Measurement E151M501

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:	0.1708
Q²:	0.0348 GeV²
W:	1295.0 GeV
E_beam:	1.9889 GeV
ε:	0.9637

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.35	306.0	-0.2003	0.5888	0.0324
0.45	66.0	1.2772	0.612	0.0837
0.45	78.0	-0.5376	0.5131	0.0445
0.55	78.0	0.5882	0.5296	0.0468
0.55	90.0	-0.1627	0.5023	0.0316
0.65	78.0	-0.3908	0.5504	0.0384
0.65	90.0	-0.2516	0.5058	0.0337
0.65	246.0	0.6308	0.5282	0.0489
0.65	258.0	0.4069	0.4241	0.039
0.65	270.0	-0.3531	0.4784	0.037
0.75	114.0	0.9132	0.6177	0.0634
0.75	126.0	-0.1107	0.5408	0.0308
0.75	138.0	-0.217	0.544	0.0328
0.75	150.0	0.3039	0.6205	0.0353
0.75	234.0	-0.0366	0.4903	0.0301
0.75	246.0	-0.3106	0.3859	0.0355
0.75	258.0	0.153	0.3668	0.0314
0.75	270.0	-0.5448	0.4005	0.0448
0.85	126.0	0.5501	0.5942	0.0451
0.85	138.0	-0.8877	0.5048	0.062
0.85	150.0	-0.1277	0.5557	0.031
0.85	222.0	0.1115	0.5611	0.0308
0.85	234.0	0.8676	0.5135	0.061
0.85	246.0	-0.3406	0.4068	0.0365
0.85	258.0	0.8654	0.4428	0.0608

CLAS Physics Database