Measurement E151M1695

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:	0.3024
Q²:	0.0415 GeV²
W:	1235.0 GeV
E_beam:	1.9889 GeV
ε:	0.9735

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.55	78.0	0.7847	0.5586
0.55	90.0	0.227	0.6218
0.65	90.0	-0.0019	0.5743
0.65	258.0	-1.0255	0.4685
0.65	270.0	0.6479	0.4974
0.75	126.0	0.04	0.6104
0.75	246.0	0.3632	0.5523
0.75	258.0	-0.2774	0.4175
0.75	270.0	-0.4818	0.5081
0.85	126.0	-0.1138	0.611
0.85	138.0	1.1438	0.4827
0.85	150.0	-0.5363	0.4969
0.85	174.0	-0.812	0.5525
0.85	246.0	0.9209	0.5586
0.95	150.0	0.2108	0.5874
0.95	162.0	-0.3047	0.5422

CLAS Physics Database