Publication

Reconciling leptogenesis with observable μ → eγ rates

Related publications (51)

Graph Chatbot

Chat with Graph Search

Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.

DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.

Leptogenesis with an almost conserved lepton number

Steve Blanchet

Seesaw models with a slightly broken lepton number symmetry can explain small neutrino masses, and allow for low-scale leptogenesis. We make a thorough analysis of leptogenesis within the simplest model with two right-handed (RH) neutrinos (or with N_3 dec ...

2008

A New Era of Leptogenesis

Steve Blanchet

This thesis is devoted to some forefront issues in the field of leptogenesis. After reviewing the simplest picture where flavor effects are neglected and only the lightest right-handed neutrino contributes to the generation of asymmetry, we discuss in deta ...

Max-Planck-Institute for Physics, Munich / Technical University Munich2008

On the Role of Low-Energy CP Violation in Leptogenesis

Steve Blanchet

The link between low-energy CP violation and leptogenesis became more accessible with the understanding of flavor effects. However, a definite well-motivated model where such a link occurs was still lacking. Adjoint SU(5) is a simple grand unified theory w ...

2008

How to find neutral leptons of the nuMSM?

An extension of the Standard Model by three singlet fermions with masses smaller than the electroweak scale allows to explain simultaneously neutrino oscillations, dark matter and baryon asymmetry of the Universe. We discuss the properties of neutral lepto ...

2007

A possible symmetry of the nuMSM

To explain the dark matter and the baryon asymmetry of the Universe, the parameters of the ν MSM (an extension of the Minimal Standard Model by three singlet neutrinos with masses smaller than the electroweak scale) must be fine-tuned: one of the masses sh ...

2007

Non-perturbative processes with Fermion number non-conservation in different models of particle physics

Yannis Burnier

When a classical conservation law is broken by quantum corrections, the associated symmetry is said to be anomalous. This type of symmetry breaking can lead to interesting physics. For instance in strong interactions, the anomaly in the chiral current is i ...

EPFL2006

Leptogenesis beyond the limit of hierarchical heavy neutrino masses

Steve Blanchet

We calculate the baryon asymmetry of the Universe in thermal leptogenesis beyond the usual lightest right-handed (RH) neutrino dominated scenario (N_1DS) and in particular beyond the hierarchical limit (HL), M_1 < M_2 < M_3, for the RH neutrino mass spec ...

2006

Flavour effects on leptogenesis predictions

Steve Blanchet

Flavor effects in leptogenesis reduce the region of the see-saw parameter space where the final predictions do not depend on the initial conditions, the strong wash-out regime. In this case we show that the lowest bounds holding on the lightest right-hande ...

2006

Study of CP violating effects in time dependent B0(B̄ 0) → D(*)∓ π± decays

Stewart Cole, Tagir Aushev, Sun Hee Kim, Jing Li

The measurements of time-dependent decay rates for B 0(B̄0) → D(*)∓π ∓ decays and extraction of CP violation parameters containing φ3 were discussed. It was found that a 140 fb-1 data sample, which contained 152 × 106 BB̄ events, was used in the measuremen ...

2004

Disoriented sleptons

Riccardo Rattazzi

We discuss some fundamental concerns regarding the recent proposal of Dimopoulos, Giudice and Tetradis for dynamically aligning the soft masses of the sfermions in the minimal supersymmetric standard model (MSSM) with the corresponding fermion masses to su ...

1996