Flavor decomposition of the sea quark helicity distributions in the nucleon from semiinclusive deep inelastic scattering
- Airapetian, A.
- Akopov, N.
- Avetissian, E.
- Mexner, V.
- Meyners, N.
- Mikloukho, O.
- Miller, C. A.
- Miyachi, Y.
- Muccifora, V.
- Nagaitsev, A.
- Nappi, E.
- Naryshkin, Y.
- Nass, A.
- Bailey, P.
- Negodaev, M.
- Nowak, W.-D.
- Oganessyan, K.
- Ohsuga, H.
- Orlandi, G.
- Pickert, N.
- Potashov, S.
- Potterveld, D. H.
- Raithel, M.
- Reggiani, D.
- Baturin, V.
- Reimer, P. E.
- Reischl, A.
- Reolon, A. R.
- Riedl, C.
- Rith, K.
- Rosner, G.
- Rostomyan, A.
- Rubacek, L.
- Ryckbosch, D.
- Salomatin, Y.
- Baumgarten, C.
- Sanjiev, I.
- Savin, I.
- Scarlett, C.
- Schafer, A.
- Schill, C.
- Schnell, G.
- Schuler, K. P.
- Schwind, A.
- Seele, J.
- Seidl, R.
- Beckmann, M.
- Seitz, B.
- Shanidze, R.
- Shearer, C.
- Shibata, T.-A.
- Shutov, V.
- Simani, M. C.
- Sinram, K.
- Stancari, M.
- Statera, M.
- Steffens, E.
- Belostotski, S.
- Steijger, J. J. M.
- Stewart, J.
- Stosslein, U.
- Tait, P.
- Tanaka, H.
- Taroian, S.
- Tchuiko, B.
- Terkulov, A.
- Tkabladze, A.
- Trzcinski, A.
- Bernreuther, S.
- Tytgat, M.
- Vandenbroucke, A.
- van der Nat, P.
- van der Steenhoven, G.
- Vetterli, M. C.
- Vikhrov, V.
- Vincter, M. G.
- Visser, J.
- Vogel, C.
- Vogt, M.
- Bianchi, N.
- Volmer, J.
- Weiskopf, C.
- Wendland, J.
- Wilbert, J.
- Ybeles Smit, G.
- Yen, S.
- Zihlmann, B.
- Zohrabian, H.
- Zupranski, P.
- HERMES Collaboration
- Blok, H. P.
- Bottcher, H.
- Akopov, Z.
- Borissov, A.
- Bouwhuis, M.
- Brack, J.
- Brull, A.
- Bryzgalov, V.
- Capitani, G. P.
- Chiang, H. C.
- Ciullo, G.
- Contalbrigo, M.
- Dalpiaz, P. F.
- Amarian, M.
- De Leo, R.
- De Nardo, L.
- De Sanctis, E.
- Devitsin, E.
- Di Nezza, P.
- Duren, M.
- Ehrenfried, M.
- Elalaoui-Moulay, A.
- Elbakian, G.
- Ellinghaus, F.
- Ammosov, V. V.
- Elschenbroich, U.
- Ely, J.
- Fabbri, R.
- Fantoni, A.
- Fechtchenko, A.
- Felawka, L.
- Fox, B.
- Franz, J.
- Frullani, S.
- Garber, Y.
- Andrus, A.
- Gapienko, G.
- Gapienko, V.
- Garibaldi, F.
- Garrow, K.
- Garutti, E.
- Gaskell, D.
- Gavrilov, G.
- Gharibyan, V.
- Graw, G.
- Grebeniouk, O.
- Aschenauer, E. C.
- Greeniaus, L. G.
- Hafidi, K.
- Hartig, M.
- Hasch, D.
- Heesbeen, D.
- Henoch, M.
- Hertenberger, R.
- Hesselink, W. H. A.
- Hillenbrand, A.
- Hoek, M.
- Augustyniak, W.
- Holler, Y.
- Hommez, B.
- Iarygin, G.
- Ivanilov, A.
- Izotov, A.
- Jackson, H. E.
- Jgoun, A.
- Kaiser, R.
- Kinney, E.
- Kisselev, A.
- Avakian, R.
- Konigsmann, K.
- Kopytin, M.
- Korotkov, V.
- Kozlov, V.
- Krauss, B.
- Krivokhijine, V. G.
- Lagamba, L.
- Lapikas, L.
- Laziev, A.
- Lenisa, P.
- Avetissian, A.
- Liebing, P.
- Lindemann, T.
- Lipka, K.
- Lorenzon, W.
- Lu, J.
- Maiheu, B.
- Makins, N. C. R.
- Marianski, B.
- Marukyan, H.
- Masoli, F.
DOIAbstract
Double-spin asymmetries of semi-inclusive cross sections for the production of identified pions and kaons have been measured in deep-inelastic scattering of polarized positrons on a polarized deuterium target. Five helicity distributions including those for three sea quark flavors were extracted from these data together with re-analyzed previous data for identified pions from a hydrogen target. These distributions are consistent with zero for all three sea flavors. A recently predicted flavor asymmetry in the polarization of the light quark sea appears to be disfavored by the data
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