Measurement E151M1408

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:	0.0149
Q²:	0.0121 GeV²
W:	1475.0 GeV
E_beam:	1.0539 GeV
ε:	0.6004

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.35	30.0	0.0271	0.9335	0.0302
0.35	42.0	-1.0816	0.6822	0.1256
0.35	54.0	-1.5283	0.5008	0.175
0.35	66.0	-1.9101	0.6023	0.2175
0.45	42.0	-0.3346	0.6663	0.0482
0.45	54.0	0.9532	0.5469	0.1116
0.45	66.0	0.2587	0.817	0.0419
0.45	210.0	-1.6274	0.8412	0.186
0.45	222.0	-0.0024	0.7701	0.03
0.45	234.0	-0.4835	0.7328	0.0622
0.45	246.0	-0.5614	0.7548	0.0701
0.45	258.0	-0.6577	0.8575	0.08
0.55	30.0	0.8202	0.8573	0.0973
0.55	42.0	-0.7744	0.7481	0.0924
0.55	54.0	0.2891	0.7514	0.0443
0.55	150.0	-0.667	0.7806	0.081
0.55	174.0	-1.0179	0.734	0.1187
0.55	222.0	-1.7478	0.6296	0.1994
0.55	234.0	-0.1176	0.6579	0.0328
0.55	246.0	0.513	0.6083	0.0652
0.65	42.0	0.1414	0.7721	0.034
0.65	54.0	-0.1486	0.8682	0.0344
0.65	162.0	-0.2297	0.7391	0.0396
0.65	174.0	-0.5389	0.779	0.0678
0.65	210.0	-0.0749	0.8572	0.0312
0.65	222.0	1.4272	0.662	0.1637
0.65	234.0	-0.5864	0.6257	0.0726
0.65	246.0	-0.5258	0.6167	0.0665
0.65	258.0	0.1033	0.6968	0.0322
0.75	222.0	0.7154	0.6815	0.0861
0.75	234.0	0.0056	0.6647	0.03
0.75	246.0	-0.1035	0.5892	0.0322
0.85	222.0	-0.0379	0.5947	0.0303
0.85	234.0	-1.149	0.4955	0.133
0.85	246.0	-0.5123	0.6166	0.0651

CLAS Physics Database