Measurement E151M215

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_UL
ε_L:	0.1105
Q²:	0.0143 GeV²
W:	1235.0 GeV
E_beam:	1.3383 GeV
ε:	0.9503

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.65	258.0	-0.2229	0.3734	0.033
0.75	174.0	-0.0926	0.4851	0.0305
0.75	234.0	-0.4715	0.4767	0.0419
0.75	246.0	0.5479	0.4682	0.0453
0.75	258.0	-0.2469	0.4003	0.0337
0.85	162.0	-0.7263	0.4561	0.0541
0.55	258.0	-0.5749	0.4861	0.0458
0.55	270.0	-0.1382	0.5942	0.0311
0.65	246.0	-0.6232	0.4776	0.048
0.65	258.0	-0.0382	0.588	0.0301
0.75	174.0	0.5416	0.886	0.0443
0.75	258.0	0.3539	0.6755	0.0368
0.75	270.0	0.1817	0.5872	0.0319

CLAS Physics Database