Measurement E151M678

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:	0.1066
Q²:	0.1435 GeV²
W:	1625.0 GeV
E_beam:	1.9889 GeV
ε:	0.7644

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.45	270.0	0.9503	0.7788	0.0654
0.55	126.0	0.4717	0.8316	0.0416
0.55	270.0	-0.483	0.748	0.0421
0.65	114.0	-0.5686	0.6847	0.0459
0.65	222.0	1.8632	0.7602	0.1178
0.65	294.0	1.1857	0.7307	0.0785
0.75	126.0	0.485	0.8191	0.0422
0.75	210.0	-0.1473	0.7218	0.0313
0.75	222.0	0.2275	0.8027	0.0331
0.75	234.0	1.1798	0.6818	0.0781
0.85	90.0	0.2022	0.7574	0.0324
0.85	114.0	-0.1622	0.736	0.0316
0.85	210.0	0.1704	0.738	0.0318
0.85	222.0	0.2673	0.7929	0.0342
0.85	234.0	1.3992	0.8516	0.0907
0.85	258.0	-0.0692	0.7798	0.0303

CLAS Physics Database