Measurement E151M1345

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:	0.0057
Q²:	0.0023 GeV²
W:	1385.0 GeV
E_beam:	1.0539 GeV
ε:	0.7727

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.45	42.0	0.0039	1.012
0.45	54.0	-0.2674	0.721
0.45	222.0	-0.3999	0.7314
0.45	234.0	1.0386	0.9043
0.55	42.0	0.0885	0.7803
0.55	54.0	-0.7608	0.6492
0.55	66.0	-1.0872	0.9415
0.55	150.0	-0.8087	0.7809
0.55	162.0	0.1223	1.0112
0.55	174.0	-0.7692	0.8879
0.55	210.0	1.4743	0.7698
0.55	222.0	1.1498	0.7555
0.55	234.0	-0.4284	0.5419
0.55	246.0	-0.6292	0.6795
0.55	258.0	0.6957	0.8618
0.65	18.0	-0.126	0.9024
0.65	30.0	0.7668	0.6938
0.65	42.0	-0.6603	0.5981
0.65	54.0	0.1807	0.527
0.65	66.0	-1.0991	0.9923
0.65	138.0	-1.1606	0.8933
0.65	150.0	0.5818	0.8534
0.65	162.0	0.6961	0.7698
0.65	174.0	-1.0876	0.7995
0.65	186.0	-2.0403	0.7836
0.65	210.0	-1.9187	0.669
0.65	222.0	-0.0369	0.637
0.65	234.0	0.0583	0.4875
0.65	246.0	-0.2864	0.5581
0.65	258.0	2.0142	0.7652
0.75	54.0	-0.278	0.7668
0.75	150.0	-0.1225	0.9327
0.75	162.0	-1.8743	0.7627
0.75	186.0	-1.384	0.9186
0.75	210.0	-0.5525	0.678
0.75	222.0	0.2566	0.5818
0.75	234.0	-0.4825	0.5148
0.75	246.0	0.6714	0.5429
0.75	258.0	0.6631	0.8597
0.85	210.0	-0.1466	0.8995
0.85	222.0	-0.109	0.6836
0.85	234.0	-1.2294	0.5508
0.85	246.0	1.0356	0.579

CLAS Physics Database