Measurement E151M2367

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:	0.2145
Q²:	0.496 GeV²
W:	1715.0 GeV
E_beam:	2.999 GeV
ε:	0.8027

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.75	78.0	1.5898	0.9618	0.1191
0.85	66.0	2.4102	0.7308	0.1773
0.85	78.0	1.2835	0.8022	0.0978
0.85	222.0	-0.5261	0.9901	0.0485
0.85	246.0	-0.9775	0.8896	0.077
0.95	198.0	-0.5912	0.8339	0.0523
0.95	210.0	-0.1603	1.0186	0.0322
0.95	222.0	-0.242	0.8145	0.0348
0.95	246.0	1.0252	0.7647	0.0802
0.95	258.0	0.114	0.8397	0.0311
0.95	270.0	1.0379	0.9169	0.081
0.95	282.0	-1.5217	0.8148	0.1143
0.95	294.0	-1.0914	0.7372	0.0846

CLAS Physics Database