Measurement E151M1242

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:	0.0541
Q²:	0.0071 GeV²
W:	1235.0 GeV
E_beam:	1.0539 GeV
ε:	0.9208

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.55	258.0	-1.4078	0.519
0.65	246.0	1.2596	0.4651
0.65	258.0	0.439	0.5368
0.65	270.0	0.499	0.593
0.75	258.0	0.0689	0.609

CLAS Physics Database