Measurement E151M688

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:	0.0516
Q²:	0.0707 GeV²
W:	1655.0 GeV
E_beam:	1.9889 GeV
ε:	0.7705

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.35	78.0	0.318	0.7502	0.0358
0.45	270.0	-0.636	0.6157	0.0491
0.45	282.0	-0.4032	0.5893	0.0388
0.55	222.0	1.1532	0.7426	0.0766
0.65	126.0	0.1199	0.7141	0.0309
0.65	138.0	-0.8561	0.6109	0.0603
0.65	210.0	-0.3098	0.6722	0.0355
0.65	222.0	0.822	0.7202	0.0585
0.65	282.0	1.0872	0.5944	0.073
0.75	66.0	-0.4482	0.6777	0.0406
0.75	114.0	-0.7193	0.6491	0.0532
0.75	198.0	0.9141	0.7969	0.0634
0.75	210.0	0.1338	0.5709	0.0311
0.75	222.0	0.6271	0.7372	0.0487
0.75	270.0	2.1109	2.1109	0.1325
0.75	282.0	-0.412	0.5392	0.0392
0.75	294.0	0.6204	0.723	0.0484
0.85	114.0	0.023	0.5975	0.03
0.85	126.0	0.4941	0.5834	0.0426
0.85	198.0	1.0517	0.7494	0.071
0.85	210.0	0.8615	0.6414	0.0606
0.85	222.0	-0.1944	0.6733	0.0323
0.85	234.0	-0.0278	0.563	0.03

CLAS Physics Database