Measurement E151M1969

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:	0.7987
Q²:	0.205 GeV²
W:	1265.0 GeV
E_beam:	2.2596 GeV
ε:	0.9462

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.55	282.0	-0.4187	0.5389	0.0405
0.65	282.0	0.1872	0.4497	0.0324
0.75	90.0	-0.6067	0.5959	0.0496
0.75	102.0	0.1186	0.5999	0.031
0.75	258.0	-0.0267	0.5885	0.0301
0.75	270.0	-0.0177	0.5016	0.03
0.75	282.0	0.1107	0.4573	0.0309
0.75	294.0	-0.3408	0.4862	0.0373
0.85	78.0	-0.1918	0.5164	0.0325
0.85	90.0	-1.5539	0.486	0.1054
0.85	102.0	0.0893	0.5056	0.0306
0.85	246.0	1.457	0.5671	0.0994
0.85	258.0	-0.3601	0.5008	0.0381
0.85	282.0	0.2715	0.5444	0.0348
0.85	294.0	-1.1133	0.4787	0.0784
0.95	78.0	-0.4199	0.8479	0.0406
0.95	90.0	-1.2848	0.9473	0.0888
0.95	126.0	-0.2175	0.9308	0.0332
0.95	270.0	-1.7379	0.8529	0.117
0.35	66.0	-2.3374	2.0721	0.2169
0.55	270.0	-2.9518	1.6811	0.2729
0.55	282.0	-0.0914	1.6933	0.0312
0.65	282.0	0.7303	1.9995	0.0735
0.75	270.0	2.4385	1.825	0.2261
0.75	282.0	0.2264	1.8763	0.0365
0.85	114.0	1.5373	2.8193	0.1444
0.85	126.0	-0.8492	2.7889	0.0836
0.85	258.0	-1.0281	2.4587	0.0991
0.85	270.0	2.3086	2.0489	0.2143
0.85	282.0	5.2873	1.6205	0.4868
0.85	294.0	1.72	1.8788	0.1609
0.95	114.0	5.9699	0.7922	-0.1461
0.95	138.0	-6.5553	6.9462	0.6032

CLAS Physics Database