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dc.contributor.advisorSurrow, Bernd
dc.creatorOlvitt, Daniel L.
dc.date.accessioned2020-11-04T17:00:54Z
dc.date.available2020-11-04T17:00:54Z
dc.date.issued2017
dc.identifier.urihttp://hdl.handle.net/20.500.12613/3361
dc.description.abstractUnderstanding what contributes to the intrinsic angular momentum (spin) of the proton has been a major goal of the nuclear physics community. In the 1980s, it was discovered that quarks contribute 30% to the spin of the proton. This information led to a search to find other contributions to the spin of the proton. At STAR, the double spin asymmetry (ALL) is measured as it is sensitive to the polarized gluon distribution (Dg(x)). The STAR 2009 inclusive jet ALL at sqrt(s) = 200 GeV has been incorporated into two independent global fits. These fits show for the first time a statistically significant non-zero gluon contribution to the spin of the proton in the parton momentum fraction range x > 0.05. Dijet ALL is also measured at STAR. Dijets are advantageous since the parton momentum fraction (x) of the initial partons may be reconstructed to first order from final state measurements. In 2013 STAR collected an estimated 250 pb-1 of data at sqrt(s) = 510 GeV. The higher center of mass energy will allow STAR to probe Dg(x) at x values as low as 0.02. The large statistics will allow a reduction in the uncertainties. Once the data is incorporated into future global fits, it will allow for a more precise determination of Dg(x). The 2013 dijet ALL results will be presented. The results show good agreement with both global fits and previous STAR results dijet measurements.
dc.format.extent147 pages
dc.language.isoeng
dc.publisherTemple University. Libraries
dc.relation.ispartofTheses and Dissertations
dc.rightsIN COPYRIGHT- This Rights Statement can be used for an Item that is in copyright. Using this statement implies that the organization making this Item available has determined that the Item is in copyright and either is the rights-holder, has obtained permission from the rights-holder(s) to make their Work(s) available, or makes the Item available under an exception or limitation to copyright (including Fair Use) that entitles it to make the Item available.
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subjectNuclear Physics and Radiation
dc.subjectParticle Physics
dc.subjectGluon
dc.subjectProton
dc.subjectRhic
dc.subjectSpin
dc.subjectStar
dc.titleMeasurement of the Longitudinal Double Spin Asymmetry for Dijet Production in Polarized Proton+Proton Collisions at sqrt(s) = 510 GeV at STAR
dc.typeText
dc.type.genreThesis/Dissertation
dc.contributor.committeememberMetz, Andreas
dc.contributor.committeememberSparveris, Nikolaos
dc.contributor.committeememberReed, Rosi
dc.description.departmentPhysics
dc.relation.doihttp://dx.doi.org/10.34944/dspace/3343
dc.ada.noteFor Americans with Disabilities Act (ADA) accommodation, including help with reading this content, please contact scholarshare@temple.edu
dc.description.degreePh.D.
refterms.dateFOA2020-11-04T17:00:54Z


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