Measurement E151M498

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:	0.9096
Q²:	0.2915 GeV²
W:	1265.0 GeV
E_beam:	1.9889 GeV
ε:	0.9062

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty
0.25	66.0	-0.0823	0.4957
0.35	66.0	-0.6797	0.4959
0.55	282.0	0.1893	0.5407
0.65	270.0	0.8771	0.5408
0.65	282.0	0.189	0.4295
0.65	294.0	0.0503	0.5391
0.75	78.0	0.4423	0.6373
0.75	90.0	-0.5723	0.4357
0.75	102.0	1.2384	0.5588
0.75	258.0	1.3475	0.549
0.75	270.0	-0.1502	0.5241
0.75	282.0	-0.0312	0.4955
0.75	294.0	-0.9486	0.4179
0.85	66.0	-0.0036	0.6038
0.85	78.0	0.7042	0.4685
0.85	90.0	0.5347	0.6936
0.85	102.0	-0.3488	0.492
0.85	114.0	-0.6143	0.4567
0.85	246.0	-0.3962	0.4972
0.85	258.0	0.2131	0.5331
0.85	270.0	-0.0578	0.5468
0.85	282.0	0.0734	0.4455
0.85	294.0	0.8286	0.5262
0.95	90.0	-0.023	0.483
0.95	126.0	-0.3785	0.4172
0.95	150.0	-0.2977	0.5219
0.95	294.0	1.2301	0.471

CLAS Physics Database