Measurement E151M1367

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:	0.0119
Q²:	0.0059 GeV²
W:	1415.0 GeV
E_beam:	1.0539 GeV
ε:	0.7217

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.45	42.0	-0.6557	0.8292
0.45	54.0	-0.49	0.7576
0.55	30.0	-0.2146	0.9331
0.55	42.0	-1.0254	0.816
0.55	54.0	0.0097	0.8884
0.55	222.0	-0.4333	0.9331
0.55	234.0	0.9542	0.8036
0.55	246.0	-0.996	0.8859
0.65	42.0	-0.1327	0.8799
0.65	54.0	0.3373	0.781
0.65	234.0	-1.2325	0.8102
0.65	246.0	-0.5012	0.9005
0.75	234.0	0.3158	0.7322
0.75	246.0	0.9731	0.7949
0.85	234.0	0.0977	0.6982

CLAS Physics Database