eprintid: 1429
rev_number: 7
eprint_status: archive
userid: 1
dir: disk0/00/00/14/29
datestamp: 2001-02-07 13:55:00
lastmod: 2014-01-13 14:15:00
status_changed: 2012-08-14 15:00:45
type: doctoralThesis
metadata_visibility: show
creators_name: Volk, Erik
title: Measurement of the D*+- cross-section at HERMES
title_de: Messung des D*+/- Wirkungsquerschnittes im HERMES-Experiment
ispublished: pub
subjects: 530
divisions: 851340
adv_faculty: af-13
keywords: Charm, D-Star-Meson, Cross-section, HERMES Experiment
cterms_swd: Charm
cterms_swd: D-Stern-Meson
cterms_swd: Wirkungsquerschnitt
cterms_swd: HERMES <Teilchendetektor>
abstract_translated_text: In this thesis, the production of charm quarks in lepton-nucleon scattering has been investigated. Open charm events are identified through the detection of D^{*+/-} mesons which are produced in the fragmentation of charm quarks. The D^{*+/-} mesons are reconstructed in the decay chain D^{*+} o D^0 pi^+_s o ( K^- pi^+ ) pi^+_s with the Delta M method. The total cross-section for the electroproduction of D^{*+/-} mesons on a proton target has been measured in a fixed target experiment with a lepton beam energy of 27.5 GeV. The analysis is based on data collected by HERMES in 1997. From this result, the open charm photoproduction cross-section is determined for a photon energy of 15.5 GeV. The value for the cross-section is found to be in good agreement with the only other experimental result at similarly low photon energies and does agree with the expectation of perturbative QCD.  With the upgrade of the HERMES detector and the large amount of additional data taken in 1998-2000, a first determination of the polarised gluon distribution from open charm production thus seems to be feasible. 
abstract_translated_lang: eng
date: 2001
date_type: published
id_scheme: DOI
id_number: 10.11588/heidok.00001429
ppn_swb: 1643185098
own_urn: urn:nbn:de:bsz:16-heidok-14299
date_accepted: 2001-01-10
advisor: HASH(0x5561208dada8)
language: eng
bibsort: VOLKERIKMEASUREMEN2001
full_text_status: public
citation:   Volk, Erik  (2001) Measurement of the D*+- cross-section at HERMES.  [Dissertation]     
document_url: https://archiv.ub.uni-heidelberg.de/volltextserver/1429/1/diss.pdf