In this chiral U(1)_{B-L} axion model, demanding high axion quality forces a minimal axion-electron coupling that can exceed standard KSVZ-model predictions.
The field range and decay constantF a of the axion are a≡F aθa∈ 0, 2πv1v2p m2v2 1 +n 2v2 2 # ,(7) Fa = v1v2p m2v2 1 +n 2v2 2
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A quality-coupling relation in chiral $U(1)_{B-L}$ axion model
In this chiral U(1)_{B-L} axion model, demanding high axion quality forces a minimal axion-electron coupling that can exceed standard KSVZ-model predictions.