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Supernova limits on 'QCD axion-like particles'

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arxiv 2405.00153 v2 pith:QN2EHW7D submitted 2024-04-30 hep-ph astro-ph.HE

Alessandro Lella , Eike Ravensburg , Pierluca Carenza , M. C. David Marsh This is my paper · ORCID
classification hep-phastro-ph.HE
keywords alpsphotonsaxion-likecoupledcouplingsgluonsgtrsim1observables
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abstract

In this paper, we explore the phenomenology of massive Axion-Like Particles (ALPs) coupled to quarks and gluons, dubbed 'QCD ALPs', with an emphasis on the associated low-energy observables. ALPs coupled to gluons and quarks not only induce nuclear interactions at scales below the QCD-scale, relevant for ALP production in supernovae (SNe), but naturally also couple to photons similarly to the QCD-axion. We discuss the link between the high-energy formulation of ALP theories and their effective couplings with nucleons and photons. The induced photon coupling allows ALPs with masses $m_a\gtrsim1$ MeV to efficiently decay into photons, and astrophysical observables severely constrain the ALP parameter space. We show that a combination of arguments related to SN events rule out ALP-nucleon couplings down to $g_{aN}\gtrsim 10^{-11}- 10^{-10}$ for $m_a\gtrsim1$ MeV - a region of the parameter space that was hitherto unconstrained.

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Cited by 6 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. In-flight positron annihilation as a probe of feebly interacting particles

    hep-ph 2025-01 conditional novelty 6.0 of 10

    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...

  2. Disentangling axion-like particle couplings to nucleons via a delayed signal in Super-Kamiokande from a future supernova

    hep-ph 2024-12 conditional novelty 6.0 of 10

    A future nearby supernova could reveal sub-MeV axion-like particles through a delayed ~30 MeV photon signal in Super-Kamiokande and Hyper-Kamiokande, probing couplings down to about 3 x 10^-6.

  3. Time-delayed gamma-ray signatures of heavy axions from core-collapse supernovae

    hep-ph 2024-12 conditional novelty 6.0 of 10

    No gamma-ray excess from four supernovae in Fermi-LAT data yields the strongest constraints yet on MeV-to-GeV heavy axions coupled to both QED and QCD.

  4. A comprehensive study of ALPs from $B$-decays

    hep-ph 2024-12 conditional novelty 6.0 of 10

    The paper derives the complete two-loop flavor-changing coupling of axion-like particles to b and s quarks and uses it to set updated limits on f_a in KSVZ, DFSZ and Flaxion models.

  5. Probing a diffuse flux of axion-like particles from galactic supernovae with neutrino water Cherenkov detectors

    hep-ph 2024-12 conditional novelty 6.0 of 10

    MeV-mass axion-like particles from galactic supernovae can form a diffuse flux detectable via a p -> p gamma in water Cherenkov detectors, and Super-Kamiokande data exclude a new region of the ALP parameter space.

  6. Axion-induced pair production: a new strategy for axion detection

    hep-ph 2024-11 conditional novelty 6.0 of 10

    Axion-induced pair production in a nuclear electric field is the dominant detection channel for axions above roughly 10 MeV and substantially improves projected supernova axion sensitivities.

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