Measurement E151M1899

Experiment:	EG4
Year:	2016	Experiment comment: Final asymmetry results for the ep-> e pi+ (n) channel extracted from CLAS/EG4 data obtained using a longitudinally polarized beam and a longitudinally polarized NH3 target (CAA HS07-02).
Spokesperson:	Xiaochao Zheng
Reaction:	ep → π⁺n
Polarization:	beam (longitudinal), target (longitudinal)
Quantity:	A_LL
ε_L:	0.0929
Q²:	0.1205 GeV²
W:	1625.0 GeV
E_beam:	1.9889 GeV
ε:	0.7746

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.65	126.0	1.2919	0.7737
0.65	234.0	-0.7902	0.822
0.65	294.0	0.8711	0.7825
0.75	222.0	-1.0691	0.7342
0.75	234.0	-0.8019	0.7885
0.85	102.0	-0.3455	0.8047
0.85	114.0	1.1387	0.8518
0.85	210.0	-1.3411	0.811
0.85	222.0	-0.5493	0.813
0.85	234.0	0.0333	0.9295
0.95	114.0	-0.375	0.8301
0.95	246.0	0.4707	0.802

CLAS Physics Database