Measurement E151M1866

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:	0.1057
Q²:	0.101 GeV²
W:	1565.0 GeV
E_beam:	1.9889 GeV
ε:	0.8288

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.35	294.0	-0.7789	0.9198	0.0559
0.45	78.0	0.6855	0.8252	0.0512
0.45	126.0	-2.1826	0.7593	0.1356
0.45	282.0	0.9069	0.8135	0.0626
0.55	114.0	0.4607	0.9397	0.041
0.55	126.0	-0.3505	0.838	0.0368
0.55	270.0	-0.0209	0.9247	0.03
0.55	282.0	-1.2554	0.6696	0.0818
0.65	102.0	-1.2772	0.9427	0.083
0.65	114.0	-0.3069	0.7715	0.0353
0.65	126.0	-0.1186	0.7273	0.0308
0.65	138.0	-0.2091	0.9063	0.0326
0.65	198.0	0.1856	0.9841	0.032
0.65	222.0	1.2296	0.6615	0.0803
0.65	234.0	-0.7994	0.667	0.057
0.65	294.0	1.0084	0.7534	0.0681
0.75	114.0	-0.0425	0.7859	0.0301
0.75	126.0	0.0134	0.7532	0.03
0.75	138.0	-0.2627	0.782	0.034
0.75	150.0	-0.2235	0.8698	0.0329
0.75	210.0	0.0929	0.8026	0.0305
0.75	222.0	0.4338	0.6987	0.0399
0.75	234.0	0.3382	0.6168	0.0363
0.75	246.0	1.1462	0.7468	0.0757
0.75	282.0	-0.1209	0.6807	0.0309
0.75	294.0	-0.1857	0.8098	0.032
0.85	90.0	-0.7739	0.8379	0.0557
0.85	114.0	1.5977	0.7666	0.1014
0.85	126.0	0.163	0.9195	0.0316
0.85	210.0	-1.7257	0.702	0.1088
0.85	222.0	-1.2204	0.6323	0.0798
0.85	234.0	-0.2029	0.651	0.0324
0.85	246.0	1.1367	0.6655	0.0751
0.95	114.0	-0.7906	0.7959	0.0565
0.95	222.0	0.1717	0.6924	0.0318
0.95	234.0	1.1203	0.7073	0.0742

CLAS Physics Database