Measurement E151M1473

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:	0.777
Q²:	0.2915 GeV²
W:	1265.0 GeV
E_beam:	1.3383 GeV
ε:	0.7741

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.75	114.0	-0.37	0.7276	0.0373
0.85	102.0	-0.6506	0.7077	0.0492
0.55	270.0	-1.104	1.0701	0.0709
0.85	102.0	0.7428	0.9695	0.0526
0.85	114.0	1.0956	1.265	0.0704
0.85	150.0	1.4717	0.661	0.0907
0.85	270.0	1.4316	0.5798	0.0885
0.85	294.0	-1.0898	0.7865	0.0701
0.95	138.0	-0.9353	0.7169	0.0621

CLAS Physics Database