title: QCD Analysis of Neutral And Charged Current Cross Sections abd Search for Contact Interactions at HERA
creator: Pirumov, Hayk
subject: 530
subject: 530 Physics
description: A QCD analysis of the inclusive deep inelastic ep scattering cross section  measured by the H1 experiment at HERA is presented. The data correspond  to a total integrated luminosity of about 0.5 fb−1 and covers a kinematic  range of 0.5 GeV2 − 30000 GeV2 in the negative four-momentum transfer  Q2 and 3 · 10−5 − 0.65 in Bjorken x. The performed QCD analysis of the  double differential neutral and charged current cross sections results in a  set of parton distribution functions H1PDF 2012. The precise data from  HERA II period in the kinematic region of high Q2 considerably improve  the accuracy of the PDFs at the high x. In addition a search for signs of new  physics using single differential neutral current cross section measurements  at high Q2 is performed. The observed good agreement of the analysed data  with the Standard Model predictions allows to set constraints on various  new physics models within the framework of contact interactions. Limits  are derived on the compositeness scale for general contact interactions, on  the ratio of mass to the Yukawa coupling for heavy leptoquark models, on  the effective Plank-mass scale in the large extra dimension models and on  the quark radius.
date: 2013
type: Dissertation
type: info:eu-repo/semantics/doctoralThesis
type: NonPeerReviewed
format: application/pdf
identifier: https://archiv.ub.uni-heidelberg.de/volltextserverhttps://archiv.ub.uni-heidelberg.de/volltextserver/15347/1/Thesis_Pirumov.pdf
identifier: DOI:10.11588/heidok.00015347
identifier: urn:nbn:de:bsz:16-heidok-153472
identifier:   Pirumov, Hayk  (2013) QCD Analysis of Neutral And Charged Current Cross Sections abd Search for Contact Interactions at HERA.  [Dissertation]     
relation: https://archiv.ub.uni-heidelberg.de/volltextserver/15347/
rights: info:eu-repo/semantics/openAccess
rights: http://archiv.ub.uni-heidelberg.de/volltextserver/help/license_urhg.html
language: eng