Constraints on particle physics beyond the standard model from big bang nucleosynthesis

1997 ◽  
Author(s):  
Keith A. Olive
Keyword(s):  
Standard Model ◽  
Particle Physics ◽  
Big Bang ◽  
Beyond The Standard Model ◽  
Big Bang Nucleosynthesis ◽  
The Standard Model

IS A 17 keV NEUTRINO COMPATIBLE WITH SUPERNOVA AND NUCLEOSYNTHESIS CONSTRAINTS?

1992 ◽  
Vol 07 (10) ◽  
pp. 821-834
Author(s):  
I. Z. ROTHSTEIN
Keyword(s):  
Standard Model ◽  
Big Bang ◽  
Beyond The Standard Model ◽  
Big Bang Nucleosynthesis ◽  
The Standard Model ◽  
Work Done

In this article I review the work done on accommodating a 17 keV neutrino. Special emphasis is paid to supernova and big-bang nucleosynthesis constraints since, when in tandem, they are particularly insidious. It is shown that a 17 keV neutrino is compatible with the constraints, but that it is necessary to go well beyond the standard model to evade them.

BIG BANG NUCLEOSYNTHESIS: AN UPDATE

1996 ◽  
Vol 11 (03) ◽  
pp. 409-428 ◽  
Author(s):  
KEITH A. OLIVE ◽  
SEAN T. SCULLY
Keyword(s):  
Standard Model ◽  
Light Element ◽  
Big Bang ◽  
Current Status ◽  
Beyond The Standard Model ◽  
Effective Number ◽  
Big Bang Nucleosynthesis ◽  
Element Abundances ◽  
The Standard Model

The current status of big bang nucleosynthesis is reviewed with an emphasis on the comparison between the observational determination of the light element abundances of D , 3 He , 4 He and 7 Li and the predictions from theory. In particular, we present new analyses for 4 He and 7 Li . Implications for physics beyond the standard model are also discussed. In addition, limits on the effective number of neutrino flavors are updated.

scholarly journals An allowed window for heavy neutral leptons below the kaon mass

2021 ◽  
Vol 2021 (7) ◽  
Author(s):  
Kyrylo Bondarenko ◽  
Alexey Boyarsky ◽  
Juraj Klaric ◽  
Oleksii Mikulenko ◽  
Oleg Ruchayskiy ◽  
...  
Keyword(s):  
Standard Model ◽  
Parameter Space ◽  
Big Bang ◽  
Majorana Fermions ◽  
Neutrino Masses ◽  
Beyond The Standard Model ◽  
Big Bang Nucleosynthesis ◽  
Kaon Mass ◽  
The Standard Model ◽  
The Universe

Abstract The extension of the Standard Model with two gauge-singlet Majorana fermions can simultaneously explain two beyond-the-Standard-model phenomena: neutrino masses and oscillations, as well as the origin of the matter-antimatter asymmetry in the Universe. The parameters of such a model are constrained by the neutrino oscillation data, direct accelerator searches, big bang nucleosynthesis, and requirement of successful baryogenesis. We show that their combination still leaves an allowed region in the parameter space below the kaon mass. This region can be probed by the further searches of NA62, DUNE, or SHiP experiments.

Removing the conspiracy of BSM physics and BSM cosmology

2019 ◽  
Vol 28 (13) ◽  
pp. 1941012 ◽  
Author(s):  
Maxim Yu. Khlopov
Keyword(s):  
Standard Model ◽  
Particle Physics ◽  
Elementary Particles ◽  
Physical Basis ◽  
Particle Model ◽  
Beyond The Standard Model ◽  
Cosmological Scenario ◽  
The Standard Model ◽  
Modern Cosmology ◽  
Bsm Physics

The standard model (SM) of elementary particles finds no contradictions in the experimental data, but appeals to extensions for solutions of its internal problems and physical basis of the modern cosmology. The latter is based on inflationary models with baryosynthesis and dark matter/energy that involves Physics beyond the standard model (BSM) of elementary particles. However, studies of the BSM physical basis of the modern cosmology inevitably reveals additional particle model-dependent cosmological consequences that go beyond the modern standard cosmological model. The mutual relationship of the BSM particle physics basis of the modern cosmology and the nontrivial features of the corresponding cosmological scenario are the subject of this paper.

scholarly journals EXTREMELY ENERGETIC COSMIC NEUTRINOS: OPPORTUNITIES FOR ASTROPHYSICS, PARTICLE PHYSICS, AND COSMOLOGY

2006 ◽  
Vol 21 (supp01) ◽  
pp. 12-19 ◽  
Author(s):  
ANDREAS RINGWALD
Keyword(s):  
Standard Model ◽  
Particle Physics ◽  
Beyond The Standard Model ◽  
The Standard Model

Existing and planned observatories for cosmic neutrinos open up a huge window in energy from 107 to 1017 GeV. Here, we discuss in particular the possibilities to use extremely energetic cosmic neutrinos as a diagnostic of astrophysical processes, as a tool for particle physics beyond the Standard Model, and as a probe of cosmology.

scholarly journals Progressing Beyond the Standard Model

2013 ◽  
Vol 2013 ◽  
pp. 1-12 ◽  
Author(s):  
B. A. Robson
Keyword(s):  
Standard Model ◽  
Particle Physics ◽  
Alternative Model ◽  
Generation Model ◽  
Beyond The Standard Model ◽  
Basic Assumptions ◽  
Three Generations ◽  
Considerable Success ◽  
The Standard Model

The Standard Model has enjoyed considerable success in describing a whole range of phenomena in particle physics. However, the model is considered incomplete because it provides little understanding of other empirical observations such as, the existence of three generations of leptons and quarks, which apart from mass have similar properties. This paper examines in some detail the basic assumptions upon which the Standard Model is built and compares these with the assumptions of an alternative model, the Generation Model. The Generation Model provides agreement with the Standard Model for those phenomena which the Standard Model is able to describe, but it is shown that the assumptions inherent in the Generation Model allow progress beyond the Standard Model.

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