[en] In the MSSM (Minimal Supersymmetric extension of the Standard Model) scalar h, H production is mediated by heavy quark and squark loops. The higher order QCD corrections have been obtained some time ago and turned out to be large. The full SUSY-QCD corrections have been obtained recently including the full mass dependence of the loop particles. We describe our calculation and present first numerical results. We also address the question of the proper treatment of the large gluino mass limit, i.e. the consistent decoupling of heavy gluino effects, and present the effective Lagrangian for decoupled gluinos. (authors)

[en] In composite Higgs models the Higgs boson emerges as a pseudo-Goldstone boson from a strongly-interacting sector. While in the Standard Model the Higgs sector is uniquely determined by the mass of the Higgs boson, in composite Higgs models additional parameters control the Higgs properties. In consequence the LEP and Tevatron exclusion bounds are modified and the Higgs boson searches at the LHC are significantly affected. The consequences for the LHC Higgs boson search in the composite model will be discussed. (authors)

[en] The Flavour Les Houches Accord (FLHA) specifies a standard set of conventions for flavour-related parameters and observables such as Wilson coefficients, form factors, decay tables, etc, using the generic SUSY Les Houches Accord (SLHA) file structure. The accord provides a model-independent interface between codes evaluating and/or using flavour related observables. We present here a few clarifications and improvements to the accord. In addition, we provide instructions for a new block concerning the electric and magnetic dipole moments. (authors)

[en] To establish the Higgs mechanism sui generis experimentally, the Higgs self-interaction potential must be reconstructed. This task requires the measurement of the trilinear and quadrilinear self-couplings, as predicted in the standard model or in supersymmetric theories. The couplings can be probed in multiple Higgs production at high-luminosity e⁺e^- linear colliders. We present the theoretical analysis for the production of neutral Higgs-boson pairs in the relevant channels of double Higgs-strahlung and associated multiple Higgs production. (orig.)

[en] To aid phenomenological studies of Beyond-the-Standard-Model (BSM) physics scenarios, a web repository for BSM calculational tools has been created. We here present brief overviews of the relevant codes, ordered by topic as well as by alphabet

[en] An accord specifying a unique set of conventions for supersymmetric extensions of the Standard Model together with generic file structures for (1) supersymmetric model specifications and input parameters, (2) electroweak scale supersymmetric mass and coupling spectra, and (3) decay tables is presented, to provide a universal interface between spectrum calculation programs, decay packages, and high energy physics event generators. (author)

[en] We build a model containing two scalar doublets and a scalar singlet with a specific discrete symmetry. After spontaneous symmetry breaking, the model has Standard Model-like phenomenology, as well as a hidden scalar sector which provides a viable dark matter candidate. We show that CP violation in the scalar sector occurs exclusively in the hidden sector, and consider possible experimental signatures of this CP violation. In particular, we study contribution to anomalous gauge couplings from the hidden scalars.

[en] This Report summarises the results of the second year's activities of the LHC Higgs Cross Section Working Group. The main goal of the working group was to present the state of the art of Higgs Physics at the LHC, integrating all new results that have appeared in the last few years. The first working group report Handbook of LHC Higgs Cross Sections: 1. Inclusive Observables (CERN-2011-002) focuses on predictions (central values and errors) for total Higgs production cross sections and Higgs branching ratios in the Standard Model and its minimal supersymmetric extension, covering also related issues such as Monte Carlo generators, parton distribution functions, and pseudo-observables. This second Report represents the next natural step towards realistic predictions upon providing results on cross sections with benchmark cuts, differential distributions, details of specific decay channels, and further recent developments