Measurement E151M1909

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:	0.044
Q²:	0.0593 GeV²
W:	1655.0 GeV
E_beam:	1.9889 GeV
ε:	0.7757

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.35	18.0	-1.1711	0.723
0.35	270.0	-0.4733	0.6295
0.35	282.0	-0.0885	0.761
0.45	78.0	-0.6822	0.6864
0.45	270.0	-0.6777	0.6974
0.45	282.0	-1.8771	0.6084
0.45	294.0	0.8827	0.7769
0.55	78.0	-1.0076	0.7145
0.55	126.0	-2.1683	0.6126
0.55	138.0	-0.6901	0.8265
0.55	210.0	-0.5507	0.8282
0.55	222.0	0.1793	0.8107
0.55	258.0	-0.9367	0.7976
0.55	270.0	-0.1799	0.5959
0.55	282.0	-0.7003	0.7265
0.65	114.0	-1.2392	0.7871
0.65	126.0	-0.3967	0.7408
0.65	198.0	-0.4574	0.7605
0.65	210.0	-0.4257	0.7044
0.65	222.0	-0.6485	0.6948
0.65	258.0	1.0749	0.7811
0.65	282.0	-0.873	0.6991
0.65	294.0	0.7635	0.6996
0.75	66.0	-0.1583	0.671
0.75	126.0	0.8854	0.8364
0.75	198.0	-1.6734	0.7889
0.75	210.0	-0.5678	0.7311
0.75	222.0	-0.1265	0.6483
0.75	234.0	-1.1306	0.7183
0.75	246.0	0.1451	0.8439
0.75	270.0	-0.5298	0.5648
0.75	282.0	0.261	0.6045
0.75	294.0	0.2223	0.7045
0.85	114.0	-0.7094	0.7489
0.85	126.0	0.2555	0.732
0.85	186.0	-0.6039	0.7892
0.85	198.0	-1.4532	0.7361
0.85	210.0	-1.4419	0.4993
0.85	222.0	-0.2586	0.6243
0.85	234.0	0.2152	0.7515

CLAS Physics Database