Gottfried sum from the ratio F2n/F2p

Experimental results obtained at the CERN Super Proton Synchrotron on the structure-function ratio F2n/F2p in the kinematic range 0.004 < x < 0.8 and 0.4 < Q2 < 190 GeV2, together with the structure function F2d determined from a fit to published data, are used to derive...

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Published in:Physical review letters 1991-05, Vol.66 (21), p.2712-2715
Main Authors: Amaudruz, P, Arneodo, M, Arvidson, A, Badelek, B, Baum, G, Beaufays, J, Bird, IG, Botje, M, Broggini, C, Brückner, W, Brüll, A, Burger, WJ, Ciborowski, J, Crittenden, R, van Dantzig R, Döbbeling, H, Domingo, J, Drinkard, J, Dzierba, A, Engelien, H, Ferrero, MI, Fluri, ML, Grafstrom, P, von Harrach D, van der Heijden M, Heusch, C, Ingram, Q, Jacholkowska, A, Janson, K, de Jong M, Kabuss, EM, Kaiser, R, Ketel, TJ, Klein, F, Korzen, B, Krüner, U, Kullander, S, Landgraf, U, Lettenström, F, Lindqvist, T, Mallot, GK, Mariotti, C, van Middelkoop G, Mizuno, Y, Nassalski, J, Nowotny, D, Pavel, N, Peschel, H, Peroni, C, Povh, B, Rieger, R, Rith, K, Röhrich, K, Rondio, E, Ropelewski, L, Sandacz, A, Scholz, C, Schumacher, R, Sennhauser, U, Sever, F, Shibata, T, Siebler, M, Simon, A, Staiano, A
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Language:English
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Summary:Experimental results obtained at the CERN Super Proton Synchrotron on the structure-function ratio F2n/F2p in the kinematic range 0.004 < x < 0.8 and 0.4 < Q2 < 190 GeV2, together with the structure function F2d determined from a fit to published data, are used to derive the difference F2p(x) - F2n(x). The value of the Gottfried sum integral (F2p - F2n) dx/x = 0.240 +/- 0.016 is below the quark-parton-model expectation of 1/3.
ISSN:0031-9007
1079-7114
1079-7114
DOI:10.1103/PhysRevLett.66.2712