Quark-hadron duality in spin structure functions g(1)p and g(1)d

Bosted, Pe; Dharmawardane, Kv; Dodge, Ge; Forest, Ta; Kuhn, Se; Prok, Y; Adams, G; Amarian, M; Ambrozewicz, P; Marco, Anghinolfi; Asryan, G; Avakian, H; Bagdasaryan, H; Baillie, N; Ball, Jp; Baltzell, Na; Barrow, S; Batourine, V; Marco, Battaglieri; Beard, K; Bedlinskiy, I; Bektasoglu, M; Bellis, M; Benmouna, N; Biselli, As; Bonner, Be; Bouchigny, S; Boiarinov, S; Bradford, R; Branford, D; Brooks, Wk; Bultmann, S; Burkert, Vd; Butuceanu, C; Calarco, Jr; Careccia, Sl; Carman, Ds; Carnahan, B; Cazes Antoine Jacques,; Chen, S; Cole, Pl; Collins, P; Coltharp, P; Cords, D; Corvisiero, Pietro; Crabb, D; Crannell, H; Crede, V; Cummings, Jp; De Masi, R; Devita, R; De Sanctis Enzo,; Degtyarenko, Pv; Denizli, H; Dennis, L; Deur, A; Djalali, C; Donnelly, J; Doughty, D; Dragovitsch, P; Dugger, M; Dytman, S; Dzyubak, Op; Egiyan, H; Egiyan, Ks; Elouadrhiri, L; Eugenio, P; Fatemi, R; Fedotov, G; Feuerbach, Rj; Funsten, H; Garcon, M; Gavalian, G; Gilfoyle, Gp; Giovanetti, Kl; Girod, Fx; Goetz, Jt; Evgueni, Golovatch; Gonenc, A; Gothe, Rw; Griffioen, Ka; Guidal, M; Guillo, M; Guler, N; Guo, L; Gyurjyan, V; Cynthia, Hadjidakis; Hafidi, K; Hakobyan, Rs; Hardie, J; Heddle, D; Hersman, Fw; Hicks, K; Hleiqawi, I; Holtrop, M; Huertas, M; Hyde Wright CE,; Ilieva, Y; Ireland, Dg; Ishkhanov, Bs; Isupov, El; Ito, Mm; Jenkins, D; Hs, Jo; Joo, K; Juengst, Hg; Keith, C; Kellie, Jd; Khandaker, M; Kim, Ky; Kim, K; Kim, W; Klein, A; Klein, Fj; Klusman, M; Kossov, M; Kramer, Lh; Kubarovsky, V; Kuhn, J; Kuleshov, Sv; Lachniet, J; Laget, Jm; Langheinrich, J; Lawrence, D; Jun, Li; Acs, Lima; Livingston, K; H, Lu; Lukashin, K; Maccormick, M; Manak, Jj; Markov, N; Mcaleer, S; Mckinnon, B; Jwc, Mcnabb; Mecking, Ba; Mestayer, Md; Meyer, Ca; Mibe, T; Mikhailov, K; Minehart, R; Marco, Mirazita; Miskimen, R; Mokeev, V; Morand, L; Morrow, Sa; Moteabbed, M; Mueller, J; Mutchler, Gs; Nadel Turonski, P; Napolitano, J; Nasseripour, R; Niccolai, S; Niculescu, G; Niculescu, I; Niczyporuk, Bb; Niroula, Mr; Niyazov, Ra; Nozar, M; O'Rielly, Gv; Mikhail, Osipenko; Ostrovidov, Ai; Park, K; Pasyuk, E; Paterson, C; Philips, Sa; Pierce, J; Pivnyuk, N; Pocanic, D; Pogorelko, O; Ermanno, Polli; Pozdniakov, S; Preedom, Bm; Price, Jw; Protopopescu, D; Qin, Lm; Raue, Ba; Riccardi, G; Ricco, Giovanni; Marco, Ripani; Federico, Ronchetti; Rosner, G; Patrizia, Rossi; Rowntree, D; Rubin, Pd; Sabatie, F; Salgado Lopez Carlos Alberto,; Joseph, Santoro; Vladimir, Sapunenko; Schumacher, Ra; Serov, Vs; Sharabian, Yg; Shaw, J; Shvedunov, Nv; Skabelin, Av; Smith, Es; Smith, Lc; Sober, Di; Stavinsky, A; Stepanyan, Ss; Stepanyan, S; Stokes, Be; Stoler, P; Strauch, S; Suleiman, R; Taiuti, MAURO GINO; Taylor, S; Tedeschi, Dj; Thoma, U; Thompson, R; Tkabladze, A; Tkachenko, S; Todor, L; Tur, C; Ungaro, M; Vineyard, Mf; Vlassov, Av; Weinstein, Lb; Weygand, Dp; Williams Meurig Crispin Stowe,; Wolin, E; Wood, Mh; Yegneswaran, A; Yun, J; Zana, L; Zhang, J; Zhao, B; Zhao, Z.

doi:10.1103/PhysRevC.75.035203

New measurements of the spin structure functions of the proton and deuteron g(1)(p)(x,Q(2)) and g(1)(d)(x,Q(2)) in the nucleon resonance region are compared with extrapolations of target-mass-corrected next-to-leading-order (NLO) QCD fits to higher energy data. Averaged over the entire resonance region (W < 2 GeV), the data and QCD fits are in good agreement in both magnitude and Q(2) dependence for Q(2 >)1.7 GeV2/c(2). This "global" duality appears to result from cancellations among the prominent "local" resonance regions: in particular strong sigma(3/2) contributions in the Delta(1232) region appear to be compensated by strong sigma(1/2) contributions in the resonance region centered on 1.5 GeV. These results are encouraging for the extension of NLO QCD fits to lower W and Q(2) than have been used previously.