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Diffractive photoproduction of J/psi mesons with large momentum transfer at HERA

Aktas, A; Andreev, V; Anthonis, T; Astvatsatourov, A; Babaev, A; Backovic, S; Bahr, J; Baranov, P; Barrelet, E and Bartel, W, et al. (2003) In Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics 568(3-4). p.205-218
Abstract
The diffractive photoproduction of J/psi mesons is measured with the HI detector at the ep collider HERA using an integrated luminosity of 78 pb(-1). The differential cross section dsigma(gammap --> J/psiY)/dt is studied in the range 2 < < 30 GeV2, where t is the square of the four-momentum transferred at the proton vertex. The cross section is also presented as a function of the photon-proton centre-of-mass energy W-gammap in three t intervals, spanning the range 50 < W-gammap < 200 GeV. A fast rise of the cross section with W-gammap is observed for each t range and the slope for the effective linear Pomeron trajectory is measured to be alpha' = -0.0135 +/- 0.0074(stat.) +/- 0.0051(syst.) GeV-2. The measurements are... (More)
The diffractive photoproduction of J/psi mesons is measured with the HI detector at the ep collider HERA using an integrated luminosity of 78 pb(-1). The differential cross section dsigma(gammap --> J/psiY)/dt is studied in the range 2 < < 30 GeV2, where t is the square of the four-momentum transferred at the proton vertex. The cross section is also presented as a function of the photon-proton centre-of-mass energy W-gammap in three t intervals, spanning the range 50 < W-gammap < 200 GeV. A fast rise of the cross section with W-gammap is observed for each t range and the slope for the effective linear Pomeron trajectory is measured to be alpha' = -0.0135 +/- 0.0074(stat.) +/- 0.0051(syst.) GeV-2. The measurements are compared with perturbative QCD models based on BFKL and DGLAP evolution. The data are found to be compatible with s-channel helicity conservation. (C) 200 Published by Elsevier B.V. (Less)
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Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics
volume
568
issue
3-4
pages
205 - 218
publisher
Elsevier
external identifiers
  • wos:000184973600003
  • scopus:0042467747
ISSN
0370-2693
DOI
10.1016/j.physletb.2003.06.056
language
English
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yes
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9c2283e5-caf2-4eb5-b7b8-577721c82bf3 (old id 301832)
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2007-08-22 08:31:17
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@article{9c2283e5-caf2-4eb5-b7b8-577721c82bf3,
  abstract     = {The diffractive photoproduction of J/psi mesons is measured with the HI detector at the ep collider HERA using an integrated luminosity of 78 pb(-1). The differential cross section dsigma(gammap --&gt; J/psiY)/dt is studied in the range 2 &lt; 	 &lt; 30 GeV2, where t is the square of the four-momentum transferred at the proton vertex. The cross section is also presented as a function of the photon-proton centre-of-mass energy W-gammap in three t intervals, spanning the range 50 &lt; W-gammap &lt; 200 GeV. A fast rise of the cross section with W-gammap is observed for each t range and the slope for the effective linear Pomeron trajectory is measured to be alpha' = -0.0135 +/- 0.0074(stat.) +/- 0.0051(syst.) GeV-2. The measurements are compared with perturbative QCD models based on BFKL and DGLAP evolution. The data are found to be compatible with s-channel helicity conservation. (C) 200 Published by Elsevier B.V.},
  author       = {Aktas, A and Andreev, V and Anthonis, T and Astvatsatourov, A and Babaev, A and Backovic, S and Bahr, J and Baranov, P and Barrelet, E and Bartel, W and Baumgartner, S and Becker, J and Beckingham, M and Beglarian, A and Behnke, O and Behrendt, O and Belousov, A and Berger, C and Berndt, T and Bizot, JC and Bohme, J and Boenig, MO and Boudry, V and Bracinik, J and Braunschweig, W and Brisson, V and Broker, HB and Brown, DP and Bruncko, D and Busser, FW and Bunyatyan, A and Burrage, A and Buschhorn, G and Bystritskaya, L and Campbell, AJ and Caron, S and Cassol-Brunner, F and Chekelian, V and Clarke, D and Collard, C and Contreras, JG and Coppens, YR and Coughlan, JA and Cousinou, MC and Cox, BE and Cozzika, G and Cvach, J and Dainton, JB and Dau, WD and Daum, K and Davidsson, Mattias and Delcourt, B and Delerue, N and Demirchyan, R and De Roeck, A and De Wolf, EA and Diaconu, C and Dingfelder, J and Dixon, P and Dodonov, V and Dowell, JD and Dubak, A and Duprel, C and Eckerlin, G and Efremenko, V and Egli, S and Eichler, R and Eisele, F and Ellerbrock, M and Elsen, E and Erdmann, M and Erdmann, W and Faulkner, PJW and Favart, L and Fedotov, A and Felst, R and Ferencei, J and Ferron, S and Fleischer, M and Fleischmann, R and Fleming, YH and Flucke, G and Flugge, G and Fomenko, A and Foresti, I and Formanek, J and Franke, G and Frising, G and Gabathuler, E and Gabathuler, K and Garvey, J and Gassner, J and Gayler, J and Gerhards, R and Gerlich, C and Ghazaryan, S and Goerlich, L and Gogitidze, N and Gorbounov, S and Grab, C and Grabski, V and Grassler, H and Greenshaw, T and Grindhammer, G and Haidt, D and Hajduk, L and Haller, J and Heinemann, B and Heinzelmann, G and Henderson, RCW and Henschel, H and Henshaw, O and Heremans, R and Herrera, G and Herynek, I and Hildebrandt, M and Hilgers, M and Hiller, KH and Hladky, J and Hoting, P and Hoffmann, D and Horisberger, R and Hovhannisyan, A and Ibbotson, M and Jacquet, M and Janauschek, L and Janssen, X and Jemanov, V and Jönsson, Leif and Johnson, C and Johnson, DP and Jones, MAS and Jung, Hannes and Kant, D and Kapichine, M and Karlsson, Martin and Katzy, J and Keil, R and Keller, N and Kennedy, J and Kenyon, IR and Kiesling, C and Klein, M and Kleinwort, C and Kluge, T and Knies, G and Koblitz, B and Kolya, SD and Korbel, V and Kostka, P and Koutouev, R and Koutov, A and Kroseberg, J and Kruger, K and Kueckens, J and Kuhr, T and Landon, MPJ and Lange, W and Lastovika, T and Laycock, P and Lebedev, A and Leissner, B and Lemrani, R and Lendermann, V and Levonian, S and List, B and Lobodzinska, E and Loktionova, N and Lopez-Fernandez, R and Lubimov, V and Lueders, H and Luders, S and Luke, D and Lytkin, L and Makankine, A and Malden, N and Malinovski, E and Mangano, S and Marage, P and Marks, J and Marshall, R and Martyn, HU and Martyniak, J and Maxfield, SJ and Meer, D and Mehta, A and Meier, K and Meyer, AB and Meyer, H and Meyer, J and Michine, S and Mikocki, S and Milstead, D and Mohrdieck, S and Moreau, F and Morozov, A and Morris, JV and Muller, K and Murin, P and Nagovizin, V and Naroska, B and Naumann, J and Naumann, T and Newman, PR and Niebergall, F and Niebuhr, C and Nikitin, D and Nowak, G and Nozicka, M and Olivier, B and Olsson, JE and Ozerov, D and Panassik, V and Pascaud, C and Patel, GD and Peez, M and Perez, E and Petrukhin, A and Phillips, JP and Pitzl, D and Poschl, R and Povh, B and Raicevic, N and Rauschenberger, J and Reimer, P and Reisert, B and Risler, C and Rizvi, E and Robmann, P and Roosen, R and Rostovtsev, A and Rusakov, S and Rybicki, K and Sankey, DPC and Sauvan, E and Schatzel, S and Scheins, J and Schilling, FP and Schleper, P and Schmidt, D and Schmidt, S and Schmitt, S and Schneider, M and Schoeffel, L and Schoning, A and Schroder, V and Schultz-Coulong, HC and Schwanenberger, C and Sedlak, K and Sefkow, F and Sheviakov, I and Shtarkov, LN and Sirois, Y and Sloan, T and Smirnov, P and Soloviev, Y and South, D and Spaskov, V and Specka, A and Spitzer, H and Stamen, R and Stella, B and Stiewe, J and Strauch, I and Straumann, U and Thompson, G and Thompson, PD and Tomasz, F and Traynor, D and Truol, P and Tsipolitis, G and Tsurin, I and Turnau, J and Turney, JE and Tzamariudaki, E and Uraev, A and Urban, M and Usik, A and Valkar, S and Valkarova, A and Vallee, C and Van Mechelen, P and Trevino, AV and Vassiliev, S and Vazdik, Y and Veelken, C and Vest, A and Vichnevski, A and Volchinski, V and Wacker, K and Wagner, J and Wallny, R and Waugh, B and Weber, G and Weber, R and Wegener, D and Werner, C and Werner, N and Wessels, M and Wessling, B and Winde, M and Winter, GG and Wissing, C and Woehrling, EE and Wunsch, E and Wyatt, AC and Zacek, J and Zalesak, J and Zhang, Z and Zhokin, A and Zomer, F and zur Nedden, M},
  issn         = {0370-2693},
  language     = {eng},
  number       = {3-4},
  pages        = {205--218},
  publisher    = {Elsevier},
  series       = {Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics},
  title        = {Diffractive photoproduction of J/psi mesons with large momentum transfer at HERA},
  url          = {http://dx.doi.org/10.1016/j.physletb.2003.06.056},
  volume       = {568},
  year         = {2003},
}