Measurement E151M2122

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:	0.0862
Q²:	0.101 GeV²
W:	1625.0 GeV
E_beam:	2.2596 GeV
ε:	0.8396

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.45	270.0	0.5758	0.8056
0.55	126.0	-0.5445	0.8444
0.75	234.0	-0.0417	0.8743
0.75	246.0	1.327	0.848
0.75	282.0	-1.2238	0.6654
0.75	294.0	0.445	0.8117
0.85	102.0	0.9807	0.8141
0.85	222.0	-0.021	0.9558
0.85	234.0	-0.9346	0.8746
0.45	282.0	0.375	0.7233
0.65	114.0	-0.5864	0.945
0.65	138.0	-0.5206	0.9169
0.75	138.0	0.5538	0.9948
0.75	222.0	-0.7121	0.949
0.75	234.0	0.4338	0.8475
0.85	90.0	1.2262	0.9788
0.85	102.0	0.2313	1.1996
0.85	222.0	0.3621	0.9614
0.85	234.0	-0.4745	0.9922

CLAS Physics Database