The QCD axion, precisely

Abstract

We show how several properties of the QCD axion can be extracted at high precision using only first principle QCD computations. By combining NLO results obtained in chiral perturbation theory with recent Lattice QCD results the full axion potential, its mass and the coupling to photons can be reconstructed with percent precision. Axion couplings to nucleons can also be derived reliably, with uncertainties smaller than ten percent. The approach presented here allows the precision to be further improved as uncertainties on the light quark masses and the effective theory couplings are reduced. We also compute the finite temperature dependence of the axion potential and its mass up to the crossover region. For higher temperature we point out the unreliability of the conventional instanton approach and study its impact on the computation of the axion relic abundance.

38 pages, 6 figures. v2: Discussion in sec. 2.4 simplified, fig.6 corrected, published version

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• Axion Emission from Proton Cooper Pairs in Neutron Stars
• Macroscopic states in Bose-Einstein condensate dark matter model with axionlike interaction
• QCD axion and Neutrino induced by Hidden flavor structure
• Quasiparticle Cosmology
• How light can ALP dark matter be?
• Probing ALP-photon couplings in Neutron Stars: Scalar versus pseudoscalar cases
• Solar Kaluza-Klein axion search with NEWS-G
• Axion Dark Matter Archaeology with Primordial Gravitational Waves
• An introduction to axions and their detection
• Axions at the meV Crossroads: Theory, Cosmology, Astrophysics, and Experiments
• Axion signatures from supernova explosions through the nucleon electric-dipole portal
• Detectability of the Phase Transition Gravitational Waves in the DFSZ axion Model
• Axion dark matter with not quite black hole domination
• One-loop proton decay from Peccei-Quinn symmetry
• Revisiting the sphaleron and axion production rates in QCD at high temperatures
• Axion dark matter detection via shift current
• Effective ALP-Photon Coupling in External Magnetic Fields
• Estimating ${\chi }_{\mathrm{top}}$ Lattice Artifacts from Flowed SU(2) Calorons
• Remarks on the Debye Length and the Topological Susceptibilty in Non-Abelian Gauge Theory
• Neutrino Driven Explosions aided by Axion Cooling in Multidimensional Simulations of Core-Collapse Supernovae
• Topological Susceptibility to High Temperatures via Reweighting
• Axion-Neutrino Interplay in a Gauged Two-Higgs-Doublet Model
• New method of probing an oscillating EDM induced by axionlike dark matter using an RF Wien Filter in storage rings
• Axion Quality Straight from the GUT
• Forecast constraints on the axion-photon coupling from interstellar medium heating
• Constraints on extended axion structures from the lensing of fast radio bursts
• Integer solutions to the anomaly equations for a class of chiral gauge theories
• Anomaly Ratio Distributions of Hadronic Axion Models with Multiple Heavy Quarks
• Five dimensional $SU(5)\times U(1{)}_{\mathrm{PQ}}$ grand unification
• Axions in Baryon Chiral Perturbation Theory
• The Search for the Cosmological Axion -- A New Refined Narrow Mass Window and Detection Scheme
• Inching toward the QCD Axions with Axion Magnetic Resonance in Helioscopes