Measurement E151M1407

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:	0.0126
Q²:	0.0101 GeV²
W:	1475.0 GeV
E_beam:	1.0539 GeV
ε:	0.603

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.25	42.0	-0.501	0.8252	0.064
0.35	30.0	0.7477	0.8433	0.0895
0.35	42.0	0.4823	0.7065	0.0621
0.35	54.0	0.7629	0.6257	0.0911
0.35	66.0	0.4418	0.8307	0.0582
0.45	42.0	0.411	0.7573	0.0552
0.45	54.0	-0.7226	0.6386	0.0868
0.45	66.0	-1.1953	0.774	0.1381
0.45	222.0	-1.163	0.6643	0.1346
0.45	234.0	-0.9408	0.7345	0.1103
0.55	30.0	-0.7573	0.8376	0.0905
0.55	42.0	-0.8026	0.7124	0.0954
0.55	54.0	1.0298	0.8722	0.12
0.55	66.0	-1.9079	0.7503	0.2173
0.55	150.0	-0.185	0.8921	0.0365
0.55	162.0	-1.0004	0.8558	0.1168
0.55	186.0	-1.4449	0.7919	0.1657
0.55	210.0	1.4192	0.8005	0.1629
0.55	222.0	-1.0796	0.659	0.1254
0.55	234.0	0.1359	0.5746	0.0337
0.55	246.0	-0.9928	0.576	0.1159
0.55	258.0	-1.1274	0.7502	0.1306
0.65	42.0	0.6662	0.8725	0.0809
0.65	162.0	-0.6258	0.8835	0.0767
0.65	210.0	0.1984	0.85	0.0374
0.65	222.0	-0.4243	0.6598	0.0565
0.65	234.0	-0.5223	0.5668	0.0661
0.65	246.0	0.4814	0.7024	0.062
0.75	222.0	-0.4342	0.6988	0.0574
0.75	234.0	-0.1583	0.583	0.0349
0.75	246.0	-0.1432	0.5489	0.0341
0.85	210.0	-0.3352	0.832	0.0483
0.85	222.0	-0.5638	0.6269	0.0703
0.85	234.0	-0.4458	0.6328	0.0586
0.85	246.0	0.6634	0.5952	0.0806

CLAS Physics Database