Measurement E151M1254

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:	0.3683
Q²:	0.0593 GeV²
W:	1235.0 GeV
E_beam:	1.0539 GeV
ε:	0.8751

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.05	42.0	-0.5586	0.665
0.15	42.0	1.0887	0.4639
0.15	54.0	0.3062	0.5373
0.25	42.0	-0.363	0.5399
0.25	54.0	-0.075	0.5883
0.35	42.0	0.5211	0.6447
0.45	270.0	0.7814	0.4608
0.45	282.0	0.042	0.4098
0.45	294.0	0.3494	0.655
0.55	258.0	-0.3204	0.4167
0.55	270.0	-0.0448	0.392
0.55	282.0	-0.052	0.3559
0.55	294.0	-0.2174	0.5459
0.65	246.0	-0.182	0.4247
0.65	258.0	0.1782	0.3284
0.65	270.0	-0.4521	0.2929
0.65	282.0	0.2422	0.3771
0.65	294.0	0.1936	0.5646
0.75	138.0	-0.312	0.673
0.75	150.0	-0.3038	0.6111
0.75	162.0	-0.0351	0.6268
0.75	246.0	0.337	0.4783
0.75	258.0	0.2561	0.3229
0.75	270.0	0.4384	0.3174
0.75	282.0	0.3434	0.4253
0.75	294.0	-1.1355	0.5497
0.85	126.0	0.3401	0.5373
0.85	138.0	-0.6422	0.4304
0.85	150.0	-0.4004	0.3939
0.85	162.0	0.0514	0.4284
0.85	174.0	0.7126	0.3876
0.85	186.0	0.7403	0.3771
0.85	198.0	-0.3059	0.4323
0.85	210.0	0.2989	0.4726
0.85	222.0	-0.703	0.613
0.85	234.0	0.1667	0.596
0.85	246.0	0.473	0.4229
0.85	258.0	0.1735	0.3738
0.85	270.0	0.1661	0.3619
0.85	282.0	0.1686	0.5573
0.95	126.0	1.1198	0.377
0.95	138.0	-0.2141	0.39
0.95	150.0	1.0296	0.3296
0.95	162.0	0.1557	0.4001
0.95	174.0	-0.2274	0.3944
0.95	186.0	1.3379	1.3379
0.95	198.0	-0.836	0.435
0.95	210.0	-0.1116	0.4228
0.95	222.0	-0.0293	0.501

CLAS Physics Database