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Inelastic Photoproduction of J/psi at low z |
| Reference |
Katja Krueger, talk presented at DIS 2000, April2000 |
| Document |
Conference paper
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| Figures |
(1)
(2a)
(2b)
(2c)
(2d)
(2b-col)
(col-wgpcomp)
(col-zcomp)
| | Tables |
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| Contact |
Beate Naroska, Andreas Meyer |
| Abstract |
A measurement of the inelastic \JPSI photoproduction cross section for $z<0.45$ via the decay $\JPSI
ightarrow \mu^+ \mu^-$ is presented. In this domain, the contribution of resolved photon processes is expected to dominate. The photoproduction cross section is measured as a function of $W_{\gamma p}$ and differential cross sections are extracted as functions of $p_{t,\psi}^2$ and $z$. The kinematic region covered is $Q^{2} < 1$~GeV$^{2}$, $1301$~GeV$^{2}$. A QCD calculation involving colour singlet and colour octet contributions is compared with the measurements. |
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