Measurement E151M1912

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:	0.0701
Q²:	0.101 GeV²
W:	1655.0 GeV
E_beam:	1.9889 GeV
ε:	0.7568

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.55	222.0	-1.0036	0.7895
0.65	126.0	0.2264	0.8048
0.65	138.0	-0.5803	0.8528
0.65	222.0	0.6295	0.7578
0.65	294.0	1.4102	0.6101
0.75	66.0	0.3013	0.8328
0.75	138.0	-0.0402	0.8623
0.75	198.0	0.5983	0.8144
0.75	210.0	0.2182	0.8556
0.75	222.0	0.7568	0.7523
0.75	234.0	-0.4231	0.6619
0.75	282.0	-0.7252	0.7247
0.85	102.0	0.5121	0.7904
0.85	234.0	-1.3208	0.6137
0.95	234.0	-1.5116	0.5396

CLAS Physics Database