Measurement E151M1886

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:	0.1577
Q²:	0.205 GeV²
W:	1595.0 GeV
E_beam:	1.9889 GeV
ε:	0.7628

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.65	114.0	0.8841	0.9431	0.0614
0.65	222.0	-0.219	0.9328	0.0328
0.75	114.0	-0.9523	0.8313	0.065
0.75	138.0	0.8194	0.9995	0.058
0.75	210.0	1.494	0.8713	0.0954
0.75	222.0	1.4291	0.7831	0.0916
0.75	234.0	-0.3102	0.9341	0.0354
0.75	246.0	-0.6064	0.8918	0.0474
0.85	78.0	-0.4728	0.9926	0.0415
0.85	222.0	-0.291	0.8393	0.0348
0.85	234.0	-0.413	0.7803	0.0391
0.85	246.0	-0.1813	0.8844	0.0319
0.85	258.0	1.0309	0.8876	0.0693
0.95	246.0	1.3272	0.6669	0.0858
0.95	258.0	0.3981	0.7573	0.0385
0.95	270.0	0.8543	0.7004	0.0598

CLAS Physics Database