Measurement E151M1646

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:	0.0154
Q²:	0.0171 GeV²
W:	1565.0 GeV
E_beam:	1.3383 GeV
ε:	0.642

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.45	30.0	0.0851	0.8822	0.0304
0.45	42.0	-1.4365	0.6737	0.1036
0.55	42.0	-0.1469	0.9151	0.0313
0.55	162.0	-0.7624	1.01	0.0547
0.65	222.0	-0.0532	0.9879	0.0302
0.65	234.0	-1.8599	0.7798	0.1154
0.75	222.0	-2.6696	2.6696	0.1628
0.75	234.0	-0.4826	0.8726	0.0417
0.75	246.0	-1.4128	0.8702	0.0898
0.85	138.0	-1.3503	0.7483	0.0863
0.85	234.0	0.0272	0.894	0.03
0.55	222.0	0.082	1.2548	0.0304
0.55	234.0	-2.0673	1.0625	0.1239
0.65	138.0	-2.2217	0.8813	0.1326
0.65	150.0	-0.3735	1.3134	0.037
0.65	210.0	0.2823	1.1604	0.0342
0.65	222.0	-1.5017	1.0205	0.0923
0.65	234.0	0.9508	1.1457	0.0629
0.75	210.0	-0.4598	1.191	0.0402
0.75	222.0	-0.2978	1.0538	0.0346
0.75	234.0	-0.0565	1.1928	0.0302
0.75	246.0	0.0762	1.4317	0.0303
0.85	138.0	-0.8568	1.0703	0.0582
0.85	210.0	-0.9783	1.0975	0.0643
0.85	222.0	0.4352	1.0098	0.0392
0.85	234.0	0.5549	0.9965	0.0441

CLAS Physics Database