Measurement E151M307

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:	0.4351
Q²:	0.2445 GeV²
W:	1355.0 GeV
E_beam:	1.3383 GeV
ε:	0.7279

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.65	270.0	0.906	1.1044	0.0623
0.65	282.0	-0.1045	0.94	0.0307
0.75	126.0	-0.6567	0.8624	0.0496
0.75	246.0	-0.8105	0.6007	0.0573
0.85	102.0	-0.5539	0.8474	0.0449
0.85	114.0	-0.2632	1.0102	0.0339
0.85	126.0	0.9587	1.2115	0.0651
0.85	150.0	0.3103	1.0193	0.0353
0.85	258.0	1.6438	1.2439	0.1034
0.85	282.0	1.6967	1.1966	0.1065
0.85	294.0	0.3933	0.7748	0.0382
0.85	306.0	-0.5731	0.7281	0.0457
0.95	294.0	0.2293	0.9609	0.033
0.55	258.0	-0.9783	0.6407	0.0676
0.65	258.0	-0.4518	0.5992	0.041
0.65	270.0	-0.5778	0.5961	0.0467
0.75	234.0	-0.1469	0.6823	0.0313
0.75	246.0	-0.5243	0.6142	0.0442
0.75	270.0	-0.0119	0.6587	0.03
0.75	282.0	-0.8153	0.6146	0.0587
0.85	114.0	-0.5027	0.6288	0.0432
0.85	126.0	-0.6913	0.6296	0.0523
0.85	138.0	0.1649	0.616	0.0317
0.85	234.0	-0.043	0.6513	0.0301
0.85	246.0	-0.2661	0.6096	0.0342
0.85	258.0	-0.0391	0.6419	0.0301
0.85	270.0	-1.2491	0.4796	0.083
0.85	282.0	0.1761	0.559	0.0319
0.85	294.0	-1.4516	0.4933	0.0948
0.85	306.0	0.0014	0.6359	0.03
0.95	138.0	-0.1393	0.6046	0.0312
0.95	270.0	0.0255	0.5293	0.03
0.95	294.0	0.2014	0.528	0.0325

CLAS Physics Database