Measurement E151M1799

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:	0.0617
Q²:	0.0291 GeV²
W:	1445.0 GeV
E_beam:	1.9889 GeV
ε:	0.9192

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.35	66.0	-0.2589	0.8696	0.0339
0.35	78.0	0.007	0.9045	0.03
0.45	78.0	-0.7928	0.8092	0.0566
0.45	90.0	-0.3809	0.8337	0.0379
0.45	282.0	-0.172	0.8514	0.0318
0.45	294.0	1.3152	0.7488	0.0852
0.55	90.0	1.4101	0.7278	0.0906
0.65	114.0	0.1451	0.8207	0.0313
0.65	138.0	0.029	0.8807	0.0301
0.65	150.0	-1.2064	0.7977	0.079
0.65	222.0	0.3816	0.7849	0.0379
0.65	234.0	0.4183	0.7091	0.0393
0.65	246.0	-0.4192	0.7846	0.0393
0.75	114.0	-0.4734	0.8516	0.0415
0.75	126.0	1.2093	0.7362	0.0792
0.75	138.0	0.0191	0.8419	0.03
0.75	150.0	0.2536	0.873	0.0337
0.75	222.0	0.2036	0.7617	0.0324
0.75	234.0	-1.0771	0.5436	0.0718
0.75	246.0	-0.5546	0.6782	0.045
0.85	222.0	-0.142	0.6904	0.0312
0.85	234.0	0.0734	0.6934	0.0303
0.85	246.0	-0.5818	0.7459	0.0463

CLAS Physics Database