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1.	Adloff, C, et al. (author) Inelastic leptoproduction of J/psi mesons at HERA 2002 In: European Physical Journal C. Particles and Fields. - : Springer Science and Business Media LLC. - 1434-6044. ; 25:1, s. 41-53 Journal article (peer-reviewed)abstract The leptoproduction of J/psi mesons is studied in inelastic reactions for four momentorri transfers 2 < Q(2) < 100GeV(2). The data were taken with the H1 detector at the electron proton collider HERA and correspond to an integrated luminosity of 77 pb(-1). Single differential and double differential cross sections are measured with increased precision compared with previous analyses. New leading order calculations within the non-relativistic QCD factorisation approach including colour octet and colour singlet contributions are compared with the data and are found to give a reasonable description of most distributions. An exception is the shape of the distribution in the J/psi fractional energy. z, which deviates significantly from that of the data. Comparisons with photoproduction are made and the polarisation of the produced J/psi meson is analysed.

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Type of publication: journal article (1)

Type of content: peer-reviewed (1)

Author/Editor: Beckingham, M. (1); Bruncko, D. (1); Caron, S. (1); Dingfelder, J. (1); Fleischmann, P. (1); Heinemann, B. (1); show more...; Hoffmann, D. (1); Issever, C. (1); Klein, M. (1); Kroseberg, J. (1); Laycock, P. (1); Lobodzinska, E. (1); Loginov, A. (1); Mehta, A. (1); Meier, K. (1); Meyer, J. (1); Naumann, T. (1); Rizvi, E. (1); Schmitt, S. (1); Schoeffel, L. (1); Schwanenberger, C. (1); South, D. (1); Stamen, R. (1); Tsipolitis, G. (1); Valkar, S. (1); Vest, A. (1); Wessels, M. (1); Zhang, Z. (1); Diaconu, C. (1); zur Nedden, M. (1); Eisenhandler, E. (1); Ferencei, J. (1); Greenshaw, T. (1); Ibbotson, M. (1); Kluge, T. (1); Lendermann, V. (1); Garvey, J. (1); Haller, J. (1); Zhokin, A. (1); Astvatsatourov, A. (1); Collard, C. (1); Koblitz, B. (1); Kostka, P. (1); Lebedev, A. (1); Kennedy, J. (1); Levonian, S. (1); Marshall, R. (1); Tomasz, F. (1); Andrieu, B. (1); Jaffre, M. (1); show less...

University: Lund University (1)

Language: English (1)

Research subject (UKÄ/SCB): Natural sciences (1)

Year: 2002 (1)

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