Measurement E151M1261

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:	0.7393
Q²:	0.205 GeV²
W:	1235.0 GeV
E_beam:	1.0539 GeV
ε:	0.7395

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.45	282.0	0.1679	0.6717	0.0355
0.55	270.0	-0.6135	0.4953	0.0754
0.55	282.0	0.0492	0.6403	0.0305
0.65	294.0	-0.3792	0.615	0.0522
0.75	270.0	-0.3201	0.5579	0.0469
0.85	126.0	-0.2393	0.658	0.0404
0.85	150.0	0.3113	0.6375	0.0462
0.95	186.0	0.8693	0.4757	0.1025

CLAS Physics Database