Measurement E151M1353

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:	0.041
Q²:	0.0171 GeV²
W:	1385.0 GeV
E_beam:	1.0539 GeV
ε:	0.7552

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.25	42.0	-1.4318	0.8756
0.25	54.0	-1.4512	0.9348
0.35	30.0	-0.1665	0.92
0.35	42.0	0.7404	0.6502
0.35	54.0	-0.4433	0.6158
0.45	30.0	0.1969	0.6653
0.45	42.0	0.0123	0.5712
0.45	54.0	0.1996	0.6871
0.45	66.0	1.374	0.8616
0.45	234.0	-0.7397	0.7528
0.45	246.0	0.1826	0.6784
0.55	18.0	1.3709	0.9068
0.55	30.0	0.5911	0.7113
0.55	42.0	0.2274	0.5301
0.55	54.0	1.264	0.6392
0.55	138.0	0.8372	0.9769
0.55	150.0	-0.2025	0.8679
0.55	162.0	0.4369	0.9779
0.55	222.0	-0.5011	0.7492
0.55	234.0	-0.0521	0.5574
0.55	246.0	0.2076	0.5772
0.55	258.0	0.4386	0.6287
0.65	42.0	-1.1836	0.814
0.65	54.0	-0.6697	0.7366
0.65	138.0	-1.0616	0.8031
0.65	150.0	-0.6621	0.7492
0.65	162.0	0.6747	0.7829
0.65	174.0	-1.2237	0.7915
0.65	210.0	-0.2554	0.7192
0.65	222.0	-0.5508	0.6677
0.65	234.0	-0.7809	0.4745
0.65	246.0	0.5001	0.4623
0.65	258.0	1.348	0.5692
0.65	270.0	-2.6823	2.6823
0.75	138.0	0.3792	0.801
0.75	150.0	-0.9716	0.7316
0.75	162.0	-0.5283	0.7067
0.75	174.0	0.058	0.848
0.75	210.0	0.2461	0.7436
0.75	222.0	-0.9928	0.5792
0.75	234.0	0.9842	0.5373
0.75	246.0	0.3584	0.4486
0.75	258.0	0.8935	0.571
0.75	270.0	0.3326	0.861
0.85	210.0	-1.6795	0.747
0.85	222.0	0.1994	0.5799
0.85	234.0	0.3068	0.5048
0.85	246.0	0.0329	0.4711
0.85	258.0	0.1537	0.5354
0.95	246.0	0.6879	0.7121

CLAS Physics Database