Inelastic J/psi electroproduction in e-p collisions
| dc.creator | Balbi, P. | |
| dc.creator | Giovannini, A. | |
| dc.date | 2002-12-12 | |
| dc.date.accessioned | 2026-07-07T03:48:49Z | |
| dc.date.available | 2026-07-07T03:48:49Z | |
| dc.description | Following HERA experiments our interest is focused, in the present paper, on charmonium production in lepton-proton collisions. Inelastic J/ψelectroproduction is quite difficult to be measured due to the low rates of events; almost all experimental studies are indeed performed in photoproduction regime. J/ψresonance is considered as the product of the hadronization of a c \bar{c} pair generated via boson-gluon fusion. The leading order contribution to the differential cross section, with respect to virtual photon-proton center of mass energy W and transferred four-momentum squared Q^2, is written as the sum of two terms related to a colour singlet and a colour octet c \bar{c} pair production respectively. This expression contains two-gluons contributions and depends on three parameters; two of them are related to the hadronization fractions in charmonium states for the c \bar{c} pair (colour singlet and colour octet), while the third parameter takes into accout possible ``hot-spot'' effects. The values of these parameters are estimated by mean of a fit to the experimental data collected by H1 collaboration at HERA. By using different gluon densities, different sets of parameters are obtained, always with good fits. | |
| dc.description | 21 pages, 6 diagrams, 8 figures | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0212168 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0212168 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/42166 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Inelastic J/psi electroproduction in e-p collisions | |
| dc.type | text |