Measurement E151M1986

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:	0.197
Q²:	0.0496 GeV²
W:	1325.0 GeV
E_beam:	2.2596 GeV
ε:	0.9646

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.45	66.0	-0.1536	0.6646
0.55	78.0	1.0182	0.5705
0.65	78.0	0.3079	0.6028
0.65	246.0	-0.4027	0.5389
0.65	258.0	1.3142	0.6001
0.75	114.0	-1.4324	0.5784
0.75	126.0	0.0115	0.7981
0.75	138.0	-0.1868	0.6716
0.75	234.0	-0.6318	0.715
0.75	246.0	-0.5634	0.6168
0.75	258.0	0.0669	0.6293
0.75	270.0	1.2178	0.5938
0.85	114.0	-1.0368	0.7926
0.85	126.0	0.4695	0.7226
0.85	138.0	-0.1121	0.7997
0.85	234.0	0.3923	0.7433
0.85	246.0	0.4617	0.6156
0.85	258.0	1.346	0.5173
0.85	270.0	-0.2455	0.6456
0.45	78.0	1.3441	1.4989
0.55	78.0	0.4821	1.7187
0.65	258.0	1.7491	1.4006
0.75	126.0	0.1082	1.8368
0.75	138.0	2.8243	1.6461
0.75	246.0	-0.1608	1.4327
0.75	258.0	0.8602	1.2326
0.85	114.0	-2.208	1.9321
0.85	138.0	-0.7356	2.0493
0.85	234.0	-0.8002	1.8166
0.85	246.0	2.4812	1.584
0.85	258.0	-2.0053	1.3799
0.85	270.0	-0.49	1.5582

CLAS Physics Database