Fingerprint of GeV scale right-handed neutrinos on inflationary gravitational waves and PTA data

Abstract

We show that the seesaw mechanisms that exhibit right-handed neutrino mass-dependent non-standard post-inflationary cosmology make blue-tilted inflationary gravitational waves (GW) compatible with the recent findings of nHz stochastic GW background by the pulsar-timing arrays (PTAs) for high reheating temperatures. The right-handed neutrino (RHN) mass scale has to be $\mathcal{O}(\mathrm{GeV})$. Remarkably, such a scenario produces a correlated signature testable by the future LIGO run. In addition to contributing to the active neutrino masses, $\mathcal{O}(\mathrm{GeV})$ RHNs generate baryon asymmetry of the universe via low-scale-leptogenesis. They can be searched for in collider experiments. Therefore, the recent detection by PTAs is not only exciting for GWs in the nHz range; it paves the way to test and constrain well-studied mechanisms, such as seesaws, with a low-frequency and a correlated measurement of high-frequency GW spectral features, complementary to particle physics searches.

7+3 pages, 2 captioned figures, significantly revised, title changed, an additional author, accepted for publication in Phys. Rev. D Letter

References in corpus (30)

• The NANOGrav 15-year Data Set: Evidence for a Gravitational-Wave Background
• Three Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Polarization Analysis
• Search for an isotropic gravitational-wave background with the Parkes Pulsar Timing Array
• Searching for the nano-Hertz stochastic gravitational wave background with the Chinese Pulsar Timing Array Data Release I
• The second data release from the European Pulsar Timing Array III. Search for gravitational wave signals
• The NANOGrav 15-year Data Set: Search for Signals from New Physics
• The NANOGrav 12.5-year Data Set: Search For An Isotropic Stochastic Gravitational-Wave Background
• Scientific Objectives of Einstein Telescope
• G-inflation: inflation driven by the Galileon field
• Upper Limits on the Isotropic Gravitational-Wave Background from Advanced LIGO's and Advanced Virgo's Third Observing Run
• On the evidence for a common-spectrum process in the search for the nanohertz gravitational-wave background with the Parkes Pulsar Timing Array
• Improved Calculation of the Primordial Gravitational Wave Spectrum in the Standard Model
• Cosmic String Interpretation of NANOGrav Pulsar Timing Data
• Common-red-signal analysis with 24-yr high-precision timing of the European Pulsar Timing Array: Inferences in the stochastic gravitational-wave background search
• Has NANOGrav found first evidence for cosmic strings?
• Implications of the NANOGrav results for inflation
• Inflationary interpretation of the stochastic gravitational wave background signal detected by pulsar timing array experiments
• Probing reheating temperature of the universe with gravitational wave background
• Precision calculations of the gravitational wave background spectrum from inflation
• Blue-tilted Tensor Spectrum and Thermal History of the Universe
• Fingerprint of Low-Scale Leptogenesis in the Primordial Gravitational-Wave Spectrum
• Decay of Cosmic String Loops Due to Particle Radiation
• Baryogenesis from ultralight primordial black holes and strong gravitational waves from cosmic strings
• Blue-tilted inflationary tensor spectrum and reheating in the light of NANOGrav results
• Generalised tensor fluctuations and inflation
• Electroweak naturalness in three-flavour Type I see-saw and implications for leptogenesis
• Implications of the NANOGrav result on primordial gravitational waves in nonstandard cosmologies
• PBH-infused seesaw origin of matter and unique gravitational waves
• Gravitational Waves-Tomography of Low-Scale-Leptogenesis
• Revisiting slow-roll dynamics and the tensor tilt in general single-field inflation

Cited by in corpus (17)

• Probing the equation of state of the early Universe with pulsar timing arrays
• Implications for the non-Gaussianity of curvature perturbation from pulsar timing arrays
• Can the gravitational wave background feel wiggles in spacetime?
• Enhancement of gravitational waves at Q-ball decay including non-linear density perturbations
• Null energy condition violation during inflation and pulsar timing array observations
• Constraints on holographic QCD phase transitions from PTA observations
• Impact of memory-burdened black holes on primordial gravitational waves in light of Pulsar Timing Array
• Tomography of flavoured leptogenesis with primordial blue gravitational waves
• Constraining the history of reheating with the NANOGrav 15-year data
• Probing flavored regimes of leptogenesis with gravitational waves from cosmic strings
• Interplay between the muon $g-2$ anomaly and the PTA nHZ gravitational waves from domain walls in next-to minimal supersymmetric standard model
• Climbing over the potential barrier during inflation via null energy condition violation
• Complementarity between Cosmic String Gravitational Waves and long-lived particle searches in a laboratory
• Connecting Inflation to the NANOGrav 15-year Data Set via Massive Gravity
• Implications of pulsar timing arrays for Gauss-Bonnet Inflation
• Axion Dark Matter Archaeology with Primordial Gravitational Waves
• Cosmic Overture Echoed in a Stellar Final Act: Implications of Nanohertz Gravitational Waves for Core Collapse Supernova Neutrinos