Measurement E151M620

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:	0.2903
Q²:	0.2915 GeV²
W:	1505.0 GeV
E_beam:	1.9889 GeV
ε:	0.7946

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.45	282.0	1.4762	0.6888	0.0951
0.65	102.0	-0.7817	0.6099	0.0564
0.65	222.0	0.6225	0.7201	0.0485
0.65	234.0	-0.061	0.6207	0.0302
0.75	102.0	-0.2533	0.5903	0.0338
0.75	114.0	-0.3799	0.6575	0.0379
0.75	234.0	-0.3073	0.5785	0.0354
0.75	246.0	0.2553	0.6789	0.0338
0.75	258.0	-0.1199	0.5835	0.0309
0.85	114.0	-0.7997	0.5903	0.0574
0.85	234.0	0.5957	0.7038	0.0472
0.85	246.0	0.6558	0.6211	0.0501
0.85	270.0	0.7093	0.6157	0.0527
0.95	210.0	0.1508	0.6308	0.0314
0.95	258.0	1.1257	0.6521	0.0751
0.95	270.0	-0.0376	0.5635	0.0301
0.95	282.0	0.9657	0.5445	0.0662
0.95	294.0	-0.4138	0.5262	0.0393

CLAS Physics Database