Measurement E151M1922

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:	0.0383
Q²:	0.0593 GeV²
W:	1685.0 GeV
E_beam:	1.9889 GeV
ε:	0.7478

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.45	78.0	0.2299	0.7379	0.0331
0.45	270.0	-0.454	0.5885	0.0407
0.45	282.0	0.5442	0.6893	0.0446
0.55	114.0	-0.9651	0.6834	0.0657
0.55	126.0	-0.9323	0.6283	0.064
0.55	198.0	0.5093	0.7116	0.043
0.55	222.0	-1.6726	0.6541	0.1057
0.65	114.0	-0.1612	0.7753	0.0315
0.65	138.0	0.2145	0.6913	0.0327
0.65	210.0	0.1421	0.6903	0.0312
0.65	222.0	-1.6256	0.561	0.103
0.65	294.0	-0.8735	0.6759	0.0608
0.75	66.0	-0.5572	0.737	0.0452
0.75	198.0	-0.3151	0.6462	0.0356
0.75	210.0	-0.1395	0.6664	0.0312
0.75	222.0	-0.8972	0.6511	0.0621
0.75	234.0	0.661	0.713	0.05
0.75	270.0	1.2169	0.5827	0.0796
0.75	282.0	0.4038	0.5398	0.0387
0.75	294.0	-0.5698	0.7358	0.0457
0.85	102.0	-0.1285	0.7192	0.031
0.85	114.0	1.7738	0.5788	0.1116
0.85	126.0	-0.4232	0.7012	0.0395
0.85	198.0	-0.7389	0.7149	0.0539
0.85	210.0	-0.0115	0.656	0.03
0.85	222.0	-1.1936	0.5674	0.0783

CLAS Physics Database