Exclusive Production of J/ψ Mesons in the ZEUS Detector
Exclusive Production of J/ψ Mesons in the ZEUS Detector
dc.contributor.advisor | Brock, Ian C. | |
dc.contributor.author | Tandler, Joachim | |
dc.date.accessioned | 2020-04-06T10:16:30Z | |
dc.date.available | 2020-04-06T10:16:30Z | |
dc.date.issued | 2003 | |
dc.identifier.uri | https://hdl.handle.net/20.500.11811/1912 | |
dc.description.abstract | Exclusive J/ψ production has been studied using the ZEUS detector at HERA. Two ranges of the photon virtuality, Q2 < 1 GeV2 and 0.15 < Q2 < 0.8 GeV2 are examined. The latter is defined by requiring the scattered electron to be detected in the Beam Pipe Calorimeter under low angles. The J/ψ mesons have been identified via the decay J/ψ -> e+ e-. The cross sections are measured as a function of the photon-proton centre-of-mass energy, W. The data used were taken during the 1999 and 2000 running periods, which yielded an integrated luminosity of 68.7 pb-1. The measured W dependences are in agreement with each other and the values obtained in high-Q2 (2 < Q2 < 100 GeV2) measurements. This leads to the conclusion that J/ψ production is a hard process for all Q2 values and can be described with models based on perturbative QCD. Electron-pion separation of the ZEUS Transition Radiation Detector is measured. A method to combine TRD information and dE/dx measurements from the central drift chamber is developed and applied to the Q2 < 1 GeV2 J/ψ sample. | en |
dc.language.iso | eng | |
dc.relation.ispartofseries | BONN-IR ; 2003-06 | |
dc.rights | In Copyright | |
dc.rights.uri | http://rightsstatements.org/vocab/InC/1.0/ | |
dc.subject | HERA | |
dc.subject | ZEUS | |
dc.subject | Diffraction | |
dc.subject | Charmonium | |
dc.subject | Transition | |
dc.subject | Radiation | |
dc.subject | Identification | |
dc.subject.ddc | 530 Physik | |
dc.title | Exclusive Production of J/ψ Mesons in the ZEUS Detector | |
dc.type | Dissertation oder Habilitation | |
dc.publisher.name | Universitäts- und Landesbibliothek Bonn | |
dc.publisher.location | Bonn | |
dc.rights.accessRights | openAccess | |
dc.identifier.urn | https://nbn-resolving.org/urn:nbn:de:hbz:5n-02108 | |
ulbbn.pubtype | Erstveröffentlichung | |
ulbbnediss.affiliation.name | Rheinische Friedrich-Wilhelms-Universität Bonn | |
ulbbnediss.affiliation.location | Bonn | |
ulbbnediss.thesis.level | Dissertation | |
ulbbnediss.dissID | 210 | |
ulbbnediss.date.accepted | 30.06.2003 | |
ulbbnediss.institute | Mathematisch-Naturwissenschaftliche Fakultät : Fachgruppe Physik/Astronomie / Physikalisches Institut (PI) | |
ulbbnediss.fakultaet | Mathematisch-Naturwissenschaftliche Fakultät | |
dc.contributor.coReferee | Schwille, Walter Jürgen |
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