Leptoproduction of J/ψ
| dc.creator | Mehen, Thomas | |
| dc.date | 1998-10-26 | |
| dc.date.accessioned | 2026-07-07T04:05:34Z | |
| dc.date.available | 2026-07-07T04:05:34Z | |
| dc.description | I review the status of the extraction of NRQCD color-octet $J/ψ$ production matrix elements. Large theoretical uncertainties in current extractions from hadroproduction and photoproduction are emphasized. Leptoproduction of $J/ψ$ is calculated within the NRQCD factorization formalism. Color-octet contributions dominate the cross section, allowing for a reliable extraction of $<{\cal O}_8^{J/ψ}(^1S_0)>$ and $<{\cal O}_8^{J/ψ}(^3P_0)>$. A comparison with preliminary data from the H1 collaboration shows that leading order color-octet mechanisms agree with the measured total cross section for $Q^2 > 4m_c^2$, while the color-singlet model underpredicts the cross section by a factor of 5. | |
| dc.description | 5 pages, 2 figures, Talk given at XXIX International Conference on High Energy Physics, Vancouver | |
| dc.identifier | https://arxiv.org/abs/hep-ph/9810487 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/9810487 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/48452 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Leptoproduction of J/ψ | |
| dc.type | text |