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Photo-production of psi(2S) mesons at HERA
Authors :
Adloff, C Aid, S Anderson, M Andreev, V Andrieu, B Arkadov, V Arndt, C Ayyaz, I Babaev, A Bahr, J Ban, J Baranov, P Barrelet, E Barschke, R Bartel, W Bassler, U Beck, M Behrend, HJ Beier, C Belousov, A Berger, C Bernardi, G Bertrand-Coremans, G Beyer, R Biddulph, P Bizot, JC Borras, K Boudry, V Bourov, S Braemer, A Braunschweig, W Brisson, V Brown, DP Bruckner, W Bruel, P Bruncko, D Brune, C Bruger, J Busser, FW Buniatian, A Burke, S Buschhorn, G Calvet, D Campbell, AJ Carli, T Charlet, M Clarke, D Clerbaux, B Cocks, S Contreras, JG Cormack, C Coughlan, JA Cousinou, MC Cox, BE Cozzika, G Cussans, DG Cvach, J Dagoret, S Dainton, JB Dau, WD Daum, K David, M De Roeck, A De Wolf, EA Delcourt, B Dirkmann, M Dixon, P Dlugosz, W Donovan, KT Dowell, JD Droutskoi, A Ebert, J Ebert, TR Eckerlin, G Efremenko, V Egli, S Eichler, R Eisele, F Eisenhandler, E Elsen, E Erdmann, M Fahr, AB Favart, L Fedotov, A Felst, R Feltesse, J Ferencei, J Ferrarotto, F Flamm, K Fleischer, M Flieser, M Flugge, G Fomenko, A Formanek, J Foster, JM Franke, G Gabathuler, E Gabathuler, K Gaede, F Garvey, J Gayler, J Gebauer, M Gerhards, R Glazov, A Goerlich, L Gogitidze, N Goldberg, M Gonzalez-Pineiro, B Gorelov, I Grab, C Grassler, H Greenshaw, T Griffiths, RK Grindhammer, G Gruber, A Gruber, C Hadig, T Haidt, D Hajduk, L Haller, T Hampel, M Haynes, WJ Heinemann, B Heinzelmann, G Henderson, RCW Hengstmann, S Henschel, H Heremans, R Herynek, I Hewitt, K Hiller, KH Hilton, CD Hladky, J Hoppner, M Hoffmann, D Holton, T Horisberger, R Hudgson, VL Hutte, M Ibbotson, M Issever, C Itterbeck, H Jacquet, M Jaffre, M Janoth, J Jansen, DM Jonsson, L Johnson, DP Jung, H Kalmus, PIP Kander, M Kant, D Kathage, U Katzy, J Kaufmann, HH Kaufmann, O Kausch, M Kazarian, S 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 Kupper, A Kuster, H Kuhlen, M Kurca, T Laforge, B Lahmann, R Landon, MPJ Lange, W Langenegger, U Lebedev, A Lehner, F Lemaitre, V Levonian, S Lindstroem, M Lipinski, J List, B Lobo, G Lopez, GC Lubimov, V Luke, D Lytkin, L Magnussen, N Mahlke-Kruger, H Malinovski, E Maracek, R Marage, P Marks, J Marshall, R Martens, J Martin, G Martin, R Martyn, HU Martyniak, J Maxfield, SJ McMahon, SJ Mehta, A Meier, K Merkel, P Metlica, F Meyer, A Meyer, H Meyer, J Meyer, PO Migliori, A Mikocki, S Milstead, D Moeck, J Moreau, F Morris, JV Mroczko, E Muller, D Muller, K Murin, P Nagovizin, V Nahnhauer, R Naroska, B Naumann, T Negri, I Newman, PR Newton, D Nguyen, HK Nicholls, TC Niebergall, F Niebuhr, C Niedzballa, C Niggli, H Nowak, G Nunnemann, T Oberlack, H Olsson, JE Ozerov, D Palmen, P Panaro, E Panitch, A Pascaud, C Passaggio, S Patel, GD Pawletta, H Peppel, E Perez, E Phillips, JP Pieuchot, A Pitzl, D Poschl, R Pope, G Povh, B Rabbertz, K Reimer, P Rick, H Riess, S Rizvi, E Robmann, P Roosen, R Rosenbauer, K Rostovtsev, A Rouse, F Royon, C Ruter, K Rusakov, S Rybicki, K Sankey, DPC Schacht, P Scheins, J Schiek, S Schleif, S von Schlippe, W Schmidt, D Schmidt, G Schoeffel, L Schoning, A Schroder, V Schuhmann, E Schultz-Coulon, HC Schwab, B Sefkow, F Semenov, A Shekelyan, V Sheviakov, I Shtarkov, LN Siegmon, G Siewert, U Sirois, Y Skillicorn, IO Sloan, T Smirnov, P Smith, M Solochenko, V Soloviev, Y Specka, A Spiekermann, J Spielman, S Spitzer, H Squinabol, F Steffen, P Steinberg, R Steinhart, J Stella, B Stellberger, A Stiewe, J Stolze, K 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 Uelkes, P Usik, A Valkar, S Valkarova, A Vallee, C Van Esch, P Van Mechelen, P Vandenplas, D Vazdik, Y Verrecchia, P Villet, G Wacker, K Wagener, A Wagener, M 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 Wobisch, M Wollatz, H Wunsch, E Zacek, J Zalesak, J Zarbock, D Zhang, Z Zhokin, A Zini, P Zomer, F Zsembery, J ZurNedden, M Collaboration, H H1 Collaboration
Source :
Physics letters: B, Scopus-Elsevier
Publication Year :
1998
Abstract
Quasi-elastic (z > 0.95) photo-production of ψ(2S) mesons has been observed at HERA for photon-proton centre-of-mass energies in the range 40 to 160 GeV. The ψ(2S) mesons were identified through their decays to ℓ+ℓ- and to J/ψπ+π-, where the J/ψ subsequently decays to ℓ+ℓ-, the lepton ℓ being either a muon or an electron. The cross-section for quasi-elastic photoproduction was measured to be (18.0 ± 2.8(stat) ± 3.0(syst)) nb at a photon-proton centre-of-mass energy of 80 GeV. The ratio of the ψ(2S) to J/ψ quasi-elastic cross-sections is (0.150 ± 0.027(stat) + 0.022(syst)). © 1998 Elsevier Science B.V.
Details
Language :
English
ISSN :
03702693
Volume :
421
Issue :
1-4
Database :
OpenAIRE
Journal :
PHYSICS LETTERS B
Accession number :
edsair.doi.dedup.....d2a9109137d6fc05ea3ffc2b66a8bb1c