REVIEW 4 cited by
Revisiting supernova constraints on a light CP-even scalar
Not yet reviewed by Pith; the record is open.
This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.
SPECIMEN: schema-true, not a live event
T0 review · schema-true
One-sentence machine reading of the paper's core claim.
pith:XXXXXXXX · record.json · timestamp
abstract
A light CP-even Standard Model (SM) gauge-singlet scalar $S$ can be produced abundantly in the supernova core, via the nucleon bremsstrahlung process $N N \to N N S$, due to its mixing with the SM Higgs boson. Including the effective $S$ coupling to both nucleons and the pion mediators, we evaluate the production amplitude for the $S$ particle and point out a key difference with the well-known light CP-odd scalar (axion) and vector boson (dark photon) cases. Taking the subsequent decay and re-absorption of $S$ into account, we present a complete calculation of the energy loss rate for the $S$ particle. We then use the SN1987A luminosity constraints to derive updated supernova limits on the mixing of the scalar $S$ with the SM Higgs boson. We find that the mixing angle $\sin\theta$ with the SM Higgs is excluded only in the narrow range of $3.9 \times 10^{-7}$ to $7.0 \times 10^{-6}$, depending on the scalar mass up to about 147 MeV, beyond which the supernova limit disappears.
Forward citations
Cited by 4 Pith papers
-
Feebly-Interacting Peccei-Quinn Model
A feebly-interacting PQ scalar with large wave-function renormalization can generate a large axion decay constant while keeping all mass scales near the TeV scale, predicting a light PQ Higgs and new dark matter scenarios.
-
In-flight positron annihilation as a probe of feebly interacting particles
In-flight annihilation of positrons produced by supernova feebly interacting particles gives the strongest astrophysical bounds on their electron couplings for masses of roughly 10-200 MeV, covering ALPs, sterile neut...
-
Photonic Freeze-In
Dark matter can be produced by photon annihilation through a loop-generated F² operator, a new photonic freeze-in scenario that is testable at low reheat temperatures.
-
Dark Matter Capture in Supernovae Modifies Dark Photon Cooling Bounds
Asymmetric dark matter captured in SN progenitors can form a 'dark photosphere' that traps dark photons and reopens SN1987A-excluded parameter space.
Discussion (0). Continue with ORCID to comment.