A Fresh Look at Axions and SN 1987A

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dc.creatorKeil, Wolfgang
dc.creatorJanka, Hans-Thomas
dc.creatorSchramm, David N.
dc.creatorSigl, Guenter
dc.creatorTurner, Michael S.
dc.creatorEllis, John
dc.date1996-12-23
dc.date.accessioned2026-07-07T10:31:44Z
dc.date.available2026-07-07T10:31:44Z
dc.descriptionWe re-examine the very stringent limits on the axion mass based on the strength and duration of the neutrino signal from SN 1987A, in the light of new measurements of the axial-vector coupling strength of nucleons, possible suppression of axion emission due to many-body effects, and additional emission processes involving pions. The suppression of axion emission due to nucleon spin fluctuations induced by many-body effects degrades previous limits by a factor of about 2. Emission processes involving thermal pions can strengthen the limits by a factor of 3-4 within a perturbative treatment that neglects saturation of nucleon spin fluctuations. Inclusion of saturation effects, however, tends to make the limits less dependent on pion abundances. The resulting axion mass limit also depends on the precise couplings of the axion and ranges from 0.5x10**(-3) eV to 6x10**(-3) eV.
dc.description32 latex pages, 13 postscript figures included, uses revtex.sty, submitted to Physical Review D
dc.identifierhttps://arxiv.org/abs/astro-ph/9612222
dc.identifierhttp://arxiv.org/abs/astro-ph/9612222
dc.identifierPhys.Rev.D56:2419-2432,1997
dc.identifierdoi:10.1103/PhysRevD.56.2419
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/178515
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Phenomenology
dc.titleA Fresh Look at Axions and SN 1987A
dc.typetext

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