Measurement E151M2378

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:	0.1593
Q²:	0.348 GeV²
W:	1745.0 GeV
E_beam:	2.999 GeV
ε:	0.8205

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.85	78.0	-0.7494	0.9301	0.0621
0.85	198.0	-1.0546	0.8651	0.0821
0.85	210.0	-0.9985	1.0501	0.0784
0.85	222.0	0.2195	0.9833	0.034
0.85	234.0	0.6634	0.8044	0.0567
0.85	246.0	0.813	0.9247	0.0661
0.85	258.0	-1.9049	0.814	0.1414
0.95	162.0	-1.3606	0.9632	0.1031
0.95	186.0	1.174	0.9119	0.0903
0.95	198.0	-1.6797	0.813	0.1254
0.95	210.0	0.0617	0.9849	0.0303
0.95	222.0	1.7158	0.7122	0.128
0.95	234.0	-0.6165	0.7122	0.0538
0.95	246.0	-0.8377	0.9856	0.0677
0.95	258.0	0.0846	0.7902	0.0306

CLAS Physics Database