Juergen Kroseberg (Physikalisches Institut, Universitaet Bonn)
Prof. Abdel Djouadi
Mr Alexander Knochel (RWTH Aachen)
After the discovery of a Higgs boson and the absence of other new physics at LHC8, the minimal Standard Model once again seems to prevail. However, there are strong indirect experimental and theoretical arguments for the existence of physics beyond the SM. The crucial question is therefore whether the new physics scale will be within reach of the LHC14. The negative possibility was recently...
Mr Tobias Neumann (Bergische Universität Wuppertal)
One and two-jet observables of dimension-7 Higgs-gluon coupling operators are studied as probes of possible deviations from the top-loop induced gluon-Higgs coupling. We discuss the case of both a scalar as well as a pseudo-scalar Higgs boson and show that higher order operators can give visible deviations from Standard Model distribution shapes.
Tim Stefaniak (Physikalisches Institut, Universität Bonn)
We present the public computer tool HiggsSignals, which performs a statistical compatibility test of arbitrary Higgs sectors against Higgs boson signal rate and mass measurements at hadron colliders. We discuss how the program can be used to derive constraints on the Higgs sector of new physics models, using all currently available Higgs signal measurements from ATLAS, CMS, and the Tevatron...
Tom Zirke (Wuppertal University)
In this talk the associated production of a (scalar or pseudoscalar) Higgs boson with a weak gauge boson (W or Z) in the 2-Higgs-Doublet Model (2HDM) at the LHC is considered. For the WH mode, a simple rescaling of the Standard Model cross section provides a resonable approximation. In the case of ZH however, due to the larger diversity of partonic contributions, the dependence on the 2HDM...
Mr Andreas Crivellin (ITP Bern)
The decoupling limit of the MSSM is the 2HDM with generic flavour structure (of type III). After discussing the matching of the MSSM on 2HDM of type III including the resummation of all chirally enhanced effects and the newly calculated 2-loop corrections, I review the flavour phenomenology of the 2HDM of type III with focus on possible effects in tauonic B decays. This is interesting due the...
Christian Sander (University of Hamburg)
Prof. Michael Kraemer
Mr Nicki Bornhauser (Uni Bonn)
In most extensions of the Standard Model the relation mapping the experimentally measurable quantities onto the parameter values is unknown. In this talk the ability of artificial neural networks to find this unknown relation is demonstrated, by determining the unknown parameters of the CMSSM from quantities that can be measured at the LHC. However, the method should also work for many other...
Bjoern Sarrazin (University of Bonn)
The non-observation of SUSY at the LHC and the discovery of a Higgs-like particle at a mass of about 125 GeV together with results from low energy measurements and cosmology have put constrained supersymmetry under pressure. Performing global fits with the framework Fittino we find that the fit quality of the CMSSM is still in a well acceptable range, when Higgs mass and rate measurements at...
Roman Kogler (University of Hamburg)
With the discovery of a Higgs boson at the LHC and the precise measurement of its mass all fundamental Standard Model parameters are known and the global electroweak fit is overconstrained. This allows for the assessment of the validity of the Standard Model and to constrain scenarios for new physics. We present and discuss the influence of the known Higgs mass on the indirect determination of...
Dr Benno List (DESY)
The International Linear Collider (ILC) is planned as a linear e+e- collider with a centre-of-mass energy tunable between 200 and 500GeV, upgradeable to 1TeV, and a luminosity of 2E34 cm-2s-1. It is based on superconducting RF cavities operating at a mean gradient of 31.5MV/m. This year, the Technical Design Report of the ILC has been published, and activities are underway in the Japan in...
Dr Julien Baglio (Karlsruhe Institute of Technology)
In this talk a full NLO calculation of on-shell massive gauge boson pair production at the LHC will be presented, including both well known QCD corrections and new EW corections. Differential distributions as well as total cross sections predictions will be given, together with a detailed study of the theoretical uncertainties affecting the latter. A comparison with ATLAS and CMS experimental...
Naturalness arguments favor the stop squarks to be relatively light. Renormalization group running and left-right mixing reduce the mass of the lighter stop eigenstate. Even in the MSSM one stop can be very light, if the other one is sufficiently heavy. Light stops can reduce the LSP relic density through co-annihilation. The collider phenomenology of light stops can be quite different from...
Dr Ben O'Leary (Wuerzburg)
Coupling scalars to the electroweak-symmetry-breaking sector is a dangerous game, if those scalars are not meant to acquire non-zero VEVs themselves. A prime example of this is the minimal supersymmetric standard model (MSSM), where scalar partners of top quarks and tau leptons couple to the Higgs fields, and parameter points that lead to VEVs for these scalars must be excluded. We present...
Mr Daniel Schmeier (BCTP, University of Bonn)
The LHC is currently producing a wealth of new data and both ATLAS and CMS provide lots of analyses that theorists are eager to test their new models with. However, tuning detector simulations, understanding the analysis' details and interpreting the results can be a tedious (and boring) task. We therefore aim to simplify and automatise that procedure. We present a new program, CheckMATE,...
Stephanie Hansmann-Menzemer (Univeristy of Heidelberg)
Prof. Ulrich Nierste (Karlsruhe Institute of Technology)