Measurement E151M1934

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:	0.024
Q²:	0.0415 GeV²
W:	1715.0 GeV
E_beam:	1.9889 GeV
ε:	0.7259

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.45	270.0	-1.7097	0.6956	0.1079
0.55	270.0	1.2333	0.8586	0.0805
0.65	126.0	-1.0113	0.8093	0.0682
0.65	138.0	-2.0187	0.6585	0.1259
0.65	198.0	-2.2134	2.2134	0.1374
0.65	222.0	0.6582	0.7811	0.0499
0.75	66.0	0.3613	0.8604	0.0371
0.75	210.0	-1.0316	0.7903	0.0693
0.75	270.0	-0.7106	0.6386	0.0525
0.75	282.0	-0.371	0.7373	0.0375
0.85	114.0	-0.1448	0.8595	0.0313
0.85	126.0	-0.3441	0.6453	0.0365
0.85	138.0	-0.5471	0.7915	0.0447
0.85	198.0	0.9917	0.8052	0.0672
0.85	210.0	0.0153	0.8661	0.03
0.85	222.0	-0.4428	0.7816	0.0402

CLAS Physics Database