Measurement E151M1778

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:	0.4157
Q²:	0.205 GeV²
W:	1385.0 GeV
E_beam:	1.9889 GeV
ε:	0.8894

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.25	66.0	0.5675	0.7908
0.35	66.0	0.0317	0.7762
0.35	78.0	-0.3943	0.8128
0.65	90.0	-0.394	0.7384
0.65	102.0	-0.2546	0.5756
0.65	114.0	1.2287	0.7382
0.65	258.0	-0.1853	0.7703
0.65	270.0	-0.5757	0.7383
0.75	90.0	1.7711	0.5959
0.75	102.0	0.6774	0.5858
0.75	114.0	-0.5166	0.6168
0.75	126.0	0.9736	0.6425
0.75	234.0	1.5302	0.6065
0.75	246.0	0.0049	0.6254
0.75	258.0	0.3975	0.6034
0.75	270.0	1.2308	0.558
0.75	282.0	0.8528	0.7353
0.85	90.0	-0.5438	0.7116
0.85	102.0	0.3098	0.5835
0.85	114.0	0.823	0.646
0.85	126.0	-0.0095	0.693
0.85	138.0	1.2082	0.824
0.85	222.0	0.1696	0.7301
0.85	234.0	0.6187	0.7446
0.85	246.0	0.9756	0.5567
0.85	258.0	-0.7893	0.5664
0.85	270.0	-0.1545	0.57
0.85	282.0	-0.9353	0.5692
0.95	66.0	0.7038	0.7241
0.95	102.0	0.2605	0.6785
0.95	126.0	-0.1127	0.7196
0.95	138.0	-0.3549	0.6946
0.95	222.0	0.8798	0.6278
0.95	234.0	1.1589	0.6493
0.95	246.0	0.9723	0.5307
0.95	258.0	0.8433	0.4718
0.95	270.0	0.3033	0.4815
0.95	282.0	0.4194	0.5121
0.95	294.0	-0.0862	0.629

CLAS Physics Database