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Academic Journal
Axion couplings in heterotic string theory
Prateek Agrawal, Michael Nee, Mario Reig
Journal of High Energy Physics, Vol 2025, Iss 2, Pp 1-35 (2025)
Sparad:
| Titel | Axion couplings in heterotic string theory |
|---|---|
| Författarna | Prateek Agrawal, Michael Nee, Mario Reig |
| Utgivningsår |
2025
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| Källa |
Journal of High Energy Physics, Vol 2025, Iss 2, Pp 1-35 (2025)
|
| Beskrivning |
Abstract We study the coupling of axions to gauge bosons in heterotic string theory. The axion-gauge boson couplings in the low energy 4d theory are derived by matching mixed anomalies between higher-form global symmetries and the zero-form gauge symmetry in the 10d theory. When the standard model gauge group is embedded in a single simple group in the 10d theory — as is the case for almost all heterotic models studied in the literature — the ratio of the axion-photon coupling to the axion mass is bounded above by the QCD line. This bound is relevant for a large number of axion searches which have sensitivity to axion parameter space above this line. The discovery of an axion in these searches will rule out a large class of heterotic models, making such a signal challenging to explain within heterotic string theory.
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| Dokumenttyp |
article
|
| Språk |
English
|
| Information om utgivare |
SpringerOpen, 2025.
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| Ämnestermer | |
