Measurement E151M2181

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:	0.6625
Q²:	0.1435 GeV²
W:	1265.0 GeV
E_beam:	2.999 GeV
ε:	0.9771

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.25	66.0	-1.2461	0.7323
0.35	66.0	0.3765	0.6591
0.35	78.0	-0.9548	0.7892
0.45	282.0	-0.9794	0.844
0.55	270.0	0.4282	0.5998
0.55	282.0	0.3331	0.6615
0.55	294.0	1.2248	0.701
0.65	258.0	0.5433	0.8523
0.65	270.0	1.1868	0.5781
0.65	282.0	0.2001	0.4622
0.65	294.0	-0.2869	0.667
0.75	78.0	0.6689	0.8029
0.75	90.0	1.5309	0.601
0.75	102.0	-1.3989	0.6596
0.75	258.0	-0.1956	0.646
0.75	270.0	-0.4015	0.5305
0.75	282.0	0.6495	0.5589
0.75	294.0	0.1241	0.5651
0.85	78.0	0.3972	0.5775
0.85	90.0	0.2061	0.6133
0.85	102.0	0.2636	0.5125
0.85	114.0	-0.3575	0.5768
0.85	126.0	0.8869	0.9367
0.85	246.0	1.0342	0.6464
0.85	258.0	-0.1116	0.6471
0.85	270.0	0.0949	0.5612
0.85	282.0	-0.2036	0.5708
0.85	294.0	0.0638	0.6412
0.95	78.0	0.746	0.5798
0.95	90.0	0.6638	0.5619
0.95	102.0	0.0435	0.6454
0.95	114.0	-0.4183	0.5783
0.95	126.0	-0.3966	0.5483
0.95	138.0	0.1115	0.705
0.95	246.0	0.817	0.7229
0.95	258.0	0.064	0.5517

CLAS Physics Database