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
0.35	78.0	0.0523	0.7923
0.35	282.0	-0.159	0.7163
0.45	66.0	-0.7645	0.9373
0.45	78.0	0.6233	0.7099
0.45	90.0	-0.0331	0.7993
0.45	126.0	1.4229	0.8357
0.45	270.0	-0.1294	0.7252
0.45	282.0	0.3379	0.8873
0.55	78.0	-1.1485	0.7607
0.55	90.0	-0.3526	0.8711
0.55	114.0	0.3006	0.793
0.55	126.0	-1.575	0.8525
0.55	222.0	-0.4912	0.7904
0.55	270.0	-0.0103	0.6213
0.55	282.0	-1.9161	0.6654
0.65	114.0	1.7629	0.7225
0.65	126.0	0.8757	0.7194
0.65	138.0	-1.2039	0.7285
0.65	150.0	1.1289	0.7618
0.65	198.0	-1.5036	0.7302
0.65	210.0	-0.9657	0.8623
0.65	222.0	0.0514	0.7598
0.75	126.0	-0.2314	0.8044
0.75	138.0	0.7455	0.837
0.75	150.0	-0.0025	0.9252
0.75	210.0	-1.4794	0.7559
0.75	222.0	-0.0922	0.7319
0.75	234.0	0.561	0.6576
0.75	270.0	0.2774	0.9238
0.75	282.0	1.165	0.7685
0.85	198.0	-1.3276	0.8441
0.85	210.0	-0.6365	0.7818
0.85	222.0	-0.1001	0.6761
0.85	234.0	-0.9074	0.635
0.85	246.0	-0.0713	0.8708

CLAS Physics Database