FLASY 2018: 7th Workshop on Flavour Symmetries and Consequences in Accelerators and Cosmology

Session

Morning Session I

2 Jul 2018, 09:05

Lecture Hall 1, Foyer, Department of Physics (University of Basel)

56. FLASY 2018 Opening talk

Gino Isidori (Universitaet Zuerich (CH))

02/07/2018, 09:15

TBA

37. Reconstructing Flavoured Leptoquark Models for B Decay Anomalies

Jim Talbert (DESY)

02/07/2018, 10:00

We perform a scan of non-Abelian discrete symmetries capable of quantizing Yukawa-type couplings appearing in leptoquark extensions of the Standard Model (SM). Leptoquark models with particular flavour structures, i.e. Yukawa textures, yield lepton non-universal signatures in B hadron decay observables, in particular the ratios R_{D^(\star),K^(star)} currently deviating from SM predictions. ...

15. Theories of Flavour from the Planck Scale to the Electroweak Scale

Prof. Stephen F King (University of Southampton)

03/07/2018, 09:00

In this talk we discuss various Theories of Flavour from the Planck scale to the Electroweak Scale, ranging from SUSY GUTs with Flavour Symmetry (with or without extra dimensions) to Flavourful Z' Models at the Electroweak scale capable of accounting for R_K(*).

36. A "Vector-like chiral" fourth generation to explain muon anomalies

Dr Andreas Trautner (BCTP, Bonn University)

03/07/2018, 09:30

I will discuss an extension of the Standard Model (SM) by a full new generation of quarks and leptons which are vector-like (VL) under the SM gauge group but chiral with respect to a new flavor dependent U(1) gauge symmetry. The model can simultaneously explain the deviations of the muon g-2 and lepton flavor universality in B-meson decays without conflicting with the data on Higgs decays,...

5. Light Mediators in B Anomalies

Prof. Alakabha Datta (University of Mississippi)

03/07/2018, 10:00

We will consider solving the neutral current B anomalies called the R_K and R_K^* puzzles with light mediators. We will lay out the conditions required to solve the anomalies and be consistent will all constraints. We will then consider a scenario where the required interaction can arise and consider the implications in other sectors like coherent neutrino scattering.

34. Heavy neutrinos and their Dirac/Majorana nature

Claudio Dib (Federico Santa Maria Technical University (CL))

04/07/2018, 09:00

We present the study of processes in current experiments to search for heavy sterile neutrinos, particles which appear as natural extensions of the Standard Model spectrum, whose presence will explain the tiny masses of the known neutrinos. While the simplest explanation of these tiny masses is by a seesaw mechanism where extra neutral leptons have masses way up to GUT scales, there are many...

24. Low-Scale Seesaw and the CP Violation in Neutrino Oscillations

Joao Penedo (SISSA)

04/07/2018, 09:30

We consider a version of the low-scale type I seesaw mechanism for generating small neutrino masses, as an alternative to the standard seesaw scenario. It involves two right-handed (RH) neutrinos $\nu_{1R}$ and $\nu_{2R}$ having a Majorana mass term with mass $M$, which conserves the lepton charge $L$. The RH neutrino $\nu_{2R}$ has lepton-charge conserving Yukawa couplings $g_{\ell 2}$ to the...

52. Neutrinoless Double Beta Decay and BSM Physics

Dr Frank Deppisch (University College London)

04/07/2018, 10:00

Neutrinoless double beta (0vbb) decay is the most powerful tool to probe not only for Majorana neutrino masses but for lepton number violating physics in general. I will discuss the connections between lepton number violation, double beta decay and neutrino mass, highlighting recent experimental and theoretical efforts. Extending the standard picture of light neutrino exchange, I will review a...

22. Are neutrino masses modular forms?

Prof. Ferruccio Feruglio (University of Padova)

05/07/2018, 09:00

The hope of relating fermion masses and mixing angles to
some fundamental underlying principle, has fostered an intense activity
aimed at identifying possible symmetry patterns in the data.
Neutrino masses and lepton mixing angles have played an important
role in such attempts. In this talk I will illustrate a new class of models where
the role of flavour symmetry is played by the modular...

30. The mass ratios parametrization

Ulises Saldana-Salazar (Karlsruhe Institute of Technology)

05/07/2018, 09:30

In this talk, we fully discuss the old idea of parametrizing fermion mixing through the corresponding fermion masses. We begin by showing how 't Hooft's criteria for naturalness could be employed to build a new mixing parametrization with the right behaviour to allow the emergence of new symmetries, whenever considering either the first or the first two lightest families equal to zero....

43. What physics does the charged lepton mass relation tell us?

Yoshio Koide (Osaka University, Japan)

05/07/2018, 10:00

It is well known that a mass relation for the charged leptons,
$(m_e +m_\mu + m_\tau)/(\sqrt{m_e} +\sqrt{m_\mu} +\sqrt{m_\tau})^2 =2/3$, is excellently satisfied by the observed masses (pole mass).
However, this excellent coincidence is just a big problem, because
``mass" in a field theoretical model means a running mass, not
pole mass. For this problem, Sumino has proposed a way out by...