Measurement E151M1857

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:	0.2542
Q²:	0.2915 GeV²
W:	1535.0 GeV
E_beam:	1.9889 GeV
ε:	0.7733

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.65	114.0	-0.2218	0.921
0.75	102.0	1.6742	0.8092
0.75	246.0	0.5865	0.8505
0.75	258.0	-1.4676	0.7726
0.85	234.0	1.1711	0.8943
0.85	246.0	-0.0245	0.7369
0.85	258.0	-0.2586	0.7518
0.95	78.0	0.5617	0.8366
0.95	258.0	0.5477	0.7939
0.95	270.0	-0.3994	0.7501
0.95	282.0	0.1818	0.6512
0.95	294.0	0.0259	0.7656

CLAS Physics Database