Polarisation of valence and non-strange sea quarks in the nucleon from semi-inclusive spin asymmetries

Adeva B, Arik E, Arvidson A, Badelek B, Ballintijn MK, Bardin G, Baum G, Berglund P, Betev L, Bird IG, Birsa R, et al. (1996)
Phys.Lett. B 369(1): 93-100.

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Abstract
We present a measurement of semi-inclusive spin asymmetries for positively and negatively charged hadrons from deep inelastic scattering of polarised muons on polarised protons and deuterons in the range 0.003 < x < 0.7. From these asymmetries and the previously published inclusive spin asymmetries we determine, for the first time, the x-dependent spin distributions for up and down valence quarks and for non-strange sea quarks. We find that the first moments of the valence quark spin distributions are Delta u(v) = 1.01 +/- 0.19 +/- 0.14 and Delta d(v) = -0.57 +/- 0.22 +/- 0.11. The spin distribution function of non-strange sea quarks is consistent with zero over the measured range of x and the first moment is Delta (u) over bar = Delta (d) over bar = -0.02 +/- 0.09 +/- 0.03.
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Adeva B, Arik E, Arvidson A, et al. Polarisation of valence and non-strange sea quarks in the nucleon from semi-inclusive spin asymmetries. Phys.Lett. B. 1996;369(1):93-100.
Adeva, B., Arik, E., Arvidson, A., Badelek, B., Ballintijn, M. K., Bardin, G., Baum, G., et al. (1996). Polarisation of valence and non-strange sea quarks in the nucleon from semi-inclusive spin asymmetries. Phys.Lett. B, 369(1), 93-100.
Adeva, B., Arik, E., Arvidson, A., Badelek, B., Ballintijn, M. K., Bardin, G., Baum, G., Berglund, P., Betev, L., Bird, I. G., et al. (1996). Polarisation of valence and non-strange sea quarks in the nucleon from semi-inclusive spin asymmetries. Phys.Lett. B 369, 93-100.
Adeva, B., et al., 1996. Polarisation of valence and non-strange sea quarks in the nucleon from semi-inclusive spin asymmetries. Phys.Lett. B, 369(1), p 93-100.
B. Adeva, et al., “Polarisation of valence and non-strange sea quarks in the nucleon from semi-inclusive spin asymmetries”, Phys.Lett. B, vol. 369, 1996, pp. 93-100.
Adeva, B., Arik, E., Arvidson, A., Badelek, B., Ballintijn, M.K., Bardin, G., Baum, G., Berglund, P., Betev, L., Bird, I.G., Birsa, R., Bjorkholm, P., Bonner, B.E., deBotton, N., Bradamante, F., Bressan, A., Bultmann, S., Burtin, E., Cavata, C., Crabb, D., Cranshaw, J., Cuhadar, T., DallaTorre, S., vanDantzig, R., Deshpande, A., Dhawan, S., Dulya, C., Dyring, A., Eichblatt, S., Faivre, J.C., Fasching, D., Feinstein, F., Fernandez, C., Frois, B., Garzon, J.A., Gaussiran, T., Giorgi, M., vonGoeler, E., Gomez, A., Gracia, G., deGroot, N., Perdekamp, M.G., Gulmez, E., vonHarrach, D., Hasegawa, T., Hautle, P., Hayashi, N., Heusch, C.A., Horikawa, N., Hughes, V.W., Igo, G., Ishimoto, S., Iwata, T., Kabuss, E.M., Kageya, T., Karev, A., Kessler, H.J., Ketel, T.J., Kishi, A., Kisselev, Y., Klostermann, L., Kramer, D., Krivokhijine, V., Kroger, W., Kyynarainen, J., Lamanna, M., Landgraf, U., Layda, T., LeGoff, J.M., Lehar, F., deLesquen, A., Lichtenstadt, J., Litmaath, M., LopezPonte, S., Lowe, M., Magnon, A., Mallot, G.K., Marie, F., Martin, A., Martino, J., Matsuda, T., Mayes, B., McCarthy, J.S., Medved, K., vanMiddelkoop, G., Miller, D., Mori, K., Moromisato, J., Nagaitsev, A., Nassalski, J., Naumann, L., Niinikoski, T.O., Oberski, J.E.J., Ogawa, A., Ozben, C., Penzo, A., Perez, C., PerrotKunne, F., Peshekhonov, D., Piegaia, R., Pinsky, L., Platchkov, S., Plo, M., Pose, D., Postma, H., Pretz, J., Pussieux, T., Pyrlik, J., Reyhancan, I., Rijllart, A., Roberts, J.B., Rock, S., Rodriguez, M., Rondio, E., Rosado, A., Sabo, I., Saborido, J., Sandacz, A., Savin, I., Schiavon, P., Schuler, K.P., Segal, R., Seitz, R., Semertzidis, Y., Sergeev, S., Sever, F., Shanahan, P., Sichtermann, E.P., Smirnov, G.I., Staude, A., Steinmetz, A., Stiegler, U., Stuhrmann, H., Szleper, M., Teichert, K.M., Tessarotto, F., Velasco, M., Vogt, J., Voss, R., Weinstein, R., Whitten, C., Windmolders, R., Willumeit, R., Wislicki, W., Witzmann, A., Zanetti, A.M., Zhao, J.: Polarisation of valence and non-strange sea quarks in the nucleon from semi-inclusive spin asymmetries. Phys.Lett. B. 369, 93-100 (1996).
Adeva, B, Arik, E, Arvidson, A, Badelek, B, Ballintijn, MK, Bardin, G, Baum, Günter, Berglund, P, Betev, L, Bird, IG, Birsa, R, Bjorkholm, P, Bonner, BE, deBotton, N, Bradamante, F, Bressan, A, Bultmann, S, Burtin, E, Cavata, C, Crabb, D, Cranshaw, J, Cuhadar, T, DallaTorre, S, vanDantzig, R, Deshpande, A, Dhawan, S, Dulya, C, Dyring, A, Eichblatt, S, Faivre, JC, Fasching, D, Feinstein, F, Fernandez, C, Frois, B, Garzon, JA, Gaussiran, T, Giorgi, M, vonGoeler, E, Gomez, A, Gracia, G, deGroot, N, Perdekamp, MG, Gulmez, E, vonHarrach, D, Hasegawa, T, Hautle, P, Hayashi, N, Heusch, CA, Horikawa, N, Hughes, VW, Igo, G, Ishimoto, S, Iwata, T, Kabuss, EM, Kageya, T, Karev, A, Kessler, HJ, Ketel, TJ, Kishi, A, Kisselev, Y, Klostermann, L, Kramer, D, Krivokhijine, V, Kroger, W, Kyynarainen, J, Lamanna, M, Landgraf, U, Layda, T, LeGoff, JM, Lehar, F, deLesquen, A, Lichtenstadt, J, Litmaath, M, LopezPonte, S, Lowe, M, Magnon, A, Mallot, GK, Marie, F, Martin, A, Martino, J, Matsuda, T, Mayes, B, McCarthy, JS, Medved, K, vanMiddelkoop, G, Miller, David, Mori, K, Moromisato, J, Nagaitsev, A, Nassalski, J, Naumann, L, Niinikoski, TO, Oberski, JEJ, Ogawa, A, Ozben, C, Penzo, A, Perez, C, PerrotKunne, F, Peshekhonov, D, Piegaia, R, Pinsky, L, Platchkov, S, Plo, M, Pose, D, Postma, H, Pretz, J, Pussieux, T, Pyrlik, J, Reyhancan, I, Rijllart, A, Roberts, JB, Rock, S, Rodriguez, M, Rondio, E, Rosado, A, Sabo, I, Saborido, J, Sandacz, A, Savin, I, Schiavon, P, Schuler, KP, Segal, R, Seitz, R, Semertzidis, Y, Sergeev, S, Sever, F, Shanahan, P, Sichtermann, EP, Smirnov, GI, Staude, A, Steinmetz, A, Stiegler, U, Stuhrmann, H, Szleper, M, Teichert, KM, Tessarotto, F, Velasco, M, Vogt, J, Voss, R, Weinstein, R, Whitten, C, Windmolders, R, Willumeit, R, Wislicki, W, Witzmann, A, Zanetti, AM, and Zhao, J. “Polarisation of valence and non-strange sea quarks in the nucleon from semi-inclusive spin asymmetries”. Phys.Lett. B 369.1 (1996): 93-100.
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