Measurement E151M1284

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_LL
ε_L:	0.0337
Q²:	0.0071 GeV²
W:	1295.0 GeV
E_beam:	1.0539 GeV
ε:	0.8735

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.55	234.0	-0.4531	0.7722	0.0593
0.55	246.0	-0.6294	0.7139	0.0771
0.55	258.0	-0.2657	0.7204	0.0424
0.65	222.0	-0.3298	0.7557	0.0478
0.65	234.0	-0.0927	0.5799	0.0318
0.65	246.0	-1.0216	0.5876	0.1191
0.65	258.0	0.9771	0.572	0.1142
0.75	162.0	0.2878	0.7712	0.0442
0.75	234.0	0.9495	0.6073	0.1112
0.75	246.0	0.2941	0.6198	0.0447
0.75	258.0	-1.3956	0.6033	0.1602
0.85	222.0	0.6985	0.7425	0.0843
0.85	234.0	-0.8173	0.6249	0.0969
0.85	246.0	-0.6714	0.6809	0.0815
0.85	258.0	0.489	0.5688	0.0628

CLAS Physics Database