Measurement E151M1709

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:	0.2444
Q²:	0.0415 GeV²
W:	1265.0 GeV
E_beam:	1.9889 GeV
ε:	0.9682

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.25	306.0	-0.5551	0.6
0.35	78.0	-0.0857	0.5008
0.35	294.0	0.617	0.6705
0.35	306.0	0.0877	0.6217
0.45	66.0	-0.3805	0.5869
0.45	78.0	0.4276	0.3978
0.45	90.0	0.0251	0.4991
0.45	294.0	0.2932	0.5963
0.55	78.0	0.6863	0.3981
0.55	90.0	-1.0415	0.3665
0.55	102.0	0.199	0.6819
0.55	258.0	-0.2745	0.5956
0.55	270.0	0.6266	0.4605
0.55	282.0	0.1015	0.6485
0.65	78.0	-1.2067	0.5554
0.65	90.0	0.2188	0.4357
0.65	102.0	0.0878	0.6578
0.65	246.0	-0.2091	0.4405
0.65	258.0	0.143	0.4052
0.65	270.0	0.2829	0.3664
0.75	102.0	0.3863	0.676
0.75	114.0	-1.3792	0.475
0.75	126.0	-0.6832	0.5624
0.75	138.0	0.411	0.633
0.75	150.0	0.3691	0.5641
0.75	222.0	0.855	0.5758
0.75	234.0	0.1845	0.4456
0.75	246.0	0.1418	0.3891
0.75	258.0	-0.3478	0.3633
0.75	270.0	0.0729	0.4534
0.85	114.0	-0.289	0.5831
0.85	126.0	0.2776	0.51
0.85	138.0	0.8166	0.4158
0.85	150.0	-0.1884	0.408
0.85	162.0	-0.053	0.5101
0.85	174.0	0.6413	0.4704
0.85	186.0	1.1068	0.5618
0.85	222.0	1.0404	0.5066
0.85	234.0	0.0733	0.47
0.85	246.0	0.5308	0.4125
0.85	258.0	-0.3056	0.3965
0.95	138.0	0.3209	0.5517
0.95	150.0	0.0909	0.5903
0.95	162.0	-0.1082	0.5749

CLAS Physics Database