Measurement E151M1590

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:	0.0228
Q²:	0.0143 GeV²
W:	1475.0 GeV
E_beam:	1.3383 GeV
ε:	0.773

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.45	42.0	0.3777	0.9343	0.0372
0.45	222.0	0.7418	0.9975	0.0525
0.45	234.0	-1.1338	0.5209	0.0733
0.55	18.0	-0.5902	0.9449	0.0456
0.55	30.0	0.286	0.5921	0.0451
0.55	42.0	0.5677	0.5398	0.0494
0.55	54.0	-0.0661	1.2662	0.0302
0.55	126.0	-0.4687	0.6421	0.0449
0.55	138.0	-0.4939	0.5732	0.0545
0.55	150.0	0.965	1.2519	0.0636
0.55	210.0	0.2674	0.5886	0.0584
0.55	222.0	-1.4704	0.4868	0.0931
0.55	234.0	0.196	0.4852	0.0323
0.55	246.0	-1.0704	0.5128	0.0703
0.65	126.0	-0.5887	0.6257	0.053
0.65	138.0	0.2895	0.5557	0.046
0.65	150.0	0.0539	0.5618	0.0324
0.65	162.0	-0.0426	0.9137	0.0301
0.65	210.0	-0.4721	0.5249	0.0434
0.65	222.0	-0.2045	0.5742	0.0323
0.65	234.0	-0.8142	0.4847	0.057
0.65	246.0	0.5003	0.5673	0.0499
0.75	126.0	-1.1751	1.1571	0.0746
0.75	138.0	-0.2824	0.7172	0.0344
0.75	150.0	-1.587	0.7117	0.0997
0.75	210.0	-0.2289	0.6127	0.0378
0.75	222.0	-0.8851	0.4199	0.0648
0.75	234.0	0.0746	0.4371	0.0546
0.75	246.0	0.0199	0.5385	0.0302
0.85	126.0	-0.3856	0.6496	0.0378
0.85	150.0	0.3406	0.7814	0.0363
0.85	210.0	0.0458	0.5571	0.0305
0.85	222.0	0.6424	0.5212	0.0488
0.85	234.0	-1.0301	0.3938	0.0888
0.85	246.0	0.022	0.5819	0.0352

CLAS Physics Database