Measurement E151M1973

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:	0.2366
Q²:	0.0496 GeV²
W:	1295.0 GeV
E_beam:	2.2596 GeV
ε:	0.9699

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.75	258.0	-1.558	1.7466	0.1463
0.85	246.0	-0.9358	1.9037	0.0911
0.65	258.0	-0.881	0.6413	0.0647
0.75	258.0	-0.12	0.5908	0.031
0.75	270.0	-0.3769	0.4846	0.0387
0.85	114.0	1.094	0.6918	0.0772
0.85	126.0	-0.4109	0.7272	0.0402
0.85	258.0	0.137	0.6649	0.0313
0.85	270.0	-1.0027	0.6404	0.0718

CLAS Physics Database