Measurement E151M2400

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:	0.0889
Q²:	0.205 GeV²
W:	1805.0 GeV
E_beam:	2.999 GeV
ε:	0.8211

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.85	78.0	-0.3299	1.067
0.85	90.0	-0.4314	0.9379
0.85	102.0	1.7115	0.8605
0.85	114.0	0.7502	1.0061
0.85	186.0	-0.5439	0.9958
0.85	198.0	-0.8468	0.9627
0.85	210.0	-1.1746	0.7906
0.85	222.0	0.6184	0.8925
0.85	234.0	-1.8773	0.9182
0.95	186.0	0.6912	1.0654
0.95	210.0	-0.586	0.8733
0.95	222.0	-2.1746	0.8119
0.95	234.0	-1.0018	0.9776

CLAS Physics Database