Portoroz 2015: Particle Phenomenology From the Early Universe to High Energy Colliders

Session

BSM

7 Apr 2015, 16:30

James Cook (Portoroz, Slovenia)

22. From asymptotic freedom to asymptotic safety in particle physics

Daniel Litim

07/04/2015, 16:30

Planary Talk

We study the high-energy behaviour of interacting non-Abelian gauge fields, fermions, and scalars. In a regime where asymptotic freedom is absent, we find that the three types of fields cooperate to develop an interacting UV fixed point, strictly controlled by perturbation theory. The key features of asymptotic safety for UV model building and particle phenomenology are discussed.

2. A flavoured invisible axion

Alejandro Celis (IFIC CSIC-Universitat de Valencia)

07/04/2015, 16:53

Planary Talk

The Peccei-Quinn mechanism is perhaps the most compelling solution we have for the strong-CP problem. The mechanism predicts the existence of a pseudo-Goldstone boson, the axion, which could account for the dark matter content of the Universe. The smallness of active neutrino masses can also be explained in axion models via a type-I see-saw mechanism, providing a dynamical origin for the...

14. Extending 2HDM by a singlet scalar field - the Case for Dark Matter

Bohdan Grzadkowski (University of Warsaw)

07/04/2015, 17:16

Planary Talk

We extend the two-Higgs doublet models of Type I and Type II by adding a real gauge-singlet scalar S which is the Dark Matter (DM) candidate (2HDMS models). We impose theoretical constraints derived from perturbativity, stability, unitarity and correct electroweak symmetry breaking and require that one of CP-even Higgs bosons fit the LHC data for the ∼125.5 GeV state at the 68%~C.L. after...

21. Accidental matter at the LHC

Ramona Groeber (INFN)

07/04/2015, 17:39

Planary Talk

In this talk I will discuss weak-scale extensions of the Standard Model which automatically preserve the accidental and approximate symmetry structure of the Standard Model and which are hence invisible to indirect low-energy probes. By requiring the consistency of the effective field theory up to scales of $\Lambda_{eff}=10^{15}$ GeV and after applying cosmological constraints, there is...

45. Flavored U(1)s

Christopher Smith (L)

10/04/2015, 11:00

Planary Talk

Several aspects of the MFV implementation in the presence of global U(1) flavor symmetries will be discussed. Some generic implications for baryon number violation, lepton number violation and Majorana mass terms, and axion dynamics will be drawn.

28. Electric dipole moments generated from flavor changing scalars

Jan O. Eeg (University of Oslo)

10/04/2015, 11:23

Planary Talk

I comment shortly on various mechanisms for electric dipole moments. I also comment on recent calculations of two loop diagrams for electric dipole moments generated by flavor changing scalars.

25. Flavour correlations in RSc model

Pietro Colangelo (Unknown)

10/04/2015, 11:46

Planary Talk

Rare b decays are investigated in the Randall Sundrum model with custodial symmetry. Correlations among the observables are studied, and predictions for unobserved modes are presented.

6. Waiting for New Physics

Andrzej Buras (Munich)

10/04/2015, 12:09

Planary Talk

I will report on recent analyses of rare K and B decays done at TUM-IAS which with improved data should provide in this decade some insight into the dynamics at the LHC scales and beyond them.