Conveners
Flavor: and Neutrinos
- Andre De Gouvea (Northwestern University)
Flavor: and Neutrinos
- Andre De Gouvea (Northwestern University)
Flavor: and SuSy
- cecilia tarantino (University Roma Tre)
Flavor
- cecilia tarantino (University Roma Tre)
Daniel Wegman
(IST, Lisboa)
27/05/2014, 14:30
Flavor Physics and Neutrinos
Parallel Session talk
TBA
Aurora Meroni
(U)
27/05/2014, 14:50
Flavor Physics and Neutrinos
Parallel Session talk
Determining the nature - Dirac or Majorana - of massive neutrinos, possibly related to a New Physics scale beyond that predicted by the Standard Model is a fundamental problem under study. Significant experimental efforts have been made to unveil the possible Majorana nature of massive neutrinos by searching for neutrinoless double beta decay with increasing sensitivity. These constraints,...
Valentina De Romeri
(C)
27/05/2014, 15:10
Flavor Physics and Neutrinos
Parallel Session talk
We investigate the contribution of sterile states to the anomalous magnetic and electric dipole moments of charged leptons. Furthermore, as a specific example, we study this effect in a low-scale seesaw model. We perform a complete numerical study scanning the relevant parameter space of the models.
Wei-Chih Huang
(University College London)
27/05/2014, 15:30
Flavor Physics and Neutrinos
Parallel Session talk
In the context of the type-I seesaw mechanism, when there is an underlying discrete flavor symmetry, such as $\mu-\tau$ symmetry at work, $\theta_{13}$ in the active neutrino mixing matrix is zero and leptogenesis can not work since there are no complex phases in the heavy-light neutrino mixing. In this work, we demonstrate that the existence of dark matter, which violates the flavor symmetry,...
Andreas Trautner
(TU Muenchen)
27/05/2014, 15:50
Flavor Physics and Neutrinos
Parallel Session talk
This talk aims to give a comprehensive introduction to the topic of CP in theories with discrete (flavor) symmeries. I will argue that consistent physical CP transformations are precisely those transformations, which map group representations to their complex conjugate.
In this context, generalizing CP symmetries is not some additional feature but a mere necessity. I will present mathematical...
Yi Cai
27/05/2014, 16:40
Flavor Physics and Neutrinos
Parallel Session talk
To unravel the mystery of neutrino masses and mixing angles, we adopt a bottom-up approach based on effective operators which violates the lepton number by 2 units. By opening the effective operators, we can find the corresponding minimal UV completion.
An example based on dimension-9 operator is presented and its flavor physics is studied in detail. We also discuss the collider phenomenology...
Juri Smirnov
(M)
27/05/2014, 17:00
Flavor Physics and Neutrinos
Parallel Session talk
In order to explain the large scale separation between the scale of electro weak symmetry breaking (EWSB) and the Planck
scale we argue for a class of models where the EWSB scale is generated purely radiatively. This means we deal with single scale theories where
the spontaneous symmetry breaking scale is set entirely by the particle content. We argue that purely from hard facts of...
Lorenzo Basso
(Institut Pluridisciplinaire Hubert Curien (FR))
27/05/2014, 17:20
Flavor Physics and Neutrinos
Parallel Session talk
In the light of the recent LHC data, we study precision tests sensitive to the violation of lepton universality, in particular the violation of unitarity in neutrino mixing. Keeping all data we find no satisfactory fit, even allowing for violations of unitarity in neutrino mixing. Leaving out $sin^2 \theta_{eff}$, from the hadronic forward-backward asymmetry at LEP, we find a good fit to the...
Lorenzo Calibbi
(University of Brussels, ULB)
27/05/2014, 17:40
SuSy and other BSM phenomenology
Parallel Session talk
We study charged Lepton Flavour Violation post the 8 TeV LHC run within supersymmetric scenarios. Focusing on the simplified models employed by the LHC collaborations for interpreting the searches for electro-weak production of sleptons and gauginos, we emphasize the complementarity of collider and low-energy data to unveil or constrain new physics effects. In particular, we show that large...
Dr
Robert Ziegler
(LPTHE and ILP)
29/05/2014, 14:30
SuSy and other BSM phenomenology
Parallel Session talk
I will discuss lepton flavor violation in modifications of Gauge Mediation with new direct couplings between messenger and matter fields that are controlled by an underlying flavor symmetry. Even In the context of simple U(1) flavor models these models lead to LFV effects that are as strongly suppressed as in SUSY Partial Compositiness. Moreover there is an additional suppression of...
Constantin Sluka
(University of Basel)
29/05/2014, 14:50
SuSy and other BSM phenomenology
Parallel Session talk
We discuss how the double missing partner mechanism solution to the doublet-triplet splitting problem in four-dimensional supersymmetric SU(5) GUTs can be combined with GUT flavour models which predict the quark and lepton mass ratios. It is argued that towards this goal a second GUT breaking Higgs field in the adjoint representation is required. We discuss all possible renormalisable...
Timon Mede
(IPhT, CEA-Saclay, France)
29/05/2014, 15:10
SuSy and other BSM phenomenology
Parallel Session talk
We are investigating whether contrary to the popular belief there still exists some portion of parameter space where the minimal renormalizable supersymmetric SU(5) GUT model could be reconciled with all the phenomenological constraints while remaining perturbative all the way.
The largest obstacle poses the accommodation of the measured mass of the b quark in connection with the vacuum...
Sudhir Kumar Vempati
(Centre for High Energy Physics, Indian Institute of Science)
29/05/2014, 15:30
SuSy and other BSM phenomenology
Parallel Session talk
Minimal Gauge Mediation has been under severe stress since
the discovery of the Higgs Boson at 125 GeV. In the present
talk, we propose solution which do not introduce messenger-
matter mixing. We show that an extra U(1) factor in addition
to the Standard Model gauge group can significantly alter
the situation. A U(1) charged, Standard Model singlet...
Prof.
Bumseok Kyae
(Pusan National University (Korea))
29/05/2014, 15:50
Higgs Physics
Parallel Session talk
A small Higgs mass parameter m_{h_u}^2
can be insensitive to various trial heavy stop masses,
if a universal soft squared mass is assumed for the chiral superpartners and the Higgs boson at the grand unification (GUT) scale, and a focus point (FP) of m_{h_u}^2
appears around the stop mass scale.
The challenges in the FP scenario are (1) a too heavy stop mass (~ 5 TeV) needed for the...
Juergen Rohrwild
(University of Oxford)
29/05/2014, 16:40
SuSy and other BSM phenomenology
Parallel Session talk
The Randall-Sundrum model addresses the gauge and flavour
hierarchy in a unified (extra-dimensional) framework. The model is, by itself, non-renormalizable.
This makes predictions for loop-mediated observables a delicate issue.
I will present a general strategy for computing penguin loops in the
five-dimensional theory via a matching procedure onto a 4D Lagrangian
with...
Dr
Sang Hui Im
(Seoul National University)
29/05/2014, 17:00
SuSy and other BSM phenomenology
Parallel Session talk
To explain the muon g-2 anomaly in supersymmetric standard models demands the typical sparticle mass scale around O(100) GeV, while the recent null result of the electron EDM measurement by the ACME collaboration suggests the mass scale to be around O(10) TeV. In this talk, after reviewing standard resolutions of this apparent confliction, we propose a new parameter region in supersymmetry...
Dr
Lorenzo Diaz-Cruz
(FCFM-BUAP)
29/05/2014, 17:20
Higgs Physics
Parallel Session talk
In this talk we discuss the decays of the top quark, focusing on the flavor-changing neutral currents (FCNC) modes, as well as the modes with multilepton final states. The FCNC modes are very suppressed within the Standard Model (SM) of electroweak interactions, but could be enhanced in extension of the SM, such as the two-Higgs doblet model and Supersymmetry. The decay modes with...
Ana Solaguren-Beascoa
(Techinsche Universität München)
29/05/2014, 17:40
Higgs Physics
Parallel Session talk
I will present a framework to generate the quark mass hierarchies and mixing angles by extending the Standard Model with one extra Higgs doublet. The charm and strange quark masses are generated by small quantum effects, thus explaining the hierarchy between the second and third generation quark masses. All the mixing angles are also generated by small quantum effects: the Cabibbo angle is...
