Constraining Light Gravitino Mass from Cosmic Microwave Background

Abstract

We investigate the possibilities of constraining the light gravitino mass m_{3/2} from future cosmic microwave background (CMB) surveys. A model with light gravitino with the mass m_{3/2}<O(10) eV is of great interest since it is free from the cosmological gravitino problem and, in addition, can be compatible with many baryogenesis/leptogenesis scenarios such as the thermal leptogenesis. We show that the lensing of CMB anisotropies can be a good probe for m_{3/2} and obtain an expected constraint on m_{3/2} from precise measurements of lensing potential in the future CMB surveys, such as the PolarBeaR and CMBpol experiments. If the gravitino mass is m_{3/2}=1 eV, we will obtain the constraint for the gravitino mass as m_{3/2} < 3.2 eV (95% C.L.) for the case with Planck+PolarBeaR combined and m_{3/2}=1.04^{+0.22}_{-0.26} eV (68% C.L.) for CMBpol. The issue of Bayesian model selection is also discussed.

22 pages, 6 figures, 7 tables, references are added, accepted for publication in JCAP

References in corpus (38)

• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Cosmological parameters from CMB and other data: a Monte-Carlo approach
• Stable clustering, the halo model and nonlinear cosmological power spectra
• Theories with Gauge-Mediated Supersymmetry Breaking
• Bayes in the sky: Bayesian inference and model selection in cosmology
• Weak Gravitational Lensing of the CMB
• Constraining Warm Dark Matter candidates including sterile neutrinos and light gravitinos with WMAP and the Lyman-alpha forest
• Cosmological parameters from combining the Lyman-alpha forest with CMB, galaxy clustering and SN constraints
• Leptogenesis as the origin of matter
• CMB Lensing Reconstruction on the Full Sky
• Lyman-alpha constraints on warm and on warm-plus-cold dark matter models
• A Nested Sampling Algorithm for Cosmological Model Selection
• Applications of Bayesian model selection to cosmological parameters
• CMBPol Mission Concept Study: Probing Inflation with CMB Polarization
• Probing cosmological parameters with the CMB: Forecasts from full Monte Carlo simulations
• Determining Neutrino Mass from the CMB Alone
• Fitting CMB data with cosmic strings and inflation
• Measuring the effective complexity of cosmological models
• Lensed CMB power spectra from all-sky correlation functions
• On model selection forecasting, Dark Energy and modified gravity
• Probing neutrino masses with CMB lensing extraction
• Current cosmological bounds on neutrino masses and relativistic relics
• Cosmological mass limits on neutrinos, axions, and other light particles
• Cosmological Information from Lensed CMB Power Spectra
• The Lyman-alpha forest and WMAP year three
• Bayesian model selection and isocurvature perturbations
• Using BBN in cosmological parameter extraction from CMB: a forecast for Planck
• A Bayesian analysis of the primordial power spectrum
• Cosmological parameter estimation and Bayesian model comparison using VSA data
• The Formation of Cosmic Structures in a Light Gravitino Dominated Universe
• Probing the Effective Number of Neutrino Species with Cosmic Microwave Background
• Occam's razor meets WMAP
• Revisiting the Constraint on the Helium Abundance from CMB
• Primordial Helium Abundance from CMB: a constraint from recent observations and a forecast
• Composite Messenger Baryon as a Cold Dark Matter
• When can the Planck satellite measure spectral index running?
• Determining the mass for an ultralight gravitino at LHC
• Determining the Mass for a Light Gravitino

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• Cosmological Constraint on the Light Gravitino Mass from CMB Lensing and Cosmic Shear
• Supersymmetric explanation of the muon g-2 anomaly with and without stable neutralino
• Evidence for dark matter modulation in CoGeNT?
• Low Scale Direct Gauge Mediation with Perturbatively Stable Vacuum
• Cascade supersymmetry breaking and low-scale gauge mediation
• Probing the primordial power spectra with inflationary priors
• Strong dark matter constraints on GMSB models
• Weighing the Light Gravitino Mass with Weak Lensing Surveys
• WIMP dark matter in gauge-mediated SUSY breaking models and its phenomenology