein, M.
- Kolster, H.
- Korotkov, V.
- Korsch, W.
- Kozlov, V.
- Kramer, L. H.
- Krivokhijine, V. G.
- Kurisuno, M.
- Kyle, G.
- Lachnit, W.
- Lorenzon, W.
- Makins, N. C. R.
- Manaenkov, S. I.
- Martens, F. K.
- Martin, J. W.
- Masoli, F.
- Mateos, A.
- McAndrew, M.
- McIlhany, K.
- McKeown, R. D.
- Menden, F. M.
- Meissner, F.
- Metz, A.
- Meyners, N.
- Mikloukho, O.
- Miller, C. A.
-
Miller, M. A.
- Milner, R.
- Mitsyn, V.
- Most, A.
- Mozzetti, R.
- Muccifora, V.
- Nagaitsev, A.
- Naryshkin, Y.
- Nathan, A. M.
- Neunreither, F.
- Niczyporuk, M.
- Nowak, W.-D.
- Nupieri, M.
- O'Neill, T. G.
- Ouyang, J.
- Owen, B. R.
- Papavassiliou, V.
- Pate, S. F.
- Pitt, M.
- Potashov, S.
- Potterveld, D. H.
- Rakness, G.
- Reali, A.
- Redwine, R.
- Reolon, A. R.
- Ristinen, R.
- Rith, K.
- Roloff, H.
- Rossi, P.
- Rudnitsky, S.
- Ruh, M.
- Ryckbosch, D.
- Sakemi, Y.
- Savin, I.
- Schmidt, F.
- Schmitt, H.
- Schnell, G.
- Schüler, K. P.
- Schwind, A.
- Shibata, T.-A.
- Shibatani, K.
- Shin, T.
- Shutov, V.
- Simani, C.
- Simon, A.
- Sinram, K.
- Slavich, P.
- Spengos, M.
- Steffens, E.
- Stenger, J.
- Stewart, J.
- Stoesslein, U.
- Sutter, M.
- Tallini, H.
- Taroian, S.
- Terkulov, A.
- Tipton, B.
- 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.
- Vincter, M. G.
- Volk, E.
- Wander, W.
- Williamson, S. E.
-
Wise, T.
- Woller, K.
- Yoneyama, S.
- Zohrabian, H.
Abstract
The flavor asymmetry of the light quark sea of the nucleon is determined in the kinematic range 0.02 < x < 0.3 and 1 < Q(2) < 10 GeV2 for the first time from semi-inclusive deep-inelastic scattering. The quantity [(d) over bar(x) - (u) over bar(x)]/[u(x) - d(x)] is derived from a relationship between the yields of positive and negative pions from unpolarized hydrogen and deuterium targets. The flavor asymmetry (d) over bar - (u) over bar is found to be nonzero and x dependent, showing an excess of (d) over bar over (u) over bar quarks in the proton.
Additional Information
© 1998 American Physical Society. Received 15 July 1998; revised 12 October 1998. We gratefully acknowledge the DESY management for its support and the DESY staff and the staffs of the collaborating institutions. This work was supported by the FWO-Flanders, Belgium; the Natural Sciences and Engineering Research Council of Canada; the INTAS, HCM, and TMR network contributions from the European Community; the German Bundesministerium für Bildung, Wissenschaft, Forschung und Technologie; the Deutscher Akademischer Austauschdienst (DAAD); the Italian Istituto Nazionale di Fisica Nucleare (INFN); Monbusho, JSPS, and Toray Science Foundation of Japan; the Dutch Foundation for Fundamenteel Onderzoek der Materie (FOM); the U.K. Particle Physics and Astronomy Research Council; and the U.S. Department of Energy and National Science Foundation.Attached Files
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Additional details
- Eprint ID
- 13121
- Resolver ID
- CaltechAUTHORS:ACKprl98
- Fonds voor Wetenschappelijk Onderzoek (FWO), Belgium
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- European Community
- Bundesministerium für Bildung, Wissenschaft, Forschung und Technologie
- Deutscher Akademischer Austauschdienst (DAAD)
- Istituto Nazionale di Fisica Nucleare (INFN) (Italy)
- Monbukagakusho
- Japanese Society for the Promotion of Science
- Toray Science Foundation
- Stichting voor Fundamenteel Onderzoek der Materie (FOM)
- Particle Physics and Astronomy Research Council (PPARC) (UK)
- Department of Energy
- National Science Foundation
- Created
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2009-01-30Created from EPrint's datestamp field
- Updated
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2021-11-08Created from EPrint's last_modified field