Measurement E151M480

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:	0.7731
Q²:	0.1435 GeV²
W:	1235.0 GeV
E_beam:	1.9889 GeV
ε:	0.9507

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.35	66.0	0.738	0.5692	0.0542
0.45	66.0	-0.3516	0.5087	0.0369
0.45	78.0	-0.97	0.372	0.0665
0.45	282.0	-0.3587	0.4134	0.0372
0.55	78.0	-0.0911	0.5918	0.0305
0.55	270.0	0.0271	0.5544	0.03
0.55	282.0	-0.1776	0.3911	0.0319
0.65	258.0	0.3572	0.5424	0.0371
0.65	270.0	0.2856	0.4222	0.0347
0.65	282.0	0.0813	0.3963	0.0304
0.75	90.0	-0.5245	0.4983	0.0439
0.75	258.0	-0.1706	0.3671	0.0318
0.75	270.0	0.372	0.3611	0.0377
0.75	282.0	1.1032	0.4407	0.0738
0.85	90.0	-0.2884	0.3973	0.0348
0.85	102.0	-0.3386	0.3508	0.0365
0.85	114.0	-0.4724	0.353	0.0417
0.85	126.0	-0.3994	0.4081	0.0387
0.85	258.0	-0.9499	0.3633	0.0654
0.85	270.0	-0.4407	0.3821	0.0403
0.85	282.0	0.4735	0.5484	0.0417
0.95	78.0	-0.268	0.4384	0.0342
0.95	90.0	-0.4248	0.3447	0.0397
0.95	102.0	0.2282	0.4202	0.0331
0.95	114.0	-0.0465	0.4615	0.0301
0.95	126.0	0.2062	0.3942	0.0325
0.95	138.0	0.3657	0.4087	0.0374
0.95	150.0	0.0962	0.4451	0.0306
0.95	174.0	0.6492	0.4603	0.0498

CLAS Physics Database