Strongly interacting dynamics beyond the Standard Model and the Higgs boson

Contribution List

0. Registration

24/04/2013, 09:00

1. Discovering Walking Technicolor at LHC and on the Lattice

K Yamawaki

24/04/2013, 09:30

Walking technicolor having large anomalous dimension near unity and approximate scale symmetry predicts a light composite pseudo-Nambu-Goldstone boson of the approximate scale symmetry, Technidilaton, which can be identified with the 125 GeV boson discovered at LHC. I will describe how such a weakly coupled light composite scalar can be dynamically realized in the strongly coupled dynamics,...

2. Holographic techni-dilaton

D-K Hong

24/04/2013, 10:00

We construct a bottom-up model for the holographic dual of walking technicolor, which is based on dilaton-deformed AdS_5 geometry, taking into account the back-reaction of the probe brane. We then calculate the dilaton decay constant and its mass to show that the dilaton can be very light.

3. Implications of a 125 GeV Composite Higgs

A Pomarol

24/04/2013, 11:00

4. The 4D Composite Higgs Model at the LHC

S De Curtis

24/04/2013, 11:30

I will propose a four dimensional description of composite Higgs models which represents a complete framework for the physics of the Higgs as a pseudo-Nambu-Goldstone boson capturing all the relevant features of 5D models and more in general of composite Higgs models with partial compositeness. The minimal scenario includes a single multiplet of resonances of the composite sector, as these...

5. Anomalous dimension of the chiral condensate from the Dirac-operator spectrum

A Patella

24/04/2013, 14:00

A strategy for computing the anomalous dimension of the chiral condensate at the fixed point in infrared-conformal gauge theories from lattice simulations is discussed. The method is based on the scaling of the spectral density of the Dirac operator or rather its integral, the mode number. It is relatively cheap, mainly for two reasons: (a) the mode number can be determined with quite high...

6. Anomalous dimensions of four-fermion operators from conformal EWSB dynamics

C Pena

24/04/2013, 14:30

(Quasi)conformal scaling of composite operators from a strongly coupled EWSB dynamics helps to produce the characteristic hierarchies exhibited by the flavour couplings of the SM. It is however crucial to ensure that specific models do not violate bounds on BSM flavour dynamics; this in turn requires to control not only the anomalous dimensions of bilinears, but also those of...

7. Large N volume reduction of Minimal Walking Technicolor

L Keegan

24/04/2013, 15:00

I will discuss some numerical simulations of the large N limit of minimal walking technicolor, the SU(N=2) gauge theory with 2 adjoint fermions. Taking advantage of the conjectured volume independence at large N, the lattice simulations are performed on single site, with the end goal being a determination of the mass anomalous dimension of the theory.

8. Improved analysis for running coupling constant for SU(3) gauge theory with 12 flavours

D Lin

24/04/2013, 16:00

Whether or not the SU(3) gauge theory with 12 flavours is IR conformal remains a controversy. In this talk, we present improved analysis for running coupling constant for this theory in the Twisted Polyakov Loop scheme. Our updated analysis make use of lattice with size up to 24^4. This allows us to control the lattice artefacts in the analysis.

9. Orthogonal Technicolor with Isotriplet Dark Matter on the Lattice

A Hietanen

24/04/2013, 16:30

We study the gauge dynamics of Orthogonal Technicolor on the lattice. It is an SO(4)-gauge theory with two Dirac Wilson fermions transforming according to the vector representation of the gauge group. When used to break the electroweak symmetry dynamically the model leads to a natural dark matter candidate. We determine the lattice phase diagram by locating the strong coupling bulk phase...

11. Towards non-Supersymmetric Seiberg Duality

S ABEL

25/04/2013, 10:00

12. A Simple Holographic Model of the Conformal Window and the Techni-Dilaton

N EVANS

25/04/2013, 11:00

I present a simplified holographic model of chiral symmetry breaking in gauge theory. The chiral condensate is represented by a single scalar field in AdS, with the gauge dynamics input through radial dependence of its mass, representing the running of the anomalous dimension of the qbar q operator. Simple examples display the key elements of the chiral transition out of the conformal window -...

13. Stable D7 embeddings in walking backgrounds

L ANGUELOVA

25/04/2013, 11:30

Nonsupersymmetric probe branes play an important role in models of walking technicolor. However, the lack of supersymmetry makes it rather nontrivial to find stable configurations. In particular, the usual kind of embedding, used so far in this context, turns out to have an instability. We describe how to stabilize it by either introducing a certain worldvolume flux or allowing a more general...

15. Challenges in obtaining reliable lattice results near the conformal window

K Rummukainen

25/04/2013, 14:00

16. MWT: Chirally rotated Schrödinger functional scheme

C Pica

25/04/2013, 14:30

I will discuss preliminary results for our ongoing simulations of the evolution of the coupling constant for the Minimal Walking Technicolor (MWT) model. We use the recently proposed chirally rotated Schrödinger functional scheme, which is free from O(a) lattice artefacts.

17. The gradient flow running coupling scheme

D Nogradi

25/04/2013, 15:00

Luscher's recently introduced Yang-Mills gradient flow is adapted to a finite volume setting. A suitable renormalized coupling is then defined which only depends on the linear size of the finite 4-volume. Using step scaling the beta-function of non-abelian gauge theories can easily be measured on the lattice in this new scheme. The ideas are illustrated for SU(3) coupled to N_f = 4 flavors...

18. The sextet BSM model and the Higgs impostor

J Kuti

25/04/2013, 16:00

19. Conformality and the Higgs

E Pallante

25/04/2013, 16:30

20. Phenomenology of Technicolor with a light Techni-Higgs

M Frandsen

26/04/2013, 09:30

I will present the LHC phenomenology of Technicolor models in which the TC-Higgs accounts for the recently observed resonance at LHC. I will argue that the couplings of the TC-Higgs to SM fields are of the same order as a SM Higgs and discuss how the interplay between the TC-Higgs and other TC resonances can ultimately help discriminate it from such a SM Higgs.

21. Light Higgs from Technicolor via EW radiative corrections vs precision data

F Sannino

26/04/2013, 10:00

22. Higgs couplings and New Physics

G Cacciapaglia

26/04/2013, 11:00

I will discuss how signs of new physics may appear in the measurements of the Higgs couplings at the LHC, with a particular focus on the effects arising from a strongly interacting dynamics. I will present a parameterisation of the couplings motivated by New Physics, and briefly discuss the advantage compared to other approaches. The latest CMS/ATLAS results will also be included.

23. LHC data and aspects of new physics

K Tuominen

26/04/2013, 11:30

We consider the implications of current LHC data on new physics with strongly interacting sector(s). In particular we consider the effects of new vector mesons arising from strong dynamics. We discuss two example cases: first, the case where the effects of the vectors arise only through their mixing with the electroweak gauge fields and, second, the case where also a direct interaction terms...

14. Discussion

10. Holographic Walking

D MATEOS

24. Talk