Measurement E151M1640

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:	0.1108
Q²:	0.1435 GeV²
W:	1535.0 GeV
E_beam:	1.3383 GeV
ε:	0.5748

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.65	222.0	-1.0803	1.0161
0.85	234.0	-0.4499	0.9136
0.65	246.0	0.1904	1.1508
0.65	258.0	-0.2243	1.1972
0.75	246.0	0.7368	1.2026

CLAS Physics Database