Measurement E151M2379

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:	0.177
Q²:	0.4155 GeV²
W:	1745.0 GeV
E_beam:	2.999 GeV
ε:	0.8052

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.85	78.0	-0.063	1.0216
0.85	90.0	-0.4437	0.9883
0.85	210.0	-0.0741	0.9867
0.85	234.0	1.6799	0.8881
0.85	246.0	0.3338	0.9746
0.95	186.0	0.1558	1.0449
0.95	198.0	-2.3318	0.7201
0.95	210.0	1.7624	0.9015
0.95	222.0	0.2907	0.989
0.95	234.0	1.2227	0.9231
0.95	246.0	-0.8143	0.8575
0.95	258.0	-0.3064	0.8732
0.95	282.0	0.3742	0.9471

CLAS Physics Database