Measurement E151M1387

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:	0.0113
Q²:	0.0071 GeV²
W:	1445.0 GeV
E_beam:	1.0539 GeV
ε:	0.667

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.35	42.0	-0.7243	0.7351	0.087
0.35	54.0	0.0185	0.881	0.0301
0.45	42.0	-0.583	0.7383	0.0723
0.45	54.0	-0.4913	0.5849	0.063
0.45	234.0	1.0716	0.7874	0.1245
0.55	42.0	0.6582	0.7619	0.0801
0.55	54.0	-0.5889	0.7065	0.0729
0.55	222.0	-1.3065	0.7984	0.1504
0.55	234.0	-0.7605	0.7252	0.0909
0.55	246.0	0.1458	0.8631	0.0342
0.65	162.0	-0.565	0.8912	0.0704
0.65	210.0	-0.7873	0.8404	0.0937
0.65	222.0	0.9627	0.6463	0.1126
0.65	234.0	0.108	0.5809	0.0324
0.65	246.0	0.2975	0.7539	0.045
0.75	210.0	-0.1067	0.8344	0.0323
0.75	222.0	-0.4436	0.7251	0.0583
0.75	234.0	0.8359	0.7455	0.0989
0.75	246.0	-0.2216	0.7703	0.039
0.75	258.0	0.1484	0.8472	0.0344
0.85	222.0	-0.2526	0.6485	0.0414
0.85	234.0	-0.6736	0.6575	0.0817
0.85	246.0	1.3528	0.6441	0.1555

CLAS Physics Database