Measurement E151M1552

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:	0.0328
Q²:	0.0143 GeV²
W:	1415.0 GeV
E_beam:	1.3383 GeV
ε:	0.8369

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.55	42.0	-0.1043	0.8106
0.55	126.0	0.0685	0.8052
0.55	138.0	-0.3866	0.936
0.55	222.0	0.0013	0.8521
0.55	234.0	-0.5768	0.7286
0.55	246.0	0.2849	0.7213
0.65	126.0	0.3108	0.7653
0.65	138.0	-1.6341	0.6525
0.65	210.0	0.0346	0.7157
0.65	222.0	-0.02	0.6155
0.65	234.0	-0.4839	0.6236
0.65	246.0	0.728	0.716
0.75	126.0	0.2493	0.8353
0.75	138.0	-0.6191	0.7867
0.75	150.0	-0.4779	0.8153
0.75	222.0	0.5423	0.6589
0.75	234.0	0.4998	0.607
0.75	246.0	0.5069	0.6976
0.85	126.0	1.2319	0.8233
0.85	138.0	-0.2094	0.7068
0.85	222.0	0.6791	0.6548
0.85	234.0	-1.6509	0.602
0.85	246.0	-0.2551	0.7305
0.45	42.0	-1.2001	0.8876
0.45	54.0	0.599	1.2702
0.55	30.0	-1.2242	1.1088
0.55	138.0	1.0169	1.0915
0.55	222.0	-0.6706	0.8003
0.55	234.0	0.3414	0.9336
0.55	246.0	-0.146	0.8644
0.65	126.0	-0.2884	1.1571
0.65	138.0	-1.353	0.8902
0.65	150.0	-2.0243	0.8352
0.65	198.0	-1.4236	1.1559
0.65	210.0	1.3459	0.7359
0.65	222.0	-0.708	0.9323
0.65	234.0	1.6235	0.47
0.65	246.0	-0.0317	1.0418
0.75	138.0	2.3918	0.569
0.75	150.0	0.9986	1.1221
0.75	210.0	1.6244	0.7543
0.75	222.0	0.2081	0.7997
0.75	234.0	-0.8903	0.7198
0.75	246.0	0.4224	1.3121
0.85	210.0	-0.6384	1.0789
0.85	222.0	1.8771	0.4323
0.85	234.0	-0.7465	0.661
0.85	246.0	0.2798	0.8046
0.85	258.0	-1.3545	0.8396

CLAS Physics Database