NLO QCD corrections to the polarized photo- and hadroproduction of heavy quarks

Bojak, Ingo

NLO QCD corrections to the polarized photo- and hadroproduction of heavy quarks

dc.contributor.author	Bojak, Ingo	de
dc.date.accepted	2000-05-05	de
dc.date.accessioned	2004-12-06T11:33:12Z
dc.date.available	2004-12-06T11:33:12Z
dc.date.issued	2000-05-22	de
dc.description.abstract	This thesis presents the complete details of our calculation of the next-to-leading order (NLO) QCD corrections to heavy flavor photo- and hadroproduction with longitudinally (circularly) polarized photons and hadrons. The main motivation for investigating these processes is the determination of the polarized gluon density. Corresponding measurements will be available from the COMPASS and RHIC experiments, respectively, in the near future. All methods used in the computation are extensively documented and explained, providing a self-contained introduction to this type of NLO calculations. Some of the employed mathematical tools also may be of general interest, e.g., the series expansion of hypergeometric functions. The relevant parton level results are collected and plotted in the form of scaling functions. However, the simplification of the obtained gluon-gluon virtual contributions has not been completed yet. Thus NLO phenomenological predictions at the hadron level are only given in the case of photoproduction. The theoretical uncertainties of these predictions, in particular with respect to the size of the heavy quark mass, are carefully considered. Also it is shown that cuts on the transverse momentum of the produced heavy flavor can considerably enhance the measured production asymmetries. Finally unpolarized heavy quark production is briefly reviewed in order to derive conditions for a successful extraction of the polarized gluon density from future spin-dependent experimental data.	en
dc.identifier.uri	http://hdl.handle.net/2003/2397
dc.identifier.uri	http://dx.doi.org/10.17877/DE290R-13453
dc.language.iso	en	de
dc.publisher	Universität Dortmund	de
dc.subject	NLO	de
dc.subject	QCD	de
dc.subject	spin	en
dc.subject	Photoproduktion	de
dc.subject	photoproduction	en
dc.subject	Quantenchromodynamik	de
dc.subject	quantumchromodynamics	en
dc.subject	quantum chromodynamics	en
dc.subject	Schwere Quarks	de
dc.subject	heavy quarks	en
dc.subject	Hadroproduktion	de
dc.subject	Hadroproduction	en
dc.subject	Next-to-leading order	en
dc.subject.ddc	530	de
dc.title	NLO QCD corrections to the polarized photo- and hadroproduction of heavy quarks	en
dc.type	Text	de
dc.type.publicationtype	doctoralThesis	en
dcterms.accessRights	open access

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