Measurement E151M1347

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:	0.0147
Q²:	0.0059 GeV²
W:	1385.0 GeV
E_beam:	1.0539 GeV
ε:	0.7684

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.55	42.0	0.4311	0.9174	0.0571
0.55	54.0	-0.7543	0.8634	0.0902
0.55	222.0	-0.8992	0.8813	0.1058
0.55	234.0	-0.3476	0.6939	0.0494
0.55	246.0	0.9265	0.8383	0.1087
0.65	54.0	-0.7316	0.8397	0.0878
0.65	222.0	0.9633	0.8534	0.1127
0.65	234.0	0.3435	0.77	0.049
0.65	246.0	-0.3176	0.7547	0.0467
0.75	222.0	0.7079	0.7173	0.0853
0.75	234.0	-0.9801	0.762	0.1145
0.75	246.0	-0.6274	0.8219	0.0769
0.85	234.0	1.1881	0.8113	0.1373
0.85	246.0	0.4928	0.8487	0.0632

CLAS Physics Database