Baryogenesis

À propos
Confidentialité
Mentions légales

Graph Chatbot

Publications associées (32)

Weak scale baryogenesis in a supersymmetric scenario with R-parity violation

We investigate the connection between R-parity violation (RPV) in supersymmetric models and Baryogenesis. First we discuss in detail the assumptions of a theorem by Nanopoulos and Weinberg on the CP asymmetry generated from the decay of massive particles. ...

Springer Nature2014

Inflation, leptogenesis, and Yukawa quasiunification within a supersymmetric left-right model

Roberta Armillis

A simple extension of the minimal left-right symmetric supersymmetric grand unified theory model is constructed by adding two pairs of superfields. This naturally violates the partial Yukawa unification predicted by the minimal model. After including super ...

American Physical Society2014

Leptogenesis from first principles in the resonant regime

The lepton asymmetry generated by the out-of-equilibrium decays of heavy Majorana neutrinos with a quasi-degenerate mass spectrum is resonantly enhanced. In this work, we study this scenario within a first-principle approach. The quantum field theoretical ...

Academic Press Inc Elsevier Science2013

Can active-sterile neutrino oscillations lead to chaotic behavior of the cosmological lepton asymmetry?

While the cosmic baryon asymmetry has been measured at high accuracy to be 6.1 x 10(-10), a corresponding lepton asymmetry could be as large as 10(-2) if it hides in the neutrino sector. It has been known for some time that such an asymmetry could be gener ...

Iop Publishing Ltd2013

On Partial Compositeness and the CP asymmetry in charm decays

Riccardo Rattazzi, Duccio Pappadopulo, Paolo Lodone, Boaz Keren Zur, Luca Vecchi

Recently, the LHCb and CDF Collaborations reported the measure of an unexpectedly large direct CP asymmetry in D meson decays. In this paper we ask if new physics associated with Partial Compositeness could plausibly explain this result. We find that Compo ...

Elsevier Science Bv2013

Sterile Neutrinos as the Origin of Dark and Baryonic Matter

Mikhail Chapochnikov, Laurent Canetti, Marco Drewes

We demonstrate for the first time that three sterile neutrinos alone can simultaneously explain neutrino oscillations, the observed dark matter, and the baryon asymmetry of the Universe without new physics above the Fermi scale. The key new point of our an ...

Amer Physical Soc2013

Dark matter, baryogenesis and neutrino oscillations from right-handed neutrinos

Mikhail Chapochnikov, Laurent Canetti, Tibor Frossard, Marco Drewes

We show that, leaving aside accelerated cosmic expansion, all experimental data in high energy physics that are commonly agreed to require physics beyond the Standard Model can be explained when completing the model by three right-handed neutrinos that can ...

American Physical Society2013

Cosmological lepton asymmetry with a nonzero mixing angle theta(13)

Julien Lesgourgues

While the baryon asymmetry of the Universe is nowadays well measured by cosmological observations, the bounds on the lepton asymmetry in the form of neutrinos are still significantly weaker. We place limits on the relic neutrino asymmetries using some of t ...

American Physical Society2012

Matter and antimatter in the universe

Mikhail Chapochnikov, Laurent Canetti, Marco Drewes

We review observational evidence for a matter-antimatter asymmetry in the early universe, which leads to the remnant matter density we observe today. We also discuss bounds on the presence of antimatter in the present-day universe, including the possibilit ...

Iop Publishing Ltd2012

Asymptotic safety of gravity and the Higgs-boson mass

Mikhail Chapochnikov

If gravity is asymptotically safe, then the ultimate theory might be just the standard model (minimally supplemented by a few light particles to accommodate neutrino masses and oscillations, dark matter, and the baryon asymmetry of the Universe) plus gravi ...

SP MAIK Nauka/Interperiodica, Springer2012

Search for GeV-Scale Sterile Neutrinos Responsible for Active Neutrino Oscillations and Baryon Asymmetry of the Universe

Mikhail Chapochnikov

Standard Model fails to explain neutrino oscillations, dark matter, and baryon asymmetry of the Universe. All these problems can be solved with three sterile neutrinos added to SM. Quite remarkably, if sterile neutrino masses are well below the electroweak ...

Hindawi Publishing Corporation2012

Magnetic fields at first order phase transition: a threat to electroweak baryogenesis

Andrea De Simone

The generation of the observed baryon asymmetry may have taken place during the electroweak phase transition, thus involving physics testable at LHC, a scenario dubbed electroweak baryogenesis. In this paper we point out that the magnetic field which is pr ...

2011

Page 2 sur 2