ZEUS results on the measurement and phenomenology of F2 at low χ and low Q2

Breitweg, J. et al. (1999) ZEUS results on the measurement and phenomenology of F2 at low χ and low Q2. European Physical Journal C, 7(4), pp. 609-630. (doi: 10.1007/s100520050432)

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Publisher's URL: http://dx.doi.org/10.1007/s100520050432

Abstract

Measurements of the proton structure function F<sub>2</sub> for 0.6 < Q<sup>2</sup> < 17 GeV<sup>2</sup> and 1.2x10<sup>−5</sup> < x < 1.9x10<sup>−3</sup> from ZEUS 1995 shifted vertex data are presented. From ZEUS F<sub>2</sub> data the slopes <i>d</i>F<sub>2</sub>=<i>d</i> ln Q<sup>2</sup> at fixed <i>x</i> and <i>d</i> ln F<sub>2</sub>=<i>d</i> ln(1/<i>x</i>) for <i>x</i> < 0.01 at fixed Q<sup>2</sup> are derived. For the latter, E665 data are also used. The transition region in Q<sup>2</sup> is explored using the simplest non-perturbative models and NLO QCD. The data at very low Q<sup>2</sup> ≤ 0.65 GeV<sup>2</sup> are described successfully by a combination of generalised vector meson dominance and Regge theory. From a NLO QCD fit to ZEUS data the gluon density in the proton is extracted in the range 3x10<sup>−5</sup> < <i>x</i> < 0.7. Data from NMC and BCDMS constrain the fit at large <i>x</i>. Assuming the NLO QCD description to be valid down to Q<sup>2</sup> ∼ 1 GeV<sup>2</sup>, it is found that the <i>qq</i> sea distribution is still rising at small <i>x</i> and the lowest Q<sup>2</sup> values whereas the gluon distribution is strongly suppressed.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Doyle, Professor Anthony and Saxon, Professor David and Bussey, Dr Peter and Skillicorn, Professor Ian
Authors: Breitweg, J., Chekanov, S., Derrick, M., Krakauer, D., Magill, S., Mikunas, D., Musgrave, B., Repond, J., Stanek, R., Talaga, R.L., Yoshida, R., Zhang, H., Mattingly, M.C.K., Abbiendi, G., Anselmo, F., Antonioli, P., Bari, G., Basile, M., Bellagamba, L., Boscherini, D., Bruni, A., Bruni, G., Romeo, G.C., Castellini, G., Cifarelli, L., Cindolo, F., Contin, A., Coppola, N., Corradi, M., De Pasquale, S., Giusti, P., Iacobucci, G., Laurenti, G., Levi, G., Margotti, A., Massam, T., Nania, R., Palmonari, F., Amelung, C., Bornheim, A., Brock, I., Coboken, K., Crittenden, J., Deffner, R., Eckert, M., Grothe, M., Hartmann, H., Heinloth, K., Heinz, L., Hilger, E., Jakob, H.-P., Kappes, A., Katz, U.F., Kerger, R., Paul, E., Pfeiffer, M., Schnurbusch, H., Weber, A., Wieber, H., Bailey, D.S., Barret, O., Cottingham, W.N., Foster, B., Hall-Wilton, R., Heath, G.P., Heath, H.F., McFall, J.D., Piccioni, D., Roff, D.G., Scott, J., Tapper, R.J., Capua, M., Iannotti, L., Mastroberardino, A., Schioppa, M., Susinno, G., Kim, J.Y., Lee, J.H., Lim, I.T., Pac, M.Y., Caldwell, A., Cartiglia, N., Jing, Z., Liu, W., Mellado, B., Parsons, J.A., Ritz, S., Sampson, S., Sciulli, F., Straub, P.B., Zhu, Q., Borzemski, P., Chwastowski, J., Eskreys, A., Figiel, J., Klimek, K., Przybycien, M.B., Zawiejski, L., Adamczyk, L., Bednarek, B., Bukowy, M., Czermak, A.M., Jelen, K., Kisielewska, D., Kowalski, T., Rulikowska-Zarebska, E., Suszycki, L., Zajac, J., Dulinski, Z., Kotanski, A., Bauerdick, L.A.T., Behrens, U., Beier, H., Bienlein, J.K., Desler, K., Drews, G., Fricke, U., Goebel, F., Gottlicher, P., Graciana, R., Haas, T., Hain, W., Hartner, G.F., Hasell, D., Hebbel, K., Johnson, K.F., Kasemann, M., Koch, W., Kotz, U., Kowalski, H., Lindemann, L., Lohr, B., Martinez, M., Milewski, J., Milite, M., Monteiro, T., Notz, D., Pellegrino, A., Pelucchi, F., Piotrzkowski, K., Rohde, M., Roldan, J., Ryan, J.J., Saull, P.R.B., Savin, A.A., Schneekloth, U., Schwarzer, O., Selonke, F., Sievers, M., Stonjek, S., Surrow, B., Tassi, E., Westphal, D., Wolf, G., Wollmer, U., Youngman, C., Zeuner, W., Burow, B.D., Coldewey, C., Grabosch, H.J., Meyer, A., Schlenstedt, S., Barbagli, G., Gallo, E., Pelfer, P., Maccarrone, G., Votano, L., Bamberger, A., Eisenhardt, S., Markun, P., Raach, H., Trefzger, T., Wolfle, S., Bromley, J., Brook, N.H., Bussey, P.J., Doyle, A.T., Lee, S.W., Macdonald, N., McCance, G.J., Saxon, D.H., Sinclair, L.E., Skillicorn, I.O., Strickland, E., Waugh, R., Bohnet, I., Gendner, N., Holm, U., Meyer-Larsen, A., Salehi, H., Wick, K., Garfagnini, A., Gialas, I., Gladilin, L.K., Kcira, D., Klanner, R., Lohrmann, E., Poelz, G., Zetsche, F., Bacon, T.C., Butterworth, I., Cole, J.E., Howell, G., Lamberti, L., Long, K.R., Miller, D.B., Pavel, N., Prinias, A., Sedgbeer, J.K., Sideris, D., Walker, R., Mallik, U., Wang, S.M., Wu, J.T., Cloth, P., Filges, D., Ishii, T., Kuze, M., Suzuki, I., Tokushuku, K., Yamada, S., Yamauchi, K., Yamazaki, Y., Hong, S.J., Lee, S.B., Nam, S.W., Park, S.K., Lim, H., Park, I.H., Son, D., Barreiro, F., Fernandez, J.P., Garcia, G., Glasman, C., Hernandez, J.M., Hervas, L., Labarga, L., del Peso, J., Puga, J., Redondo, I., Terron, J., de Troconiz, J.F., Corriveau, F., Hanna, D.S., Hartmann, J., Murray, W.N., Ochs, A., Riveline, M., Stairs, D.G., St-Laurent, M., Tsurugai, T., Bashkirov, V., Dolgoshein, B.A., Stifutkin, A., Bashindzhagyan, G.L., Ermolov, P.F., Golubkov, Y.A., Khein, L.A., Korotkova, N.A., Korzhavina, I.A., Kuzmin, V.A., Lukina, O.Y., Proskuryakov, A.S., Shcheglova, L.M., Solomin, A.N., Zotkin, S.A., Bokel, C., Botje, M., Brummer, N., Engelen, J., Koffeman, E., Kooijman, P., van Sighem, A., Tiecke, H., Tuning, N., Verkerke, W., Vossebeld, J., Wiggers, L., de Wolf, E., Acosta, D., Bylsma, B., Durkin, L.S., Gilmore, J., Ginsburg, C.M., Kim, C.L., Ling, T.Y., Nylander, P., Romanowski, T.A., Blaikley, H.E., Cashmore, R.J., Cooper-Sarkar, A.M., Devenish, R.C.E., Edmonds, J.K., Grobe-Kentter, J., Harnew, N., Nath, C., Noyes, V.A., Quadt, A., Ruske, O., Tickner, J.R., Walczak, R., Waters, D.S., Bertolin, A., Brugnera, R., Carlin, R., Dal Corso, F., Dosselli, U., Limentani, S., Morandin, M., Posocco, M., Stanco, L., Stroili, R., Voci, C., Oh, B.Y., Okrasinski, J.R., Toothacker, W.S., Whitmore, J.J., Iga, Y., D'Agostini, G., Marini, G., Nigro, A., Raso, M., Hart, J.C., McCubbin, N.A., Shah, T.P., Epperson, D., Heusch, C., Rahn, J.T., Sadrozinski, H.F.-W., Seiden, A., Wichmann, R., Williams, D.C., Abramowicz, H., Briskin, G., Dagan, S., Kananov, S., Levy, A., Abe, T., Fusayasu, T., Inuzuka, M., Nagano, K., Umemori, K., Yamashita, T., Hamatsu, R., Hirose, T., Homma, K., Kitamura, S., Matsushita, T., Nishimura, T., Arneodo, M., Cirio, R., Costa, M., Ferrero, M.I., Maselli, S., Monaco, V., Peroni, C., Petrucci, M.C., Ruspa, M., Sacchi, R., Solano, A., Staiano, A., Dardo, M., Bailey, D.C., Fagerstroem, C.-P., Galea, R., Koop, T., Levman, G.M., Martin, J.F., Orr, R.S., Polenz, S., Sabetfakhri, A., Simmons, D., Butterworth, J.M., Catterall, C.D., Hayes, M.E., Heaphy, E.A., Jones, T.W., Lane, J.B., Saunders, R.L., Sutton, M.R., Wing, M., Ciborowski, J., Grzelak, G., Nowak, R.J., Pawlak, J.M., Pawlak, R., Smalska, B., Tymieniecka, T., Wroblewski, A.K., Zakrzewski, J.A., Zarnecki, A.F., Adamus, M., Deppe, O., Eisenberg, Y., Hochman, D., Karshon, U., Badgett, W.F., Chapin, D., Cross, R., Foudas, C., Mattingly, S., Reeder, D.D., Smith, W.H., Vaiciulis, A., Wildschek, T., Wodarczyk, M., Deshpande, A., Dhawan, S., Hughes, V.W., Bhadra, S., Frisken, W.R., Khakzad, M., and Schmidke, W.B.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:European Physical Journal C
ISSN:1434-6044
ISSN (Online):1434-6052

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