Measurement E151M2221

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:	0.7915
Q²:	0.5925 GeV²
W:	1355.0 GeV
E_beam:	2.999 GeV
ε:	0.9092

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.65	78.0	-0.1784	0.8333
0.65	90.0	0.6809	0.8292
0.65	102.0	-0.7461	0.8647
0.65	258.0	-1.335	0.6923
0.65	282.0	1.1546	0.7925
0.75	78.0	-0.6276	0.7614
0.75	90.0	1.2188	0.7299
0.75	102.0	-0.0699	0.8755
0.75	246.0	0.2428	0.8615
0.75	258.0	0.2254	0.7181
0.75	270.0	1.0698	0.7152
0.75	282.0	0.309	0.8238
0.75	294.0	0.2201	0.8181
0.85	78.0	-1.6735	0.7214
0.85	102.0	1.5575	0.7831
0.85	246.0	1.6964	0.6223
0.85	258.0	-0.2807	0.5972
0.85	270.0	0.3941	0.7106
0.85	282.0	1.0938	0.7539
0.85	294.0	0.9714	0.8277
0.85	306.0	0.6809	0.7951
0.85	318.0	0.732	0.772
0.95	246.0	-0.4743	0.8043
0.95	270.0	0.7043	0.688
0.95	282.0	-0.062	0.7379
0.95	294.0	0.9453	0.7043

CLAS Physics Database