Measurement E151M2021

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:	0.5207
Q²:	0.2915 GeV²
W:	1385.0 GeV
E_beam:	2.2596 GeV
ε:	0.8964

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.85	102.0	0.1164	0.8053
0.85	222.0	0.967	0.9493
0.85	258.0	0.1721	0.8345
0.85	306.0	0.105	0.709
0.95	270.0	1.1131	0.9895
0.95	294.0	1.1879	1.1096
0.65	102.0	-0.6249	1.3407
0.75	102.0	0.8764	1.4178
0.75	270.0	-0.4504	1.2196
0.85	258.0	-1.0467	1.2631
0.85	270.0	2.1421	1.1717
0.85	282.0	-0.671	1.2026
0.85	294.0	0.6022	1.1519
0.95	282.0	2.4068	3.5002

CLAS Physics Database