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We have measured beam-spin asymmetries to extract the $\sin\phi$ moment$A_{LU}^{\sin\phi}$ from the hard exclusive $\vec{e} p \to e^\prime n \pi^+$reaction above the resonance region, for the first time with nearly fullcoverage from forward to backward angles in the center-of-mass. The$A_{LU}^{\sin\phi}$ moment has been measured up to 6.6 GeV$^{2}$ in $-t$,covering the kinematic regimes of Generalized Parton Distributions (GPD) andbaryon-to-meson Transition Distribution Amplitudes (TDA) at the same time. Theexperimental results in very forward kinematics demonstrate the sensitivity tochiral-odd and chiral-even GPDs. In very backward kinematics where the TDAframework is applicable, we found $A_{LU}^{\sin\phi}$ to be negative, while asign change was observed near 90$^\circ$ in the center-of-mass. The uniqueresults presented in this paper will provide critical constraints to establishreaction mechanisms that can help to further develop the GPD and TDAframeworks.

Extraction of beam-spin asymmetries from the hard exclusive $\pi^{+}$ channel off protons in a wide range of kinematics