Inelastic leptoproduction of J/psi mesons at HERA
Research output: Contribution to journal › Article
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.
|Research areas and keywords||
Subject classification (UKÄ) – MANDATORY
|Journal||European Physical Journal C. Particles and Fields|
|Publication status||Published - 2002|
The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Particle Physics (011013002), Chemical Physics (S) (011001060)