Axion

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Georg Raffelt, Max-Planck-Institut für Physik, München, Germany <strong>Axion</strong> Properties PONT d‘Avignon, 21-25 April 2008, Avignon, France Gluon coupling (Generic property) Mass Photon coupling Pion coupling Nucleon coupling (axial vector) Electron coupling (optional) L m L g L L L aG a a a α = s GG ~ a a 8 π f = f a a 0.6 eV /10 7 GeV C = N Ψ N γμ γ 2f m f ≈ π f Ψ ∂ aN 5 N μ a C = e Ψ e γ μ γ 2f Ψ ∂ a a ae 5 e μ a π g a γ FF ~ r r γ = − a = g a γ E ⋅ Baa 4 α ⎛ E ⎞ γ = ⎜ − 1. 92 ⎟ 2 π f ⎝ N ⎠ a π a C = a π ( π 0 π + ∂ − ...) μ μπ + ∂ a f f a π a a a a π π G G γ γ π a N N e e
Supernova 1987A Energy-Loss Argument Georg Raffelt, Max-Planck-Institut für Physik, München, Germany PONT d‘Avignon, 21-25 April 2008, Avignon, France Neutrino sphere SN 1987A neutrino signal Neutrino diffusion Volume emission of novel particles Emission of very weakly interacting particles would “steal” energy from the neutrino burst and shorten it. (Early neutrino burst powered by accretion, not sensitive to volume energy loss.) Late-time time signal most sensitive observable
Page 1 and 2: Georg G. Raffelt, Max-Planck Planck
Page 3 and 4: Georg Raffelt, Max-Planck-Institut
Page 5 and 6: Peccei-Quinn Mechanism Proposed in
Page 15: Georg Raffelt, Max-Planck-Institut
Page 19 and 20: Series of Papers on Axion Cosmology
Page 21 and 22: Series of Papers on Axion Cosmology
Page 23 and 24: Production of Cold Axion Population
Page 27 and 28: Axion Hot Dark Matter from Thermali
Page 29 and 30: Axion Hot Dark Matter Limits from P
Page 31 and 32: Experimental Tests of the Invisible
Page 43 and 44: Results and Plans of Tokyo Axion He
Page 45 and 46: LHC Magnet Mounted as a Telescope t
Page 53 and 54: Dimming of Supernovae without Cosmi
Page 59: Technological Applications of PVLAS

Axion

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