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Elastic electroproduction of rho mesons at HERA

Authors

Adloff, C Andreev, V Andrieu, B Arkadov, V Astvatsatourov, A 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 Burrage, A Buschhorn, G Calvet, D Campbell, AJ Carli, T Chabert, E Charlet, M Clarke, D Clerbaux, B 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 Eichler, R Eisele, F Eisenhandler, E Elsen, E Enzenberger, M Erdmann, M Fahr, AB Faulkner, PJW 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 Hampel, M Haustein, V Haynes, WJ Heinemann, B Heinzelmann, G Henderson, RCW Hengstmann, S Henschel, H Heremans, R Herynek, I Hewitt, K Hiller, KH Hilton, CD Hladky, J Hoffmann, D Horisberger, R Hurling, S Ibbotson, M Issever, C Jacquet, M Jaffre, M Janauschek, L Jansen, DM Jonsson, L Johnson, DP Jones, M Jung, H Kastli, HK Kander, M Kant, D Kapichine, M Karlsson, M Karschnik, O Katzy, J Kaufmann, O Kausch, M Keller, N 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 Lachnit, W Lahmann, R Lamb, D Landon, MPJ Lange, W Langenegger, U Lebedev, A Lehner, F Lemaitre, V Lemrani, R Lendermann, V Levonian, S Lindstroem, M Lobo, G Lobodzinska, E 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 McMahon, TR Mehta, A Meier, K Merkel, P Metlica, F Meyer, A Meyer, A Meyer, H Meyer, J Meyer, PO Mikocki, S Milstead, D Mohr, R Mohrdieck, S Mondragon, M Moreau, F Morozov, A Morris, JV Muller, D Muller, K Murin, P Nagovizin, V Naroska, B Naumann, J Naumann, T Negri, I Newman, PR Nguyen, HK Nicholls, TC Niebergall, F Niebuhr, C Niedzballa, C Niggli, H 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 Reyna, D 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 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 Spitzer, H Squinabol, F Stamen, R 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 Traynor, D 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 White, G Wiesand, S Wilksen, T Willard, S Winde, M Winter, GG Wissing, C Wittek, C Wittmann, E Wobisch, M Wollatz, H Wunsch, E Zacek, J Zalesak, J Zhang, Z Zhokin, A Zini, P Zomer, F Zsembery, J zur Nedden, M

Citation

C. Adloff et al., Elastic electroproduction of rho mesons at HERA, EUR PHY J C, 13(3), 2000, pp. 371-396

Citations number

Categorie Soggetti

Physics

Journal title

EUROPEAN PHYSICAL JOURNAL C

ISSN journal

14346044 → ACNP

Volume

Issue

Year of publication

2000

Pages

371 - 396

Database

ISI

SICI code

1434-6044(200004)13:3<371:EEORMA>2.0.ZU;2-1

Abstract

The elastic electroproduction of rho mesons is studied at HERA with the H1 detector for a photon virtuality in the range 1 < Q(2) < 60 GeV2 and for a hadronic centre of mass energy in the range 30 < W < 140 GeV. The shape of the (pi pi) mass distribution in the rho resonance region is measured as a function of Q(2). The full set of rho spin density matrix elements is deter mined, and evidence is found for a helicity flip amplitude at the level of 8 +/- 3% of the non-flip amplitudes. Measurements are presented of the depe ndence of the cross section on Q(2), W and t (the four-momentum transfer sq uared to the proton). They suggest that, especially at large Q(2), the gamm a*p cross section develops a stronger W dependence than that expected from the behaviour of elastic and total hadron-hadron cross sections.