Measurement E151M1257

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:	0.5353
Q²:	0.101 GeV²
W:	1235.0 GeV
E_beam:	1.0539 GeV
ε:	0.8374

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
-0.05	42.0	1.2705	0.6389
0.05	42.0	-0.8579	0.5811
0.05	54.0	-0.4596	0.6826
0.15	42.0	-1.1488	0.5268
0.15	54.0	-0.4285	0.6928
0.35	282.0	0.2838	0.4739
0.45	270.0	0.1587	0.45
0.45	282.0	0.3518	0.4248
0.45	294.0	0.1052	0.4564
0.55	258.0	0.0084	0.575
0.55	270.0	-0.011	0.4071
0.55	282.0	-0.3561	0.3646
0.55	294.0	-0.3402	0.4751
0.65	258.0	0.4274	0.4251
0.65	270.0	-0.0618	0.3437
0.65	282.0	0.4938	0.3773
0.65	294.0	-0.1765	0.4264
0.75	246.0	0.7389	0.4718
0.75	258.0	0.4796	0.4084
0.75	270.0	0.1215	0.3554
0.75	282.0	0.4014	0.3878
0.75	294.0	0.8899	0.4623
0.85	114.0	0.7065	0.5846
0.85	126.0	-0.1164	0.5344
0.85	138.0	-0.1364	0.4545
0.85	150.0	0.1622	0.4636
0.85	162.0	-0.3845	0.4637
0.85	174.0	-0.1819	0.4586
0.85	186.0	-0.5766	0.4791
0.85	198.0	-0.4327	0.4678
0.85	210.0	-0.1027	0.4788
0.85	222.0	-0.1312	0.48
0.85	246.0	0.781	0.5377
0.85	258.0	0.703	0.4583
0.85	270.0	-0.3594	0.4245
0.85	282.0	0.7976	0.4532
0.95	78.0	-0.0411	0.535
0.95	126.0	0.3132	0.4158
0.95	138.0	0.1338	0.4066
0.95	150.0	0.6147	0.3665
0.95	162.0	-0.5463	0.3547
0.95	174.0	0.2633	0.3548
0.95	186.0	-0.322	0.4158
0.95	198.0	1.1087	0.3557
0.95	210.0	1.2084	0.3559
0.95	222.0	0.0515	0.46
0.95	234.0	0.134	0.4881

CLAS Physics Database