Measurement E151M2220

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:	0.765
Q²:	0.496 GeV²
W:	1355.0 GeV
E_beam:	2.999 GeV
ε:	0.9229

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.55	66.0	-1.1018	0.7613
0.55	78.0	0.9946	0.8952
0.55	90.0	0.5028	0.6408
0.55	102.0	-0.93	0.8101
0.65	66.0	0.2409	0.9087
0.65	78.0	-0.4355	0.7996
0.65	90.0	1.1186	0.7664
0.65	258.0	0.6802	0.6879
0.65	282.0	0.3368	0.6544
0.75	66.0	-0.24	0.8264
0.75	78.0	0.0262	0.723
0.75	90.0	-0.1353	0.6495
0.75	102.0	-0.1722	0.7919
0.75	114.0	0.2384	0.9416
0.75	246.0	0.632	0.8339
0.75	258.0	1.3131	0.6487
0.75	270.0	-0.3228	0.6847
0.75	282.0	0.196	0.6059
0.75	294.0	-0.8439	0.63
0.75	306.0	-1.2631	0.6784
0.75	318.0	-0.4629	0.6615
0.85	66.0	-0.2272	0.9244
0.85	78.0	-0.3622	0.6748
0.85	90.0	0.5598	0.8343
0.85	102.0	-0.5568	0.6717
0.85	114.0	-0.8759	0.8061
0.85	126.0	1.2766	0.808
0.85	234.0	0.5816	0.8878
0.85	246.0	0.2901	0.6719
0.85	258.0	0.9448	0.6688
0.85	270.0	-0.5582	0.6729
0.85	282.0	0.1808	0.6703
0.85	294.0	0.7342	0.6237
0.85	306.0	0.3789	0.577
0.85	318.0	0.9572	0.5447
0.85	330.0	0.1125	0.6153
0.95	90.0	0.2233	0.7262
0.95	234.0	-0.1206	0.7951
0.95	246.0	0.6819	0.6292
0.95	258.0	0.0438	0.6442
0.95	270.0	0.5422	0.7392
0.95	282.0	0.5437	0.6818
0.95	306.0	0.683	0.6932
0.95	318.0	-0.0531	0.7036
0.95	330.0	0.3096	0.7469

CLAS Physics Database