Measurement E151M1907

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:	0.0318
Q²:	0.0415 GeV²
W:	1655.0 GeV
E_beam:	1.9889 GeV
ε:	0.7836

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.35	78.0	-2.8347	2.8347
0.35	270.0	0.6738	0.6998
0.45	90.0	0.8282	0.882
0.45	126.0	-1.4922	0.8065
0.45	258.0	0.3794	0.7031
0.45	270.0	-0.575	0.7583
0.45	282.0	-0.7678	0.7394
0.55	114.0	0.3501	0.8832
0.55	126.0	-1.1775	0.7565
0.55	138.0	-0.3811	0.7865
0.55	210.0	0.3477	0.7162
0.55	222.0	0.7495	0.7108
0.55	258.0	-1.9293	0.639
0.55	270.0	-0.3283	0.5389
0.55	282.0	-0.6801	0.7819
0.55	318.0	-0.6528	0.8219
0.65	114.0	1.0442	0.7269
0.65	126.0	0.236	0.6465
0.65	138.0	0.8302	0.6398
0.65	150.0	1.0008	0.7762
0.65	198.0	-1.6793	0.6522
0.65	210.0	0.058	0.7511
0.65	222.0	-1.4404	0.5668
0.65	270.0	0.6145	0.7902
0.65	282.0	-0.1194	0.6722
0.75	66.0	-0.416	0.6926
0.75	78.0	1.2788	0.7733
0.75	138.0	-1.7914	0.6862
0.75	198.0	0.0589	0.7251
0.75	210.0	-0.733	0.6997
0.75	222.0	0.1363	0.6308
0.75	234.0	-0.3291	0.802
0.75	258.0	-0.5962	0.6278
0.75	270.0	0.6805	0.5379
0.75	282.0	0.2925	0.5667
0.75	294.0	-0.9325	0.6298
0.85	114.0	0.3517	0.6285
0.85	126.0	1.304	0.58
0.85	138.0	-0.6314	0.8131
0.85	150.0	0.0702	0.8305
0.85	210.0	-0.0291	0.602
0.85	222.0	0.5647	0.6662
0.85	234.0	0.1567	0.6588
0.85	246.0	-2.1442	2.1442
0.85	258.0	-0.2879	0.747
0.85	270.0	-0.3774	0.755
0.85	282.0	0.676	0.7639

CLAS Physics Database