Measurement E151M1369

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:	0.0168
Q²:	0.0084 GeV²
W:	1415.0 GeV
E_beam:	1.0539 GeV
ε:	0.7185

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.35	30.0	-0.9867	0.8985	0.1153
0.35	42.0	0.6559	0.8672	0.0798
0.35	54.0	-0.3052	0.9419	0.0457
0.45	30.0	-0.9844	0.9502	0.115
0.45	42.0	-0.5901	0.6741	0.073
0.45	54.0	0.1393	0.7747	0.0339
0.45	222.0	0.4611	0.8659	0.06
0.45	234.0	-1.4993	0.7731	0.1717
0.55	18.0	-0.1019	0.8503	0.0321
0.55	30.0	0.3623	0.8039	0.0507
0.55	42.0	0.5522	0.6127	0.0691
0.55	54.0	-0.5126	0.6501	0.0651
0.55	150.0	0.2622	0.9879	0.0421
0.55	162.0	-0.9681	0.8333	0.1132
0.55	174.0	-1.5244	0.9752	0.1745
0.55	222.0	0.2379	0.8193	0.0402
0.55	234.0	0.753	0.7251	0.0901
0.55	246.0	-1.1434	0.7708	0.1324
0.65	42.0	-0.6555	0.8098	0.0798
0.65	54.0	-0.5089	0.8739	0.0648
0.65	150.0	-1.1087	0.793	0.1286
0.65	162.0	-0.7132	0.7832	0.0858
0.65	210.0	0.394	0.8543	0.0536
0.65	222.0	-1.1219	0.6385	0.13
0.65	234.0	-0.1065	0.6144	0.0323
0.65	246.0	1.3085	0.5943	0.1506
0.75	222.0	0.6048	0.6773	0.0745
0.75	234.0	0.8131	0.7473	0.0965
0.75	246.0	0.507	0.7467	0.0646
0.75	258.0	-0.1299	0.8911	0.0334
0.85	210.0	-0.0936	0.8386	0.0318
0.85	222.0	-0.7398	0.7247	0.0887
0.85	234.0	0.2546	0.6278	0.0415
0.85	246.0	-0.5973	0.7286	0.0737

CLAS Physics Database