Axion emission from supernova with axion-pion-nucleon contact interaction

Abstract

We examine the axion emission from supernovae with a complete set of relevant axion couplings including the axion-pion-nucleon contact interaction which was ignored in the previous studies. Two processes are affected by the axion-pion-nucleon contact interaction, ${\pi }^{-}+p\to n+a$ and $n+p\to n+p+a$, and these processes can be the dominant source of axions for some region in the axion parameter space or in astrophysical conditions encountered inside supernovae. We find that the contact interaction can enhance the axion emissivity of ${\pi }^{-}+p\to n+a$ by a factor of $2-4$, while the effect on $n+p\to n+p+a$ is not significant. We also discuss the relative importance of other pion-induced processes such as ${\pi }^0+n\to n+a$ and ${\pi }^{-}+{\pi }^0\to {\pi }^{-}+a$.

arXiv comment20 pages, 6 figures, v2: minor changes, references updated, appendix added, matches the published version

References in corpus (21)

• The QCD axion, precisely
• New experimental approaches in the search for axion-like particles
• Experimental Searches for the Axion and Axion-like Particles
• The landscape of QCD axion models
• Neutrino Emission from Neutron Stars
• Astrophysical Axion Bounds
• The Physics of Core-Collapse Supernovae
• Flaxion: a minimal extension to solve puzzles in the standard model
• Improved axion emissivity from a supernova via nucleon-nucleon bremsstrahlung
• The Axiflavon
• Recent Progress in the Physics of Axions and Axion-Like Particles
• Hadronic axion window and the big-bang nucleosynthesis
• A Fresh Look at Axions and SN 1987A
• A Self-Consistent Approach to Neutral-Current Processes in Supernova Cores
• Enhanced Supernova Axion Emission and its Implications
• Pions in hot dense matter and their astrophysical implications
• Observable signatures of enhanced axion emission from protoneutron stars
• Stellar Evolution confronts Axion Models
• The QCD Axion at Finite Density
• Accidental Peccei-Quinn Symmetry from Discrete Flavour Symmetry and Pati-Salam
• Precision axion physics with running axion couplings

Cited by in corpus (25)

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• Supernova limits on 'QCD axion-like particles'
• From Supernovae to Neutron Stars: A Systematic Approach to Axion Production at Finite Density
• Probing protoneutron stars with gamma-ray axionscopes
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