Measurement of parton distributions of strange quarks in the nucleon from charged-kaon production in deep-inelastic scattering on the deuteron
- Airapetian, A.
- Akopov, N.
- Akopov, Z.
- Andrus, A.
- Aschenauer, E.C.
- Augustyniak, W.
- Avakian, R.
- Avetissian, A.
- Avetissian, E.
- Belostotski, S.
- Bianchi, N.
- Blok, H.P.
- Böttcher, H.
- Bonomo, C.
- Borissov, A.
- Brüll, A.
- Bryzgalov, V.
- Burns, J.
- Capiluppi, M.
- Capitani, G.P.
- Cisbani, E.
- Ciullo, G.
- Contalbrigo, M.
- Dalpiaz, P.F.
- Deconinck, W.
- De Leo, R.
- Demey, M.
- De Nardo, L.
- De Sanctis, E.
- Diefenthaler, M.
- Di Nezza, P.
- Dreschler, J.
- Düren, M.
- Ehrenfried, M.
- Elalaoui-Moulay, A.
- Elbakian, G.
- Ellinghaus, F.
- Elschenbroich, U.
- Fabbri, R.
- Fantoni, A.
- Felawka, L.
- Frullani, S.
- Funel, A.
- Gabbert, D.
- Gapienko, G.
- Gapienko, V.
- Garibaldi, F.
- Gavrilov, G.
- Gharibyan, V.
- Giordano, F.
- Gliske, S.
- Gregor, I.M.
- Guler, H.
- Hadjidakis, C.
- Hasch, D.
- Hasegawa, T.
- Hesselink, W.H.A.
- Hill, G.
- Hillenbrand, A.
- Hoek, M.
- Holler, Y.
- Hommez, B.
- Hristova, I.
- Iarygin, G.
- Imazu, Y.
- Ivanilov, A.
- Izotov, A.
- Jackson, H.E.
- Jgoun, A.
- Joosten, S.
- Kaiser, R.
- Keri, T.
- Kinney, E.
- Kisselev, A.
- Kobayashi, T.
- Kopytin, M.
- Korotkov, V.
- Kozlov, V.
- Kravchenko, P.
- Krivokhijine, V.G.
- Lagamba, L.
- Lamb, R.
- Lapikás, L.
- Lehmann, I.
- Lenisa, P.
- Liebing, P.
- Linden-Levy, L.A.
- Lopez Ruiz, A.
- Lorenzon, W.
- Lu, S.
- Lu, X.-R.
- Ma, B.-Q.
- Mahon, D.
- Maiheu, B.
- Makins, N.C.R.
- Manfré, L.
- Mao, Y.
- Marianski, B.
- Marukyan, H.
- Mexner, V.
- Miller, C.A.
- Miyachi, Y.
- Muccifora, V.
- Murray, M.
- Mussgiller, A.
- Nagaitsev, A.
- Nappi, E.
- Naryshkin, Y.
- Nass, A.
- Negodaev, M.
- Nowak, W.-D.
- Osborne, A.
- Pappalardo, L.L.
- Perez-Benito, R.
- Pickert, N.
- Raithel, M.
- Reggiani, D.
- Reimer, P.E.
- Reischl, A.
- Reolon, A.R.
- Riedl, C.
- Rith, K.
- Rock, S.E.
- Rosner, G.
- Rostomyan, A.
- Rubacek, L.
- Rubin, J.
- Ryckbosch, D.
- Salomatin, Y.
- Sanjiev, I.
- Schäfer, A.
- Schnell, G.
- Schüler, K.P.
- Seitz, B.
- Shearer, C.
- Shibata, T.-A.
- Shutov, V.
- Stancari, M.
- Statera, M.
- Steffens, E.
- Steijger, J.J.M.
- Stenzel, H.
- Stewart, J.
- Stinzing, F.
- Streit, J.
- Tait, P.
- Taroian, S.
- Tchuiko, B.
- Terkulov, A.
- Trzcinski, A.
- Tytgat, M.
- Vandenbroucke, A.
- van der Nat, P.B.
- van der Steenhoven, G.
- van Haarlem, Y.
- van Hulse, C.
- Varanda, M.
- Veretennikov, D.
- Vikhrov, V.
- Vilardi, I.
- Vogel, C.
- Wang, S.
- Yaschenko, S.
- Ye, H.
- Ye, Y.
- Ye, Z.
- Yen, S.
- Yu, W.
- Zeiler, D.
- Zihlmann, B.
- Zupranski, P.
DOIAbstract
AbstractThe momentum and helicity density distributions of the strange quark sea in the nucleon are obtained in leading order from charged-kaon production in deep-inelastic scattering on the deuteron. The distributions are extracted from spin-averaged K± multiplicities, and from K± and inclusive double-spin asymmetries for scattering of polarized positrons by a polarized deuterium target. The shape of the momentum distribution is softer than that of the average of the u¯ and d¯ quarks. In the region of measurement 0.02<x<0.6 and Q2>1.0 GeV2, the helicity distribution is zero within experimental uncertainties
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