Measurement E151M2267

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:	0.5147
Q²:	0.5925 GeV²
W:	1475.0 GeV
E_beam:	2.999 GeV
ε:	0.879

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.25	294.0	-0.9743	0.8855
0.45	102.0	0.1063	1.0021
0.55	78.0	-0.4488	0.8567
0.55	90.0	-0.4014	0.8838
0.55	102.0	0.7361	0.8354
0.65	78.0	1.0969	0.8487
0.65	90.0	1.0164	0.8787
0.65	102.0	1.0015	0.91
0.65	258.0	0.7631	0.8834
0.75	54.0	-0.527	0.8817
0.75	90.0	-0.1584	0.8024
0.75	102.0	0.5269	0.9553
0.75	114.0	-0.2938	0.9321
0.75	234.0	-1.0889	0.9457
0.75	246.0	-0.0678	0.8579
0.75	258.0	1.3708	0.7791
0.75	282.0	1.439	0.7316
0.85	54.0	0.8812	0.8175
0.85	114.0	0.1072	0.9534
0.85	210.0	2.3914	0.7212
0.85	222.0	-0.3018	0.8193
0.85	246.0	0.281	0.8762
0.85	270.0	0.7002	0.7432
0.85	282.0	-0.9385	0.7839
0.85	294.0	0.221	0.7364
0.85	306.0	1.2039	0.6435
0.85	318.0	0.2591	0.7136
0.85	330.0	0.2878	0.7813
0.95	294.0	0.336	0.7731

CLAS Physics Database