Measurement E151M2163

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:	1.1684
Q²:	0.205 GeV²
W:	1205.0 GeV
E_beam:	2.999 GeV
ε:	0.9761

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.35	66.0	-0.2593	0.6787	0.0354
0.45	282.0	-0.7269	0.7225	0.0606
0.55	282.0	0.0579	0.5605	0.0303
0.65	270.0	-0.3999	0.7679	0.0417
0.65	282.0	-0.6658	0.5115	0.0568
0.65	294.0	0.4406	0.5559	0.0438
0.75	66.0	0.2868	0.6799	0.0365
0.75	78.0	0.8547	0.7456	0.0689
0.75	90.0	-0.1415	0.6884	0.0317
0.75	258.0	0.0049	0.7959	0.03
0.75	270.0	0.6456	0.6131	0.0556
0.75	282.0	0.5932	0.497	0.0524
0.75	294.0	-0.1412	0.6006	0.0317
0.85	66.0	0.765	0.481	0.0631
0.85	78.0	0.5968	0.5533	0.0527
0.85	90.0	0.1766	0.5073	0.0326
0.85	102.0	-0.1582	0.5439	0.0321
0.85	114.0	0.4699	0.8238	0.0454
0.85	258.0	0.5269	0.7797	0.0486
0.85	270.0	-0.1599	0.6801	0.0322
0.85	282.0	-0.4762	0.5502	0.0457
0.85	294.0	-1.0576	0.661	0.0824
0.95	54.0	0.4661	0.567	0.0452
0.95	66.0	0.4603	0.5257	0.0449
0.95	78.0	0.0685	0.5924	0.0304
0.95	90.0	0.6821	0.5341	0.0578
0.95	102.0	-0.1403	0.6359	0.0317
0.95	114.0	0.238	0.5563	0.0346
0.95	126.0	0.8819	0.5923	0.0706

CLAS Physics Database