Measurement E151M1733

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_LL
ε_L:	0.6625
Q²:	0.205 GeV²
W:	1295.0 GeV
E_beam:	1.9889 GeV
ε:	0.9207

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.25	66.0	-0.15	0.7141
0.25	294.0	0.7497	0.7146
0.25	306.0	-0.3342	0.6514
0.35	78.0	0.0573	0.6797
0.45	66.0	0.2066	0.654
0.45	78.0	-0.4057	0.7408
0.55	270.0	0.275	0.6168
0.55	282.0	0.5446	0.6077
0.65	90.0	-0.3112	0.73
0.65	102.0	-0.3684	0.7442
0.65	258.0	0.9622	0.6508
0.65	270.0	0.6028	0.5072
0.65	282.0	-1.1606	0.4581
0.75	78.0	0.7286	0.7258
0.75	90.0	0.1117	0.5302
0.75	102.0	-0.486	0.4449
0.75	114.0	0.7417	0.5672
0.75	246.0	0.3808	0.6167
0.75	258.0	0.0516	0.5343
0.75	270.0	-0.0096	0.4159
0.75	282.0	-0.0682	0.4586
0.75	294.0	-0.0406	0.5398
0.85	78.0	-0.2304	0.5495
0.85	90.0	-0.0801	0.4791
0.85	102.0	0.5132	0.4664
0.85	114.0	-0.823	0.5103
0.85	126.0	-0.3379	0.5904
0.85	138.0	-1.2837	0.5869
0.85	234.0	1.3026	0.5293
0.85	246.0	0.1527	0.4783
0.85	258.0	0.6643	0.3915
0.85	270.0	0.2128	0.4793
0.85	282.0	0.6557	0.5311
0.85	294.0	1.2336	0.5094
0.95	78.0	-0.3849	0.5531
0.95	90.0	0.6198	0.4811
0.95	102.0	-0.0275	0.4676
0.95	114.0	0.2211	0.5503
0.95	126.0	0.1958	0.548
0.95	138.0	0.7687	0.5031
0.95	150.0	0.584	0.6583
0.95	162.0	-0.089	0.6465
0.95	174.0	-0.8309	0.5723
0.95	246.0	-0.1245	0.4623
0.95	258.0	0.2092	0.5397
0.95	270.0	0.2305	0.4791
0.95	282.0	-0.8065	0.5301
0.95	294.0	0.1493	0.5875

CLAS Physics Database