Measurement E151M669

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_UL
ε_L:	0.0261
Q²:	0.0291 GeV²
W:	1625.0 GeV
E_beam:	1.9889 GeV
ε:	0.8139

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty
0.35	78.0	0.6224	0.8082
0.45	78.0	-0.271	0.7485
0.45	90.0	2.9673	2.9673
0.45	138.0	-0.6282	0.7229
0.45	270.0	1.0059	0.7669
0.45	282.0	0.6466	0.8145
0.55	78.0	0.0885	0.7121
0.55	198.0	1.9873	0.9016
0.55	210.0	-0.8554	0.5688
0.55	270.0	0.1289	0.5919
0.55	282.0	-0.4877	0.6742
0.65	126.0	0.1228	0.6894
0.65	138.0	-0.7638	0.581
0.65	150.0	-1.025	0.6923
0.65	210.0	1.193	0.8397
0.65	222.0	-0.5979	0.6252
0.65	282.0	-0.0732	0.6954
0.75	66.0	0.3182	0.7542
0.75	78.0	0.6543	0.7826
0.75	210.0	0.7046	0.6521
0.75	222.0	0.7236	0.6432
0.75	270.0	-0.5428	0.5243
0.75	282.0	-0.3812	0.5712
0.75	294.0	1.2115	0.7895
0.85	114.0	0.3712	0.6983
0.85	126.0	-0.0519	0.5416
0.85	138.0	-1.1515	0.5581
0.85	198.0	2.2808	0.6878
0.85	210.0	-0.0942	0.6266
0.85	222.0	-0.3128	0.5911

CLAS Physics Database