Measurement E151M1364

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:	0.1998
Q²:	0.1205 GeV²
W:	1385.0 GeV
E_beam:	1.0539 GeV
ε:	0.6317

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.55	246.0	-0.1224	0.9008	0.033
0.55	258.0	0.3432	0.8238	0.049
0.65	234.0	1.818	0.7806	0.2072
0.65	246.0	0.7124	0.7604	0.0858
0.65	258.0	-0.674	0.7682	0.0817
0.65	270.0	0.6125	0.8133	0.0753
0.75	138.0	0.0748	0.9899	0.0312
0.75	174.0	-0.7955	0.9253	0.0946
0.75	222.0	2.7831	2.7831	0.3153
0.75	246.0	0.7343	0.6727	0.0881
0.75	258.0	0.7828	0.8298	0.0932
0.75	270.0	-0.4516	0.6768	0.0591
0.75	282.0	1.2838	0.8098	0.1479
0.85	138.0	-0.883	1.0132	0.104
0.85	234.0	1.0187	0.9151	0.1187
0.85	246.0	-0.6837	0.751	0.0827
0.85	258.0	-0.54	0.6201	0.0679
0.85	270.0	0.449	0.5908	0.0589
0.85	282.0	-0.6252	0.7951	0.0766
0.95	258.0	0.0884	0.7245	0.0316

CLAS Physics Database