Measurement E151M2376

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:	0.1251
Q²:	0.2445 GeV²
W:	1745.0 GeV
E_beam:	2.999 GeV
ε:	0.8431

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.65	114.0	-0.345	1.0546	0.0391
0.65	126.0	0.8241	1.1024	0.0669
0.75	90.0	0.5064	1.003	0.0474
0.75	186.0	0.7792	0.9872	0.064
0.75	198.0	0.3727	0.962	0.0404
0.75	234.0	-0.5217	0.9191	0.0483
0.75	294.0	1.1458	0.9045	0.0883
0.85	78.0	0.392	0.8473	0.0413
0.85	90.0	-1.0303	0.7172	0.0805
0.85	102.0	-0.6785	0.8704	0.0576
0.85	114.0	-0.7576	0.9881	0.0626
0.85	186.0	-0.5693	1.0755	0.051
0.85	198.0	-0.2597	0.8382	0.0354
0.85	210.0	-0.8556	0.7892	0.0689
0.85	222.0	0.7137	0.7714	0.0598
0.85	234.0	-2.3373	0.7284	0.1721
0.85	246.0	-1.1844	0.9358	0.091
0.95	174.0	-0.7741	0.8384	0.0636
0.95	198.0	-0.2645	0.9624	0.0356
0.95	210.0	-0.9271	0.9093	0.0736
0.95	222.0	0.073	0.8499	0.0305
0.95	234.0	0.7666	0.6593	0.0632
0.95	246.0	-0.3126	0.8737	0.0376
0.95	270.0	-2.3465	0.7268	0.1728

CLAS Physics Database