Helium and deuterium abundances as a test for the time variation of the fine structure constant and the Higgs vacuum expectation value

We use the semi-analytic method of Esmailzadeh <i>et al</i> (1991 <i>Astrophys. J.</i> 378 504–18) to calculate the abundances of Helium and Deuterium produced during Big Bang nucleosynthesis assuming the fine structure constant and the Higgs vacuum expectation value may vary...

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Autores principales: Chamoun, Nidal, Landau, Susana Judith, Mosquera, Mercedes Elisa, Vucetich, Héctor
Formato: Articulo
Lenguaje:Inglés
Publicado: 2007
Materias:
Física
Astronomía
helium
deuterium
Higgs vacuum
fine structure
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/131069
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-131069
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
Astronomía
helium
deuterium
Higgs vacuum
fine structure
spellingShingle Física
Astronomía
helium
deuterium
Higgs vacuum
fine structure
Chamoun, Nidal
Landau, Susana Judith
Mosquera, Mercedes Elisa
Vucetich, Héctor
Helium and deuterium abundances as a test for the time variation of the fine structure constant and the Higgs vacuum expectation value
topic_facet Física
Astronomía
helium
deuterium
Higgs vacuum
fine structure
description We use the semi-analytic method of Esmailzadeh <i>et al</i> (1991 <i>Astrophys. J.</i> 378 504–18) to calculate the abundances of Helium and Deuterium produced during Big Bang nucleosynthesis assuming the fine structure constant and the Higgs vacuum expectation value may vary in time. We analyze the dependence on the fundamental constants of the nucleon mass, nuclear binding energies and cross sections involved in the calculation of the abundances. Unlike previous works, we do not assume the chiral limit of QCD. Rather, we take into account the quark masses and consider the one-pion exchange potential, within perturbation theory, for the proton-neutron scattering. However, we do not consider the time variation of the strong interactions scale but attribute the changes in the quark masses to the temporal variation of the Higgs vacuum expectation value. Using the observational data of the helium and deuterium, we put constraints on the variation of the fundamental constants between the time of nucleosynthesis and the present time.
format Articulo
Articulo
author Chamoun, Nidal
Landau, Susana Judith
Mosquera, Mercedes Elisa
Vucetich, Héctor
author_facet Chamoun, Nidal
Landau, Susana Judith
Mosquera, Mercedes Elisa
Vucetich, Héctor
author_sort Chamoun, Nidal
title Helium and deuterium abundances as a test for the time variation of the fine structure constant and the Higgs vacuum expectation value
title_short Helium and deuterium abundances as a test for the time variation of the fine structure constant and the Higgs vacuum expectation value
title_full Helium and deuterium abundances as a test for the time variation of the fine structure constant and the Higgs vacuum expectation value
title_fullStr Helium and deuterium abundances as a test for the time variation of the fine structure constant and the Higgs vacuum expectation value
title_full_unstemmed Helium and deuterium abundances as a test for the time variation of the fine structure constant and the Higgs vacuum expectation value
title_sort helium and deuterium abundances as a test for the time variation of the fine structure constant and the higgs vacuum expectation value
publishDate 2007
url http://sedici.unlp.edu.ar/handle/10915/131069
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AT landaususanajudith heliumanddeuteriumabundancesasatestforthetimevariationofthefinestructureconstantandthehiggsvacuumexpectationvalue
AT mosqueramercedeselisa heliumanddeuteriumabundancesasatestforthetimevariationofthefinestructureconstantandthehiggsvacuumexpectationvalue
AT vucetichhector heliumanddeuteriumabundancesasatestforthetimevariationofthefinestructureconstantandthehiggsvacuumexpectationvalue
bdutipo_str Repositorios
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