Is the Universal String Axion the QCD Axion

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We consider the class of effective supergravity theories from the weakly coupled heterotic string in which local supersymmetry is broken by gaugino condensation in a hidden sector, with dilaton stabilization achieved through corrections to the classical dilaton Kahler potential. If there is a single hidden condensing (simple) gauge group, the axion is massless (up to contributions from higher dimension operators) above the QCD condensation scale. We show how the standard relation between the axion mass and its Planck scale coupling constant is modified in this class of models due to a contribution to the axion-gluon coupling that appears below the ... continued below

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Gaillard, Mary K. & Kain, Ben October 14, 2005.

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We consider the class of effective supergravity theories from the weakly coupled heterotic string in which local supersymmetry is broken by gaugino condensation in a hidden sector, with dilaton stabilization achieved through corrections to the classical dilaton Kahler potential. If there is a single hidden condensing (simple) gauge group, the axion is massless (up to contributions from higher dimension operators) above the QCD condensation scale. We show how the standard relation between the axion mass and its Planck scale coupling constant is modified in this class of models due to a contribution to the axion-gluon coupling that appears below the scale of supersymmetry breaking when gluinos are integrated out. In particular there is a point of enhanced symmetry in parameter space where the axion mass is suppressed. We revisit the question of the universal axion as the Peccei-Quinn axion in the light of these results, and find that the strong CP problem is avoided in most compactifications of the weakly coupled heterotic string.

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  • Journal Name: Nuclear Physics B; Journal Volume: 734; Journal Issue: 1-2; Related Information: Journal Publication Date: 01/30/2006

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  • Report No.: LBNL--59025
  • Report No.: UCB-PTH-05/36, hep-th/1510190
  • Grant Number: DE-AC02-05CH11231
  • Grant Number: NSF:PHY-0098840
  • Office of Scientific & Technical Information Report Number: 881607
  • Archival Resource Key: ark:/67531/metadc876558

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  • October 14, 2005

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  • Sept. 21, 2016, 2:29 a.m.

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  • Sept. 30, 2016, 1:58 p.m.

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Gaillard, Mary K. & Kain, Ben. Is the Universal String Axion the QCD Axion, article, October 14, 2005; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc876558/: accessed December 10, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.