Elastic J/ψ production at HERA
- Publikationstyp:
- Zeitschriftenaufsatz
- Metadaten:
-
- DOI
- 10.1140/epjc/s2006-02519-5
- eISSN
- 1434-6052
- ISSN
- 1434-6044
- Ausgabe der Veröffentlichung
- 3
- Zeitschrift
- The European Physical Journal C
- Sprache
- en
- Online publication date
- 2006
- Paginierung
- 585 - 603
- Datum der Veröffentlichung
- 2006
- Status
- Published
- Herausgeber
- Springer Science and Business Media LLC
- Herausgeber URL
- http://dx.doi.org/10.1140/epjc/s2006-02519-5
- Datum der Datenerfassung
- 2019
- Titel
- Elastic J/ψ production at HERA
- Ausgabe der Zeitschrift
- 46
Datenquelle: Crossref
- Andere Metadatenquellen:
-
- Abstract
- Cross sections for elastic production of J/Psi mesons in photoproduction and electroproduction are measured in electron proton collisions at HERA using an integrated luminosity of 55 pb^{-1}. Results are presented for photon virtualities Q^2 up to 80 GeV^2. The dependence on the photon-proton centre of mass energy W_{gamma p} is analysed in the range 40 < \Wgp < 305 GeV in photoproduction and 40 < \Wgp < 160 GeV in electroproduction. The \Wgp dependences of the cross sections do not change significantly with Q^2 and can be described by models based on perturbative QCD. Within such models, the data show a high sensitivity to the gluon density of the proton in the domain of low Bjorken x and low Q^2. Differential cross sections d\sigma/dt, where t is the squared four-momentum transfer at the proton vertex, are measured in the range |t|<1.2 GeV^2 as functions of \Wgp and Q^2. Effective Pomeron trajectories are determined for photoproduction and electroproduction. The J/Psi production and decay angular distributions are consistent with s-channel helicity conservation. The ratio of the cross sections for longitudinally and transversely polarised photons is measured as a function of Q^2 and is found to be described by perturbative QCD based models.
- Autoren
- H1 Collaboration
- Autoren-URL
- http://arxiv.org/abs/hep-ex/0510016v1
- Zeitschrift
- Eur.Phys.J.C
- Schlüsselwörter
- hep-ex
- hep-ex
- Notes
- 40 pages, 14 figures, 15 tables
- Paginierung
- 585 - 603
- Datum der Veröffentlichung
- 2005
- Herausgeber URL
- http://dx.doi.org/10.1140/epjc/s2006-02519-5
- Datum der Datenerfassung
- 2005
- Datum, an dem der Datensatz öffentlich gemacht wurde
- 2005
- Titel
- Elastic J/Psi Production at HERA
- Ausgabe der Zeitschrift
- 46
Files
0510016v1.pdf
Datenquelle: arXiv
- Autoren
- Collaboration H1
- DOI
- 10.1140/epjc/s2006-02519-5
- eISSN
- 1434-6052
- ISSN
- 1434-6044
- Ausgabe der Veröffentlichung
- 3
- Zeitschrift
- The European Physical Journal C
- Sprache
- en
- Online publication date
- 2006
- Paginierung
- 585 - 603
- Datum der Veröffentlichung
- 2006
- Status
- Published
- Herausgeber
- Springer Science and Business Media LLC
- Datum der Datenerfassung
- 2020
- Titel
- Elastic J/ψ production at HERA
- Ausgabe der Zeitschrift
- 46
Datenquelle: Manual
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