Measurement E151M1403

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:	0.0063
Q²:	0.005 GeV²
W:	1475.0 GeV
E_beam:	1.0539 GeV
ε:	0.61

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.35	42.0	0.3393	0.9454	0.0486
0.35	54.0	-0.9323	0.8755	0.1093
0.45	54.0	-0.8027	0.8009	0.0954
0.45	222.0	1.5957	0.7461	0.1825
0.55	210.0	-0.2657	0.8728	0.0424
0.55	234.0	1.1562	0.7402	0.1338
0.75	222.0	0.7592	0.8032	0.0907
0.75	234.0	-0.5538	0.7237	0.0693
0.85	222.0	0.5136	0.7151	0.0652
0.85	234.0	0.6837	0.7495	0.0827

CLAS Physics Database