Measurement E151M1701

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:	0.6926
Q²:	0.1205 GeV²
W:	1235.0 GeV
E_beam:	1.9889 GeV
ε:	0.956

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.35	66.0	-0.1118	0.6137	0.0308
0.45	66.0	0.6952	0.6272	0.0517
0.45	78.0	0.1552	0.5577	0.0314
0.45	282.0	0.0678	0.5489	0.0303
0.55	78.0	-0.5674	0.547	0.0456
0.55	270.0	-0.1316	0.4607	0.031
0.55	282.0	-0.6207	0.5041	0.0481
0.65	258.0	0.3548	0.6402	0.0369
0.65	270.0	-0.6217	0.372	0.0482
0.65	282.0	0.5407	0.4793	0.0444
0.75	102.0	-0.5223	0.6111	0.0436
0.75	258.0	-0.2966	0.4906	0.035
0.75	270.0	-0.7914	0.3979	0.0566
0.75	282.0	0.6242	0.4445	0.0483
0.85	90.0	-0.5407	0.5235	0.0444
0.85	102.0	0.3738	0.5009	0.0376
0.85	114.0	0.5388	0.4113	0.0443
0.85	126.0	-0.0682	0.4445	0.0303
0.85	138.0	-0.2523	0.5831	0.0337
0.85	258.0	-0.4746	0.4657	0.0416
0.85	270.0	-0.1382	0.4823	0.0311
0.95	90.0	0.8501	0.4435	0.0596
0.95	102.0	0.2167	0.4313	0.0327
0.95	114.0	0.8932	0.4162	0.0619
0.95	126.0	-0.411	0.3979	0.039
0.95	138.0	-0.2407	0.4928	0.0334
0.95	150.0	1.1361	0.3719	0.0751
0.95	162.0	-0.7072	0.4586	0.0523
0.95	174.0	-0.4667	0.5024	0.0412
0.95	186.0	1.1877	0.4477	0.078
0.95	246.0	0.3632	0.5289	0.0372

CLAS Physics Database