Measurement E151M290

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:	0.0402
Q²:	0.0121 GeV²
W:	1355.0 GeV
E_beam:	1.3383 GeV
ε:	0.8877

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.65	222.0	-0.4812	0.5381	0.0423
0.65	234.0	-0.2027	0.5049	0.0325
0.65	246.0	-0.1154	0.5252	0.0308
0.75	138.0	-0.5555	0.61	0.0456
0.75	222.0	0.0162	0.6169	0.03
0.75	234.0	0.7675	0.5064	0.0562
0.75	246.0	-0.1448	0.548	0.0313
0.85	234.0	0.7078	0.545	0.0531
0.85	246.0	1.0556	0.5378	0.0719
0.55	246.0	-0.1279	0.8733	0.031
0.65	234.0	0.3224	0.7744	0.0357
0.75	234.0	1.0571	0.9757	0.0704
0.75	246.0	0.767	0.8305	0.0551
0.85	234.0	0.527	1.0304	0.0437

CLAS Physics Database