Weyl and Majorana Neutrinos

2015 ◽  
pp. 215-226
Keyword(s):  
Majorana Neutrinos

scholarly journals Complete leading-order standard model corrections to quantum leptogenesis

2020 ◽  
Vol 2020 (9) ◽  
Author(s):  
Paul Frederik Depta ◽  
Andreas Halsch ◽  
Janine Hütig ◽  
Sebastian Mendizabal ◽  
Owe Philipsen
Keyword(s):  
Standard Model ◽  
Gauge Coupling ◽  
Thermal Bath ◽  
Leading Order ◽  
Boltzmann Equations ◽  
The Standard Model ◽  
Majorana Neutrinos ◽  
Infinite Loop ◽  
First Time ◽  
The Universe

Abstract Thermal leptogenesis, in the framework of the standard model with three additional heavy Majorana neutrinos, provides an attractive scenario to explain the observed baryon asymmetry in the universe. It is based on the out-of-equilibrium decay of Majorana neutrinos in a thermal bath of standard model particles, which in a fully quantum field theoretical formalism is obtained by solving Kadanoff-Baym equations. So far, the leading two-loop contributions from leptons and Higgs particles are included, but not yet gauge corrections. These enter at three-loop level but, in certain kinematical regimes, require a resummation to infinite loop order for a result to leading order in the gauge coupling. In this work, we apply such a resummation to the calculation of the lepton number density. The full result for the simplest “vanilla leptogenesis” scenario is by $$ \mathcal{O} $$ O (1) increased compared to that of quantum Boltzmann equations, and for the first time permits an estimate of all theoretical uncertainties. This step completes the quantum theory of leptogenesis and forms the basis for quantitative evaluations, as well as extensions to other scenarios.

scholarly journals Discovery probabilities of Majorana neutrinos based on cosmological data

2021 ◽  
Vol 103 (3) ◽  
Author(s):  
M. Agostini ◽  
G. Benato ◽  
S. Dell’Oro ◽  
S. Pirro ◽  
F. Vissani
Keyword(s):  
Majorana Neutrinos ◽  
Cosmological Data

Majorana neutrinos and CP violation in the leptonic sector

1986 ◽  
Vol 180 (3) ◽  
pp. 264-268 ◽  
Author(s):  
G.C. Branco ◽  
L. Lavoura ◽  
M.N. Rebelo
Keyword(s):  
Cp Violation ◽  
Leptonic Sector ◽  
Majorana Neutrinos

scholarly journals Search for Majorana Neutrinos inB−→π+μ−μ−Decays

2014 ◽  
Vol 112 (13) ◽  
Author(s):  
R. Aaij ◽  
B. Adeva ◽  
M. Adinolfi ◽  
A. Affolder ◽  
Z. Ajaltouni ◽  
...  
Keyword(s):  
Majorana Neutrinos

scholarly journals An effective field theory for non-relativistic Majorana neutrinos

2013 ◽  
Vol 2013 (12) ◽  
Author(s):  
S. Biondini ◽  
N. Brambilla ◽  
M. A. Escobedo ◽  
A. Vairo
Keyword(s):  
Field Theory ◽  
Effective Field Theory ◽  
Effective Field ◽  
Majorana Neutrinos

scholarly journals Higgs boson masses in the MSSM with heavy Majorana neutrinos

2011 ◽  
Vol 2011 (5) ◽  
Author(s):  
S. Heinemeyer ◽  
M. J. Herrero ◽  
S. Peñaranda ◽  
A. M. Rodríguez-Sánchez
Keyword(s):  
Higgs Boson ◽  
Majorana Neutrinos

Double-beta-decay suppression with three generations of Majorana neutrinos

1985 ◽  
Vol 32 (5) ◽  
pp. 1241-1243
Author(s):  
Charles Picciotto ◽  
Julie Kopac
Keyword(s):  
Beta Decay ◽  
Double Beta Decay ◽  
Three Generations ◽  
Majorana Neutrinos

scholarly journals Electromagnetic Properties of Neutrinos

2012 ◽  
Vol 2012 ◽  
pp. 1-47 ◽  
Author(s):  
C. Broggini ◽  
C. Giunti ◽  
A. Studenikin
Keyword(s):  
Radiative Decay ◽  
Dipole Moments ◽  
Form Factors ◽  
Transverse Magnetic ◽  
Electromagnetic Properties ◽  
Electromagnetic Form Factors ◽  
General Description ◽  
Electric Dipole Moments ◽  
Theoretical Predictions ◽  
Majorana Neutrinos

In this paper, we discuss the main theoretical aspects and experimental effects of neutrino electromagnetic properties. We start with a general description of the electromagnetic form factors of Dirac and Majorana neutrinos. Then, we discuss the theory and phenomenology of the magnetic and electric dipole moments, summarizing the experimental results and the theoretical predictions. We discuss also the phenomenology of a neutrino charge radius and radiative decay. Finally, we describe the theory of neutrino spin and spin-flavor precession in a transverse magnetic field and we summarize its phenomenological applications.

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