Measurement E151M1382

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:	0.1275
Q²:	0.0844 GeV²
W:	1415.0 GeV
E_beam:	1.0539 GeV
ε:	0.6236

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.15	42.0	0.6036	0.9706
0.35	54.0	0.0982	0.9941
0.55	234.0	0.1005	0.9072
0.55	246.0	-0.4595	0.7706
0.55	258.0	-0.6912	0.7193
0.65	138.0	2.2647	0.9134
0.65	234.0	-0.847	0.9389
0.65	246.0	0.7096	0.8192
0.65	258.0	-0.835	0.765
0.65	270.0	-0.5099	0.7675
0.75	150.0	0.3913	0.9464
0.75	234.0	0.6017	0.7782
0.75	246.0	-0.6055	0.6555
0.75	258.0	0.5171	0.67
0.75	270.0	-0.0631	0.7303
0.85	234.0	-0.1223	0.8446
0.85	246.0	1.597	0.5304
0.85	258.0	-0.0824	0.6632
0.85	270.0	-0.1405	0.673
0.85	282.0	-0.8673	0.7398
0.95	258.0	-1.1403	0.6431

CLAS Physics Database