Measurement of leading proton and neutron production in deep-inelastic scattering at HERA

Authors
Adloff, C Anderson, M Andreev, V Andrieu, B Arkadov, V Arndt, C Ayyaz, I Babaev, A Bahr, J Baranov, P Barrelet, E Bartel, W Bassler, U Bate, P Beglarian, A Behnke, O Behrend, HJ Beier, C Belousov, A Berger, C Bernardi, G Berndt, T Bertrand-Coremans, G Biddulph, P Bizot, JC Boudry, V Braunschweig, W Brisson, V Brown, DP Bruckner, W Bruel, P Bruncko, D Burger, J Busser, FW Buniatian, A Burke, S Buschhorn, G Calvet, D Campbell, AJ Carli, T Chabert, E Charlet, M Clarke, D Clerbaux, B Cocks, S Contreras, JG Cormack, C Coughlan, JA Cousinou, MC Cox, BE Cozzika, G Cvach, J Dainton, JB Dau, WD Daum, K David, M Davidsson, M De Roeck, A De Wolf, EA Delcourt, B Demirchyan, R Diaconu, C Dirkmann, M Dixon, P Dlugosz, W Donovan, KT Dowell, JD Droutskoi, A Ebert, J Eckerlin, G Eckstein, D Efremenko, V Egli, S Eicher, R Eisele, F Eisenhandler, E Elsen, E Enzenberger, M Erdmann, M Fahr, AB Favart, L Fedotov, A Felst, R Feltesse, J Ferencei, J Ferrarotto, F Fleischer, M Flugge, G Fomenko, A Formanek, J Foster, JM Franke, G Gabathuler, E Gabathuler, K Gaede, F Garvey, J Gassner, J Gayler, J Gerhards, R Ghazaryan, S Glazov, A Goerlich, L Gogitidze, N Goldberg, M Gorelov, I Grab, C Grassler, H Greenshaw, T Griffiths, RK Grindhammer, G Hadig, T Haidt, D Hajduk, L Haller, T Hampel, M Haustein, V Haynes, WJ Heinemann, B Heinzelmann, G Henderson, RCW Hengstmaan, S Henschel, H Heremans, R Herynek, I Hewitt, K Hiller, KH Hilton, CD Hladky, J Hoffmann, D Holtom, T Horisberger, R Hurling, S Ibbotson, M Issever, C Jacquet, M Jaffre, M Jansen, DM Jonsson, L Johnson, DP Jung, H Kastli, HK Kander, M Kant, D Kapichine, M Karlsson, M Karschnik, O Katzy, J Kaufmann, O Kausch, M Kenyon, IR Kermiche, S Keuker, C Kiesling, C Klein, M Kleinwort, C Knies, G Kohne, JH Kolanoski, H Kolya, SD Korbel, V Kostka, P Kotelnikov, SK Kramerkamper, T Krasny, MW Krehbiel, H Krucker, D Kruger, K Kupper, A Kuster, H Kuhlen, M Kurca, T Lahmann, R Landon, MPJ Lange, W Langenegger, U Lebedev, A Lehner, F Lemaitre, V Lendermann, V Levonian, S Lindstroem, M List, B Lobo, G Lobodzinska, E Lubimov, V Luders, S Luke, D Lytkin, L Magnussen, N Mahlke-Kruger, H Malinovski, E Maracek, R Marage, P Marks, J Marshall, R Martin, G Martyn, HU Martyniak, J Maxfield, SJ McMahon, SJ McMahon, TR Mehta, A Meier, K Merkel, P Metlica, F Meyer, A Meyer, A Meyer, H Meyer, J Meyer, PO Mikocki, S Milstead, D Moeck, J Mohr, R Mohrdieck, S Moreau, F Morris, JV Muller, D Muller, K Murin, P Nagovizin, V Naroska, B Naumann, T Negri, I Newman, PR Nguyen, HK Nicholls, TC Niebergall, F Niebuhr, C Niedzballa, C Niggli, H Nikitin, D Nix, O Nowak, G Nunnemann, T Oberlack, H Olsson, JE Ozerov, D Palmen, P Panassik, V Pascaud, C Passaggio, S Patel, GD Pawletta, H Perez, E Phillips, JP Pieuchot, A Pitzl, D Poschl, R Pope, G Povh, B Rabbertz, K Rauschenberger, J Reimer, P Reisert, B Rick, H Riess, S Rizvi, E Robmann, P Roosen, R Rosenbauer, K Rostovtsev, A Rouse, F Royon, C Rusakov, S Rybicki, K Sankey, DPC Schacht, P Scheins, J Schilling, FP Schleif, S Schleper, P Schmidt, D Schmidt, D Schoeffel, L Schroder, V Schultz-Coulon, HC Schwab, B Sefkow, F Semenov, A Shekelyan, V Sheviakov, I Shtarkov, LN Siegmon, G Sirois, Y Sloan, T Smirnov, P Smith, M Solochenko, V Soloviev, Y Spaskov, V Specka, A Spiekermann, J Spitzer, H Squinabol, F Steffen, P Steinberg, R Steinhart, J Stella, B Stellberger, A Stiewe, J Straumann, U Struczinski, W Sutton, JP Swart, M Tapprogge, S Tasevsky, M Tchernyshov, V Tchetchelnitski, S Theissen, J Thompson, G Thompson, PD Tobien, N Todenhagen, R Truol, P Tsipolitis, G Turnau, J Tzamariudaki, E Udluft, S Usik, A Valkar, S Valkarova, A Vallee, C Van Esch, P Van Haecke, A Van Mechelen, P Vazdik, Y Villet, G Wacker, K Wallny, R Walter, T Waugh, B Weber, G Weber, M Wegener, D Wegner, A Wengler, T Werner, M West, LR Wiesand, S Wilksen, T Willard, S Winde, M Winter, GG Wittek, C Wittmann, E Wobisch, M Wollatz, H Wunsch, E Zacek, J Zalesak, J Zhang, Z Zhokin, A Zini, P Zomer, F Zsembery, J zurNedden, M
Citation
C. Adloff et al., Measurement of leading proton and neutron production in deep-inelastic scattering at HERA, EUR PHY J C, 6(4), 1999, pp. 587-602
Citations number
63
Categorie Soggetti
Physics
Journal title
EUROPEAN PHYSICAL JOURNAL C
ISSN journal
14346044 → ACNP
Volume
6
Issue
4
Year of publication
1999
Pages
587 - 602
Database
ISI
SICI code
1434-6044(199901)6:4<587:MOLPAN>2.0.ZU;2-V
Abstract
Deep-inelastic scattering events with a leading baryon have been detected b y the I-IL experiment at HERA using a forward proton spectrometer and a for ward neutron calorimeter. Semi-inclusive cross sections have been measured in the kinematic region 2 less than or equal to Q(2) less than or equal to 50GeV(2), 6 x 10(-5) less than or equal to x less than or equal to 6 x 10(- 3) and baryon p(T) less than or equal to 200 MeV, for events with a final-s tate proton with energy 580 less than or equal to E' less than or equal to 740 GeV, or a neutron with energy E' greater than or equal to 160 GeV. The measurements are used to test production models and factorization hypothese s. A Regge model of leading baryon production which consists of pion, pomer on and secondary reggeon exchanges gives an acceptable description of both semi-inclusive cross sections in the region 0.7 less than or equal to E'/E- p less than or equal to 0.9, where E-p is the proton beam energy. The leadi ng neutron data are used to estimate for the first time the structure funct ion of the pion at small Bjorken-x.