Measurement E151M2279

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:	0.4643
Q²:	0.5925 GeV²
W:	1505.0 GeV
E_beam:	2.999 GeV
ε:	0.8698

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.55	90.0	0.3076	0.7972	0.0374
0.65	78.0	0.6321	0.9056	0.0548
0.65	90.0	0.5408	0.7894	0.0494
0.65	114.0	0.0432	0.947	0.0302
0.75	90.0	-0.0974	0.8584	0.0308
0.75	114.0	0.9029	0.7923	0.072
0.75	246.0	0.984	0.8746	0.0774
0.75	270.0	0.127	0.8786	0.0314
0.85	54.0	-0.0283	0.9336	0.0301
0.85	102.0	0.875	0.8026	0.0702
0.85	222.0	0.337	0.8442	0.0387
0.85	234.0	-0.8159	0.8264	0.0663
0.85	246.0	2.0286	0.7089	0.1501
0.85	270.0	0.0714	0.7748	0.0304
0.85	282.0	0.1057	0.8525	0.031
0.85	294.0	-0.0318	0.73	0.0301
0.85	306.0	0.7159	0.8056	0.06
0.95	294.0	-0.1113	0.6436	0.0311
0.95	306.0	0.4663	0.6987	0.0452

CLAS Physics Database