Search results for "Big-bang nucleosynthesis"

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Testing standard and nonstandard neutrino physics with cosmological data

2012

Cosmological constraints on the sum of neutrino masses and on the effective number of neutrino species in standard and nonstandard scenarios are computed using the most recent available cosmological data. Our cosmological data sets include the measurement of the baryonic acoustic oscillation (BAO) feature in the data release 9 CMASS sample of the baryon oscillation spectroscopic survey. We study in detail the different degeneracies among the parameters, as well as the impact of the different data sets used in the analyses. When considering bounds on the sum of the three active neutrino masses, the information in the BAO signal from galaxy clustering measurements is approximately equally pow…

AstrofísicaNuclear and High Energy PhysicsParticle physicsCosmology and Nongalactic Astrophysics (astro-ph.CO)Cosmic background radiationFOS: Physical sciencesAstrophysics::Cosmology and Extragalactic AstrophysicsAstrophysics7. Clean energy01 natural sciencesCosmologyPower spectrumsymbols.namesakeHigh Energy Physics - Phenomenology (hep-ph)0103 physical sciencesNeutrino oscillationTelescope010303 astronomy & astrophysicsDigital sky surveyPhysicsHubble constantCosmologia010308 nuclear & particles physicsMatter power spectrumBig-bang nucleosynthesisCMB cold spotHigh Energy Physics - Phenomenology13. Climate actionParameterssymbolsBaryon acoustic-oscillationsBaryon acoustic oscillationsNeutrinoData releaseAstrophysics - Cosmology and Nongalactic AstrophysicsHubble's lawPhysical Review D
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