eprintid: 15347
rev_number: 12
eprint_status: archive
userid: 740
dir: disk0/00/01/53/47
datestamp: 2013-08-07 05:39:42
lastmod: 2013-08-28 07:34:44
status_changed: 2013-08-07 05:39:42
type: doctoralThesis
metadata_visibility: show
creators_name: Pirumov, Hayk
title: QCD Analysis of Neutral And Charged Current Cross Sections abd Search for Contact Interactions at HERA
subjects: 530
divisions: 130200
adv_faculty: af-13
abstract: 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
id_scheme: DOI
id_number: 10.11588/heidok.00015347
ppn_swb: 1652978496
own_urn: urn:nbn:de:bsz:16-heidok-153472
date_accepted: 2013-04-17
advisor: HASH(0x55611e72af98)
language: eng
bibsort: PIRUMOVHAYQCDANALYSI2013
full_text_status: public
citation:   Pirumov, Hayk  (2013) QCD Analysis of Neutral And Charged Current Cross Sections abd Search for Contact Interactions at HERA.  [Dissertation]     
document_url: https://archiv.ub.uni-heidelberg.de/volltextserver/15347/1/Thesis_Pirumov.pdf