Measurement E151M1750

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:	0.6685
Q²:	0.2915 GeV²
W:	1325.0 GeV
E_beam:	1.9889 GeV
ε:	0.8864

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.65	270.0	-1.7488	0.4947	0.1101
0.65	282.0	1.2965	0.6477	0.0841
0.75	90.0	1.07	0.6696	0.0714
0.75	102.0	0.1472	0.6196	0.0313
0.75	258.0	-0.0781	0.6335	0.0304
0.75	270.0	0.0412	0.6971	0.0301
0.75	282.0	-0.1683	0.7129	0.0317
0.75	294.0	0.9683	0.5243	0.0659
0.85	78.0	-0.4546	0.5349	0.0407
0.85	90.0	0.7465	0.5854	0.0543
0.85	102.0	-0.1534	0.6447	0.0314
0.85	114.0	0.2685	0.6917	0.0341
0.85	126.0	-0.443	0.7203	0.0403
0.85	234.0	0.7061	0.6162	0.0523
0.85	246.0	-0.1492	0.7795	0.0313
0.85	258.0	0.2665	0.5462	0.0341
0.85	270.0	0.4962	0.6702	0.0425
0.85	282.0	-0.0174	0.6263	0.03
0.85	294.0	0.6566	0.6779	0.0498
0.85	306.0	-0.4867	0.5806	0.0421
0.95	90.0	-0.2235	0.6677	0.0329
0.95	102.0	-0.2986	0.6355	0.035
0.95	114.0	0.0152	0.7918	0.03
0.95	126.0	1.277	0.6064	0.083
0.95	246.0	0.2643	0.6661	0.034
0.95	270.0	-0.3532	0.5321	0.0369
0.95	282.0	0.8902	0.5511	0.0617
0.95	294.0	0.1495	0.5466	0.0313
0.95	306.0	0.99	0.5907	0.0671

CLAS Physics Database