20-24 May 2013
Europe/Berlin timezone
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Parallel Session on Flavor Physics + Composite Models


Location: Bonn
Address: Physikalisches Institut Nussallee 12 53115 Bonn
Date: 22 May 14:00 - 5:40 PM


    • Nierste, Ulrich
    • Nierste, Ulrich

Timetable | Contribution List

Displaying 8 contributions out of 8
I present the 5D realization of a composite Higgs model with minimal tuning. The Higgs is a (pseudo-)Goldstone boson from the spontaneous breaking of a global SO(5) symmetry to an SO(4) subgroup. The peculiarity of our construction lies in the specific choice of the SO(5) representations of the 5D fermions which reduces the tuning to the minimal model-independent value allowed by electroweak preci ... More
Presented by Andrea THAMM on 22/5/2013 at 15:20
We discuss issues surrounding the definition of CP transformations in theories with discrete flavour symmetries. We will show that the consistency of the theory implies that every generalised CP transformation can be interpreted as a representation of an automorphism of the discrete group. Using this formalism, we will discuss various approaches that try to derive CP phases from geometrical proper ... More
Presented by Martin HOLTHAUSEN on 22/5/2013 at 14:20
We examine the compatibility of the composite Higgs models with the constraints coming from Electroweak Precision Tests from the low-energy effective theory (EFT) prospective. The EFT approach allows us to capture the common features of the composite Higgs models and incorporate a broad class of explicit models. In our analysis we concentrate on the effects related to a presence of relatively ligh ... More
Presented by Oleksii MATSEDONSKYI on 22/5/2013 at 14:40
The observed hierarchies of fermion masses and mixing angles can be explained in the framework of Froggatt and Nielsen by imposing a family dependent U(1) symmetry. Based on a supersymmetric setting, we consider the possibility of a flavor U(1) R-symmetry which breaks down to a remnant Z4 R-symmetry. While containing R-parity as a subgroup, this discrete R-symmetry provides a solution to the mu-pr ... More
Presented by Christoph LUHN on 22/5/2013 at 12:00
We construct a general class of pseudo-Goldstone composite Higgs models, within the minimal SO(5)/SO(4) coset structure. We characterize the main properties these models should have in order to give rise to a Higgs mass around 125 GeV. We assume the existence of relatively light and weakly coupled spin 1 and 1/2 resonances. In absence of a symmetry principle, we introduce the Minimal Higgs Potenti ... More
Presented by David MARZOCCA on 22/5/2013 at 15:00
I am going to present a SUSY flavor model based on a global SU(2) and a gauged U(1) horizontal symmetry. In the fermion sector it closely resembles the successful predictions of the U(2) models for various relations between fermion masses and mixing angles. In the sfermion sector the U(1) acquires a large D-term vev which together with the usual F-term contribution leads to split spectrum in which ... More
Presented by Robert ZIEGLER on 22/5/2013 at 12:30
If the d=5 Weinberg operator is forbidden by a discrete symmetry, neutrino mass can be generated by new physics at the TeV scale, which can be tested at the LHC. We want to discuss models where neutrino mass originates from a d=7 operator in the framework of SUSY-GUTs containing an SU(5) subgroup. The embedding in GUT multiplets has phenomenological consequences, which we want to discuss on the ba ... More
Presented by Martin KRAUSS on 22/5/2013 at 14:00
We revisit a two right-handed neutrino model with two texture zeros, namely an indirect model based on A4 with the recently proposed new type of constrained sequential dominance (CSD2), involving vacuum alignments along the (0,1,-1)^T and (1,0,2)^T directions in flavour space, which are proportional to the neutrino Dirac mass matrix columns. In this paper we construct a renormalizable and unified ... More
Presented by Martin SPINRATH on 22/5/2013 at 13:00
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