Measurement E151M1922

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:	0.0383
Q²:	0.0593 GeV²
W:	1685.0 GeV
E_beam:	1.9889 GeV
ε:	0.7478

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.45	78.0	0.2299	0.7379
0.45	270.0	-0.454	0.5885
0.45	282.0	0.5442	0.6893
0.55	114.0	-0.9651	0.6834
0.55	126.0	-0.9323	0.6283
0.55	198.0	0.5093	0.7116
0.55	222.0	-1.6726	0.6541
0.65	114.0	-0.1612	0.7753
0.65	138.0	0.2145	0.6913
0.65	210.0	0.1421	0.6903
0.65	222.0	-1.6256	0.561
0.65	294.0	-0.8735	0.6759
0.75	66.0	-0.5572	0.737
0.75	198.0	-0.3151	0.6462
0.75	210.0	-0.1395	0.6664
0.75	222.0	-0.8972	0.6511
0.75	234.0	0.661	0.713
0.75	270.0	1.2169	0.5827
0.75	282.0	0.4038	0.5398
0.75	294.0	-0.5698	0.7358
0.85	102.0	-0.1285	0.7192
0.85	114.0	1.7738	0.5788
0.85	126.0	-0.4232	0.7012
0.85	198.0	-0.7389	0.7149
0.85	210.0	-0.0115	0.656
0.85	222.0	-1.1936	0.5674

CLAS Physics Database