Mathematisch-Naturwissenschaftliche Fakultät: Suche
Anzeige der Dokumente 1-10 von 11
Sensitivity of the ATLAS experiment in pp-collisions at a centre of mass energy of 14TeV at the LHC to a Higgs boson with large decay-width to invisible final states
(2012-01-20)
So far experimentally not ruled out, the stealthy Higgs scenario proposes a hidden scalar sector, to which only the Higgs has non-vanishing and possibly large couplings. Due to decays into the scalars the Higgs acquires a ...
Measurement of neutral current deep inelastic e+ p scattering cross sections with longitudinally polarized positrons with ZEUS at HERA
(2009-09-02)
Measurements of neutral current deep inelastic scattering of protons colliding with longitudinally polarized positrons, performed with data recorded in years 2006 and 2007 with the ZEUS detector, corresponding to an ...
Beauty Photoproduction using Decays into Muons at HERA
(2008)
Inclusive cross-sections for the production of open beauty in ep collisions at HERA are measured. The data were recorded with the ZEUS detector between 1996 and 2000. The measurements are restricted to photoproduction ...
Development of a Benchmark Parameter Scan for Higgs Bosons in the NMSSM Model and a Study of the Sensitivity for H->AA->4τ in Vector Boson Fusion with the ATLAS Detector
(2008)
An evaluation of the discovery potential for NMSSM Higgs bosons of the ATLAS experiment at the LHC is presented. For this purpose, seven two-dimensional benchmark planes in the six-dimensional parameter space of the ...
Production of Heavy Flavours with Associated Jets at HERA
(2007)
Inclusive cross-sections for the production of open beauty and charm in ep collisions at HERA recorded with the ZEUS detector in the years 1996-2000 are measured. The data is restricted to photoproduction processes, i.e. ...
Measurement of the Weak Mixing Angle and the Spin of the Gluon from Angular Distributions in the Reaction pp → Z/γ* + X → μ+μ- + X with ATLAS
(2013-11-15)
The measurement of the effective weak mixing angle with the ATLAS experiment at the LHC is presented. It is extracted from the forward--backward asymmetry in the polar angle distribution of the muons originating from $Z$ ...
Multivariate methods and the search for single top-quark production in association with a W boson in ATLAS
(2013-05-28)
This thesis describes three machine learning algorithms that can be used for physics analyses. The first is a density estimator that was derived from the Green’s function identity of the Laplace operator and is capable of ......
Search for Supersymmetry with Tau Leptons, Muons, Missing Transverse Momentum and Jets with the ATLAS Experiment at the Large Hadron Collider
(2013-09-16)
Beyond the established Standard Model (SM), the search for new physics is among the most important ventures of modern physics. Supersymmetry (SUSY) is a natural candidate for an extension of the SM to account for unexplained ...
Search for the H → b¯b decay mode of the Standard Model Higgs boson in associated production with a vector boson in proton-proton collisions at √s = 8 TeV with the ATLAS experiment
(2014-06-11)
In this thesis, a search for the H→b¯b decay mode of the Standard Model Higgs boson in associated production with a vector boson is presented. The search is based on the entire data-set recorded by the ATLAS experiment in ...
Discrete Symmetries and their Stringy Origin
(2014-10-15)
Discrete symmetries have proven to be very useful in controlling the phenomenology of theories beyond the standard model. In this work we explore how these symmetries emerge from string compactifications. Our approach is ......