Measurement E151M2090

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:	0.2461
Q²:	0.2445 GeV²
W:	1535.0 GeV
E_beam:	2.2596 GeV
ε:	0.8457

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.85	210.0	-0.193	1.0071	0.0325
0.85	222.0	-1.4988	0.8977	0.102
0.85	246.0	0.3445	0.8864	0.0374
0.85	258.0	-1.3493	0.829	0.0928
0.95	258.0	0.3182	1.4818	0.0364
0.95	282.0	-0.5623	1.2175	0.0473
0.75	114.0	-2.4477	1.0432	0.2269
0.85	246.0	-1.0143	1.0721	0.0979
0.85	258.0	0.4621	1.074	0.052
0.95	234.0	-1.4769	3.1845	0.139
0.95	270.0	3.8482	2.6219	0.3549

CLAS Physics Database