Supernova bounds on new scalars from resonant and soft emission

Abstract

We study supernova cooling constraints on new light scalars that mix with the Higgs, couple only to nucleons, or couple only to leptons. We show that in all these cases scalars with masses smaller than the plasma frequency in the supernova core are efficiently produced by resonant mixing with the in-medium longitudinal degree of freedom of the photon. The resulting bounds are free from uncertainties associated to the rate of emission of the scalar in nucleon-nucleon scatterings, which would otherwise badly affect the Higgs-mixed and nucleophilic scenarios. Heavier scalars that mix with the Higgs or couple only to nucleons are mostly produced by nucleon bremsstrahlung, and we obtain a conservative approximation for the corresponding rate using a soft theorem. We also analyse the impact of different supernova profiles, nucleon degeneracy, trapping and scalar decays on the constraints.

23 pages plus appendices, version published in JHEP

References in corpus (26)

• Gauge Singlet Scalars as Cold Dark Matter
• Theory of Core-Collapse Supernovae
• Light Dark Matter: Models and Constraints
• Stellar cooling bounds on new light particles: plasma mixing effects
• Three-dimensional core-collapse supernova simulated using a 15 $M_{\odot }$ progenitor
• Muon Creation in Supernova Matter Facilitates Neutrino-driven Explosions
• Making dark matter out of light: freeze-in from plasma effects
• Supernova Bounds on the Dark Photon Using its Electromagnetic Decay
• A systematic study of proto-neutron star convection in three-dimensional core-collapse supernova simulations
• Axion-sourced fireballs from supernovae
• Getting the most on supernova axions
• Strong Supernova 1987A Constraints on Bosons Decaying to Neutrinos
• NS 1987A in SN 1987A
• The Collapse and Three-Dimensional Explosion of Three-Dimensional, vis à vis One-Dimensional, Massive-star Supernova Progenitor Models
• Supernova Simulations Confront SN 1987A Neutrinos
• Revisiting supernova constraints on a light CP-even scalar
• Cosmological beam dump: constraints on dark scalars mixed with the Higgs boson
• Scalar Direct Detection: In-Medium Effects
• Stellar limits on scalars from electron-nucleus bremsstrahlung
• Emission lines due to ionizing radiation from a compact object in the remnant of Supernova 1987A
• Improved stellar limits on a light CP-even scalar
• Constraining heavy axion-like particles by energy deposition in Globular Cluster stars
• Cosmological Constraints on Dark Scalar
• From Supernovae to Neutron Stars: A Systematic Approach to Axion Production at Finite Density
• Stellar cooling limits on light scalar boson revisited
• SN1987A constraints to BSM models with extra neutral bosons near the trapping regime: $U(1{)}_{L_{\mu }-L_{\tau }}$ model as an illustrative example

Cited by in corpus (6)

• Leading bounds on micro- to picometer fifth forces from neutron star cooling
• Sub-GeV dark matter and nano-Hertz gravitational waves from a classically conformal dark sector
• Probing new hadronic forces with heavy exotic atoms
• Minimal Electroweak Baryogenesis via Domain Walls
• Searching for exotic scalars at fusion reactors
• Photonic Freeze-In