Measurement E151M516

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:	0.1416
Q²:	0.0348 GeV²
W:	1325.0 GeV
E_beam:	1.9889 GeV
ε:	0.9567

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.25	306.0	-0.629	0.5575	0.0488
0.35	306.0	0.0511	0.5628	0.0302
0.45	78.0	-0.1953	0.5229	0.0323
0.45	90.0	-0.0433	0.5556	0.0301
0.45	282.0	-0.2767	0.5742	0.0344
0.45	294.0	-0.7798	0.5241	0.0563
0.55	78.0	0.2146	0.5142	0.0327
0.55	90.0	0.314	0.577	0.0356
0.55	102.0	0.2145	0.6733	0.0327
0.55	258.0	0.5791	0.671	0.0464
0.55	282.0	-0.0502	0.6057	0.0302
0.55	294.0	0.7986	0.6879	0.0573
0.65	78.0	-1.0523	0.4059	0.071
0.65	222.0	0.1384	0.6635	0.0312
0.65	234.0	-0.3643	0.5464	0.0374
0.65	246.0	0.0805	0.4471	0.0304
0.65	258.0	-0.6167	0.4369	0.0482
0.75	114.0	0.8372	0.6444	0.0593
0.75	126.0	0.5511	0.5448	0.0451
0.75	138.0	0.0954	0.5025	0.0306
0.75	234.0	-0.5415	0.3634	0.0447
0.75	246.0	-0.4073	0.3542	0.039
0.75	258.0	-0.3981	0.388	0.0386
0.75	270.0	0.0354	0.5969	0.0301
0.85	114.0	0.0229	0.6321	0.03
0.85	126.0	-0.2226	0.5084	0.0329
0.85	138.0	-1.1732	0.3621	0.0778
0.85	150.0	-0.8252	0.5455	0.0587
0.85	222.0	0.0829	0.5269	0.0304
0.85	234.0	-0.6153	0.4633	0.0481
0.85	246.0	-0.3903	0.4215	0.0383
0.85	258.0	0.6662	0.4439	0.0506

CLAS Physics Database