Measurement E151M2428

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:	0.0356
Q²:	0.101 GeV²
W:	1895.0 GeV
E_beam:	2.999 GeV
ε:	0.7924

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.75	270.0	-0.0407	1.0683	0.0301
0.85	102.0	-1.3159	0.8458	0.1
0.85	114.0	0.3075	0.9868	0.0374
0.85	186.0	-0.3193	0.9854	0.0379
0.85	198.0	-1.9731	0.9004	0.1462
0.85	210.0	-0.6043	0.9715	0.0531
0.85	222.0	-2.0098	0.8319	0.1488

CLAS Physics Database