Measurement E151M660

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_UL
ε_L:	0.0922
Q²:	0.101 GeV²
W:	1595.0 GeV
E_beam:	1.9889 GeV
ε:	0.8071

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.35	270.0	1.3871	0.7968	0.09
0.65	114.0	0.3399	0.7906	0.0365
0.65	126.0	0.534	0.773	0.0444
0.65	138.0	-0.2619	0.7746	0.034
0.65	210.0	1.4958	0.7904	0.0963
0.65	222.0	0.3581	0.7504	0.0371
0.65	282.0	-0.3717	0.7228	0.0376
0.65	294.0	0.8715	0.8788	0.0612
0.75	114.0	-1.3285	0.6108	0.0866
0.75	126.0	-1.0322	0.6742	0.0699
0.75	138.0	-0.2041	0.7664	0.0325
0.75	210.0	0.3682	0.7637	0.0375
0.75	222.0	0.7879	0.7509	0.0568
0.75	234.0	-0.5062	0.6743	0.0431
0.75	282.0	0.7159	0.689	0.0531
0.75	294.0	1.9929	0.6836	0.1255
0.85	102.0	-0.0931	0.6615	0.0305
0.85	114.0	0.0364	0.731	0.0301
0.85	210.0	-0.1968	0.5933	0.0323
0.85	222.0	1.0333	0.6952	0.07
0.85	234.0	-0.5274	0.5255	0.0441
0.85	246.0	0.9968	0.6551	0.0679
0.95	126.0	-1.9474	0.3924	0.1228
0.95	234.0	-0.2477	0.6437	0.0336
0.95	246.0	-1.1431	0.5129	0.0761

CLAS Physics Database