Measurement E151M1970

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:	0.869
Q²:	0.2445 GeV²
W:	1265.0 GeV
E_beam:	2.2596 GeV
ε:	0.9385

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.55	282.0	0.0702	1.9407	0.0307
0.65	282.0	-0.3062	1.8987	0.0411
0.75	90.0	-1.0102	2.3502	0.0976
0.75	102.0	0.0064	2.2534	0.03
0.75	270.0	-1.1284	1.9569	0.108
0.75	282.0	-1.2215	1.7605	0.1162
0.75	294.0	2.5415	1.9934	0.2355
0.85	270.0	2.374	2.0261	0.2202
0.85	282.0	-3.7507	1.8364	0.346
0.85	294.0	2.045	1.7296	0.1903
0.95	78.0	0.5667	6.6573	0.0601
0.95	102.0	6.3933	1.0933	-0.1273
0.25	66.0	0.1853	0.5238	0.0323
0.65	270.0	0.3777	0.5143	0.0388
0.65	282.0	-0.2837	0.4899	0.0352
0.75	78.0	-0.617	0.5036	0.0501
0.75	90.0	0.4284	0.528	0.0409
0.75	270.0	0.3854	0.4895	0.0391
0.75	282.0	-0.2643	0.5052	0.0346
0.85	78.0	0.9227	0.5647	0.0671
0.85	90.0	0.4033	0.5067	0.0399
0.85	102.0	-0.2302	0.5991	0.0335
0.85	114.0	-0.0362	0.662	0.0301
0.85	246.0	0.5567	0.5464	0.047
0.85	258.0	0.2695	0.6093	0.0347
0.85	282.0	1.3432	0.4628	0.0924
0.95	270.0	1.7728	0.9122	0.1192

CLAS Physics Database