Measurement E151M2389

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:	0.1128
Q²:	0.2445 GeV²
W:	1775.0 GeV
E_beam:	2.999 GeV
ε:	0.8281

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.75	198.0	0.4149	1.1366	0.0425
0.85	78.0	-0.1519	0.9763	0.032
0.85	102.0	0.6027	1.0975	0.053
0.85	186.0	0.4333	1.0933	0.0434
0.85	198.0	0.6289	0.965	0.0546
0.85	210.0	1.4101	0.8463	0.1066
0.85	222.0	1.1777	0.9153	0.0905
0.85	234.0	-1.2161	0.8411	0.0931
0.85	246.0	-0.3937	1.0299	0.0414
0.95	198.0	1.4603	1.0868	0.1101
0.95	210.0	-1.1326	0.7998	0.0874
0.95	222.0	-1.3689	0.8547	0.1037
0.95	234.0	0.8378	0.8675	0.0678
0.95	246.0	-1.0843	0.9108	0.0842

CLAS Physics Database