Measurement E151M1844

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:	0.0397
Q²:	0.0291 GeV²
W:	1535.0 GeV
E_beam:	1.9889 GeV
ε:	0.875

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.35	78.0	0.0523	0.7923	0.0302
0.35	282.0	-0.159	0.7163	0.0315
0.45	66.0	-0.7645	0.9373	0.0552
0.45	78.0	0.6233	0.7099	0.0482
0.45	90.0	-0.0331	0.7993	0.0301
0.45	126.0	1.4229	0.8357	0.0913
0.45	270.0	-0.1294	0.7252	0.031
0.45	282.0	0.3379	0.8873	0.0363
0.55	78.0	-1.1485	0.7607	0.0758
0.55	90.0	-0.3526	0.8711	0.0368
0.55	114.0	0.3006	0.793	0.0351
0.55	126.0	-1.575	0.8525	0.1
0.55	222.0	-0.4912	0.7904	0.0423
0.55	270.0	-0.0103	0.6213	0.03
0.55	282.0	-1.9161	0.6654	0.1199
0.65	114.0	1.7629	0.7225	0.111
0.65	126.0	0.8757	0.7194	0.061
0.65	138.0	-1.2039	0.7285	0.0789
0.65	150.0	1.1289	0.7618	0.0747
0.65	198.0	-1.5036	0.7302	0.0959
0.65	210.0	-0.9657	0.8623	0.0658
0.65	222.0	0.0514	0.7598	0.0302
0.75	126.0	-0.2314	0.8044	0.0331
0.75	138.0	0.7455	0.837	0.0542
0.75	150.0	-0.0025	0.9252	0.03
0.75	210.0	-1.4794	0.7559	0.0945
0.75	222.0	-0.0922	0.7319	0.0305
0.75	234.0	0.561	0.6576	0.0453
0.75	270.0	0.2774	0.9238	0.0344
0.75	282.0	1.165	0.7685	0.0767
0.85	198.0	-1.3276	0.8441	0.0859
0.85	210.0	-0.6365	0.7818	0.0489
0.85	222.0	-0.1001	0.6761	0.0306
0.85	234.0	-0.9074	0.635	0.0626
0.85	246.0	-0.0713	0.8708	0.0303

CLAS Physics Database