Measurement E151M1305

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:	0.0227
Q²:	0.0059 GeV²
W:	1325.0 GeV
E_beam:	1.0539 GeV
ε:	0.8444

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.45	42.0	-0.5826	0.8202	0.0722
0.55	246.0	1.7474	0.7645	0.1994
0.65	234.0	0.8008	0.6927	0.0952
0.65	246.0	-0.1488	0.6557	0.0344
0.65	258.0	-0.5116	0.7811	0.065
0.75	234.0	0.2992	0.8116	0.0452
0.75	246.0	0.9021	0.7656	0.1061
0.85	234.0	0.1391	0.7427	0.0339
0.85	246.0	0.6636	0.6802	0.0806

CLAS Physics Database