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Transverse Momentum Distribution for Drell Yan Process

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dc.contributor.advisor Meade, Patrick en_US
dc.contributor.author Wang, Yikun en_US
dc.contributor.other Department of Physics. en_US
dc.date.accessioned 2017-09-20T16:51:05Z
dc.date.available 2017-09-20T16:51:05Z
dc.date.issued 2015-12-01
dc.identifier.uri http://hdl.handle.net/11401/76739 en_US
dc.description 49 pg. en_US
dc.description.abstract The Drell-Yan process is the production of massive lepton pairs in hadronic collisions. In this thesis, we investigate the transverse momentum distribution of the intermediate vector bosons for the Drell-Yan process. This distribution can be predicted by perturbative QCD. However, one difficulty of the calculation is large logarithms that occur in the calculation of the differential cross section which come from the soft and collinear structure of the phase space. The large logarithmic terms in the differential cross section spoil the validity of perturbative expansion in the region of small transverse momentum. Transverse momentum resummation can give convergent results and reliable perturbative predictions by summing over the logarithmic contributions. In this thesis we review and calculate the resummed transverse momentum distribution for the Drell-Yan process up to leading and next leading logarithmic level. Another approach to predicting the transverse momentum distribution is the parton shower algorithm in Monte Carlo event generators. Parton shower algorithms can simulate the soft and collinear emissions from incoming and outgoing partons of the process. The logarithmic accuracy of the parton shower algorithm is analyzed in this thesis. The numerical comparison between the parton shower prediction and the resummation logarithmic accuracy is made accordingly. en_US
dc.description.sponsorship This work is sponsored by the Stony Brook University Graduate School in compliance with the requirements for completion of degree. en_US
dc.format Monograph en_US
dc.format.medium Electronic Resource en_US
dc.language.iso en_US en_US
dc.publisher The Graduate School, Stony Brook University: Stony Brook, NY. en_US
dc.subject.lcsh Physics en_US
dc.title Transverse Momentum Distribution for Drell Yan Process en_US
dc.type Thesis en_US
dc.mimetype Application/PDF en_US
dc.contributor.committeemember Sterman, George en_US
dc.contributor.committeemember Hobbs, John en_US
dc.contributor.committeemember Meade, Patrick. en_US

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