Measurement E151M1698

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:	0.4706
Q²:	0.0707 GeV²
W:	1235.0 GeV
E_beam:	1.9889 GeV
ε:	0.9671

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.35	78.0	-0.602	0.615
0.45	78.0	-0.2939	0.4801
0.55	78.0	-0.1127	0.4655
0.55	90.0	-0.254	0.4253
0.55	270.0	0.1437	0.5173
0.55	282.0	0.4988	0.5568
0.65	78.0	1.498	0.4174
0.65	90.0	-0.4253	0.4921
0.65	258.0	-0.1054	0.4377
0.65	270.0	-0.2834	0.3693
0.65	282.0	-0.585	0.4849
0.75	90.0	0.3561	0.6241
0.75	102.0	-0.143	0.668
0.75	114.0	0.9714	0.5132
0.75	126.0	-0.0963	0.6871
0.75	246.0	0.8489	0.4931
0.75	258.0	0.0675	0.3872
0.75	270.0	-0.4685	0.3591
0.85	102.0	-0.8105	0.5352
0.85	114.0	-0.5381	0.4166
0.85	126.0	0.3301	0.3866
0.85	138.0	-0.0075	0.3747
0.85	150.0	0.2802	0.4746
0.85	162.0	0.8512	0.4852
0.85	174.0	0.2888	0.5767
0.85	210.0	-0.4528	0.5931
0.85	222.0	0.7577	0.6467
0.85	246.0	-0.8565	0.4391
0.85	258.0	-0.4837	0.4057
0.85	270.0	0.7985	0.5611
0.95	114.0	0.5541	0.523
0.95	126.0	0.4755	0.4159
0.95	138.0	0.4447	0.4633
0.95	150.0	-0.0351	0.3791
0.95	162.0	-0.7052	0.3614
0.95	174.0	-0.6661	0.4838
0.95	186.0	0.0628	0.4477
0.95	198.0	-0.5577	0.4718
0.95	210.0	0.5102	0.5638
0.95	234.0	0.1077	0.5533

CLAS Physics Database