TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhysProc.8.066
TI  - Hard exclusive $\pi^{+}n$ electro production beam spin asymmetries off the proton in the GPD and TDA regimes
PY  - 2022/07/12
UR  - https://scipost.org/SciPostPhysProc.8.066
JF  - SciPost Physics Proceedings
JA  - SciPost Phys. Proc.
VL  - 
IS  - 8
SP  - 066
A1  - Diehl, Stefan
AB  - Hard exclusive $\pi^{+}$n electro-production can be used to gain access to the 3D nucleon structure. The QCD factorisation mechanism in the "nearly forward region" ($t/Q^{2}$ small) allows a description by Generalized Parton Distributions (GPDs), while for the "nearly backward" kinematic region ($u/Q^{2}$ small) a description based on nucleon to pion transitions (TDAs) is available. The paper presents a measurement of single beam spin asymmetries to extract the $A^{\sin\phi}_{LU}$ moments and the related cross section ratio $\sigma_{LT^\prime}/\sigma_{0}$ from the hard exclusive $\pi^{+}$ channel off the unpolarized hydrogen target in a wide range of kinematics based on data taken with the CLAS spectrometer at Jefferson Lab. In addition, under forward angles a detailed multidimensional study will be presented based on CLAS12 data and compared to theoretical predictions.
ER  -

@Article{10.21468/SciPostPhysProc.8.066,
	title={{Hard exclusive $\pi^{+}n$ electro production beam spin asymmetries off the proton in the GPD and TDA regimes}},
	author={S. Diehl for the CLAS collaboration},
	journal={SciPost Phys. Proc.},
	pages={066},
	year={2022},
	publisher={SciPost},
	doi={10.21468/SciPostPhysProc.8.066},
	url={https://scipost.org/10.21468/SciPostPhysProc.8.066},
}