Measurement of elastic electroproduction of phi 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 Beier, C Belousov, A Benisch, T Berger, C Bernardi, G Berndt, T Bizot, JC Borras, K 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 Coughlan, JA Cousinou, MC Cox, BE Cozzika, G Cvach, J Dainton, JB Dau, WD Daum, K David, M 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, M Elsen, E Erdmann, M Erdmann, W Faulkner, PJW Favart, L Fedotov, A Felst, R Ferencei, J Ferron, S Fleischer, M 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 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 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 Kaufmann, O Kausch, M 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 Krasny, MW Krehbiel, H Kroseberg, J Krucker, D Kruger, K Kupper, A Kuhr, T Kurca, T Kutuev, R Lachnit, W Lahmann, R Lamb, D Landon, MPJ Lange, W Lastovicka, T Lebedev, A Leissner, B Lemrani, R Lendermann, V Levonian, S Lindstroem, M Lobodzinska, E Lobodzinski, B 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, 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 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 Schoeffel, L Schoning, A Schorner, T Schroder, V Schultz-Coulon, HC 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 Turnau, J Turney, JE Tzamariudaki, E Udluft, S Usik, A Valkar, S Valkarova, A Vallee, C Van Mechelen, P Vazdik, Y von Dombrowski, S Wacker, K Wallny, R Walter, T Waugh, B Weber, G Weber, M Wegener, D Wegner, A Wengler, T Warner, 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., Measurement of elastic electroproduction of phi mesons at HERA, PHYS LETT B, 483(4), 2000, pp. 360-372
Citations number
27
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICS LETTERS B
ISSN journal
0370-2693 → ACNP
Volume
483
Issue
4
Year of publication
2000
Pages
360 - 372
Database
ISI
SICI code
0370-2693(20000622)483:4<360:MOEEOP>2.0.ZU;2-D
Abstract
The elastic electroproduction of phi mesons is studied at HERA with the H1 detector for photon virtualities 1 < Q(2) < 15 GeV2 and hadronic centre of mass energies 40 < W < 130 GeV. The Q(2) and t dependences of the cross sec tion are extracted (t being the square of the four-momentum transfer to the target proton). When plotted as function of (Q(2) + M-v(2)) and scaled by the appropriate SU(5) quark charge factor, the phi meson cross section agre es within errors with the cross sections of the vector mesons V = rho, omeg a and J/psi. A detailed analysis is performed of the phi meson polarisation state and the ratio of the production cross sections for longitudinally an d transversely polarised phi mesons is determined. A small but significant violation of s-channel helicity conservation (SCKC) is observed. (C) 2000 E lsevier Science B.V. All rights reserved.