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Calculation of axion–photon–photon coupling in string theory

Kim, Jihn E.

Physics letters. B, 2014-07, Vol.735, p.95-100 [Periódico revisado por pares]

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Título:
Calculation of axion–photon–photon coupling in string theory
Autor: Kim, Jihn E.
Assuntos: [formula omitted] orbifold compactification ; Axion–photon–photon coupling ; Flipped SU GUT ; QCD axion
É parte de: Physics letters. B, 2014-07, Vol.735, p.95-100
Descrição: The axion search experiments invite a plausible estimation of the axion–photon–photon coupling constant c¯aγγ in string models with phenomenologically acceptable visible sectors. We present the calculation of c¯aγγ with an exact Peccei–Quinn symmetry. In the Huh–Kim–Kyae Z12−I orbifold compactification, we obtain c¯aγγ=1123388, and the low-temperature axion search experiments will probe the QCD corrected coupling, caγγ≃c¯aγγ−1.98≃0.91.
Editor: Elsevier B.V
Idioma: Inglês

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