Deep-inelastic inclusive ep scattering at low x and a determination of alpha(s)

Authors
Adloff, C Andreev, V Andrieu, B Anthonis, T Arkadov, V Astvatsatourov, A Ayyaz, I Babaev, A Bahr, J Baranov, P Barrelet, E Bartel, W Bassler, U Bate, P Beglarian, A Behnke, O Beier, C Belousov, A Benisch, T Bergen, C Bernardi, G Berndt, T Bizot, JC Boudry, V Braunschweig, W Brisson, V Broker, HB Brown, DP Bruckner, W Bruel, P Bruncko, D Burger, J Busser, FW Bunyatyan, A Burkhardt, H Burrage, A Buschhorn, G Campbell, AJ Cao, J Carli, T Caron, S Chabert, E Clarke, D Clerbaux, B Collard, C Contreras, JG Coppens, YR Coughlan, JA Cousinou, MC Cox, BE Cozzika, G Cvach, J Dainton, JB Dau, WD Daum, K Davidsson, M Delcourt, B Delerue, N Demirchyan, R De Roeck, A De Wolf, EA Diaconu, C Dixon, P Dodonov, V Dowell, JD Droutskoi, A Duprel, C Eckerlin, G Eckstein, D Efremenko, V Egli, S Eichler, R Eisele, F Eisenhandler, E Ellerbrock, A Elsen, E Erdmann, M Erdmann, W Faulkner, PJW Favart, L Fedotov, A Felst, R Ferencei, J Ferron, S Fleischer, M Fleming, YH Flugge, G Fomenko, A Foresti, I Formanek, J Foster, JM Franke, G Gabathuler, E Gabathuler, K Garvey, J Gassner, J Gayler, J Gerhards, R Ghazaryan, S Glazov, A Goerlich, L Gogitidze, N Goldberg, M Goodwin, C Grab, C Grassler, H Greenshaw, T Grindhammer, G Hadig, T Haidt, D Hajduk, L Haynes, WJ Heinemann, B Heinzelmann, G Henderson, RCW Hengstmann, S Henschel, H Heremans, R Herrera, G Herynek, I Hildebrandt, M Hilgers, M Hiller, KH Hladky, J Hoting, P Hoffmann, D Hoprich, W Horisberger, R Hurling, S Ibbotson, M Issever, C Jacquet, M Jaffre, M Janauschek, L Jansen, DM Janssen, X Jemanov, V Jonsson, L Johnson, DP Jones, MAS Jung, H Kastli, HK Kant, D Kapichine, M Karlsson, M Karschnick, O Keil, F Keller, N Kennedy, J Kenyon, IR Kermiche, S Kiesling, C Klein, M Kleinwort, C Knies, G Koblitz, B Kolya, SD Korbel, V Kostka, P Kotelnikov, SK Koutouev, R Koutov, A Krasny, MW Krehbiel, H Kroseberg, J Kruger, K Kupper, A Kuhr, T Kurca, T Lahmann, R Lamb, D Landon, MPJ Lange, W Lastovicka, T Lebailly, E Lebedev, A Leissner, B Lemrani, R Lendermann, V Levonian, S Lindstroem, M List, B Lobodzinska, E Lobodzinski, B Loginov, A Loktionova, N Lubimov, V Luders, S Luke, D Lytkin, L Magnussen, N Mahlke-Kruger, H Malden, N Malinovski, E Malinovski, I Maracek, R Marage, P Marks, J Marshall, R Martyn, HU Martyniak, J Maxfield, SJ Mehta, A Meier, K Merkel, P Metlica, F Meyer, AB Meyer, H Meyer, J Meyer, PO Mikocki, S Milstead, D Mkrtchyan, T Mohr, R Mohrdieck, S Mondragon, MN Moreau, F Morozov, A Morris, JV Muller, K Murin, P Nagovizin, V Naroska, B Naumann, J Naumann, T Nellen, G Newman, PR Nicholls, TC Niebergall, F Niebuhr, C Nix, O Nowak, G Nunnemann, T Olsson, JE Ozerov, D Panassik, V Pascaud, C Patel, GD Perez, E Phillips, JP Pitzl, D Poschl, R Potachnikova, I Povh, B Rabbertz, K Radel, G Rauschenberger, J Reimer, P Reisert, B Reyna, D Riess, S Risler, C Rizvi, E Robmann, P Roosen, R Rostovtsev, A Royon, C Rusakov, S Rybicki, K Sankey, DPC Scheins, J Schilling, FP Schleper, P Schmidt, D Schmidt, D Schmitt, S Schoeffel, L Schoning, A Schorner, T Schroder, V Schultz-Coulon, HC Schwanenberger, C Sedlak, K Sefkow, F Shekelyan, V Sheviakov, I Shtarkov, LN Siegmon, G Sievers, P Sirois, Y Sloan, T Smirnov, P Solochenko, V Soloviev, Y Spaskov, V Specka, A Spitzer, H Stamen, R Steinhart, J Stella, B Stellberger, A Stiewe, J Straumann, U Struczinski, W Swart, M Tasevsky, M Tchernyshov, V Tchetchelnitski, S Thompson, G Thompson, PD Tobien, N Traynor, D Truol, P Tsipolitis, G Tsurin, I Turnau, J Turney, JE Tzamariudaki, E Udluft, S Usik, A Valkar, S Valkarova, A Vallee, C Van Mechelen, P Vassiliev, S Vazdik, Y Vichnevski, A von Dombrowski, S Wacker, K Wallny, R Walter, T Waugh, B Weber, G Weber, M Wegener, D Werner, M White, G Wiesand, S Wilksen, T Winde, M Winter, GG Wissing, C Wobisch, M Wollatz, H Wunsch, E Wyatt, AC Zacek, J Zalesak, J Zhang, Z Zhokin, A Zomer, F Zsembery, J zur Nedden, M
Citation
C. Adloff et al., Deep-inelastic inclusive ep scattering at low x and a determination of alpha(s), EUR PHY J C, 21(1), 2001, pp. 33-61
Citations number
105
Language
INGLESE
art.tipo
Review
Categorie Soggetti
Physics
Journal title
EUROPEAN PHYSICAL JOURNAL C
ISSN journal
1434-6044 → ACNP
Volume
21
Issue
1
Year of publication
2001
Pages
33 - 61
Database
ISI
SICI code
1434-6044(200106)21:1<33:DIESAL>2.0.ZU;2-9
Abstract
A precise measurement of the inclusive deep-inelastic c(+)p scattering cros s section is reported in the kinematic range 1.5 less than or equal to Q(2) less than or equal to 150 GeV2 and 3.10(-5) less than or equal to x less t han or equal to 0.2. The data were recorded with the H1 detector at HERA in 1996 and 1997, and correspond to an integrated luminosity of 20 pb(-1). Th e double differential cross section, from which the proton structure functi on F-2 (x, Q(2)) and the longitudinal structure function FL (x, Q2) are ext racted, is measured with typically 1% statistical and 3% systematic uncerta inties. The measured derivative (partial derivativeF(2) (x, Q(2))/partial d erivative ln Q(2))(x) is observed to rise continuously towards small x for fixed Q(2). The cross section data are combined with published III measurem ents at high Q2 for a next-to-leading order DGLAP QCD analysis. The H1 data determine the gluon momentum distribution in the range 3.10(-4) less than or equal to x less than or equal to 0.1 to within an experimental accuracy of about 3% for Q(2) = 20 GeV2. A fit of the H1 measurements and the mup da ta of the BCDMS collaboration allows the strong coupling constant alpha (s) and the gluon distribution to be simultaneously determined. A value of alp ha (s)(M-Z(2)) = 0.1150 +/-0.0017(exp)(-0.0005)(+0.0009) (model) is obtaine d in NLO, with an additional theoretical uncertainty of about +/-0.005, mai nly due to the uncertainty of the renormalisation scale.