Measurement E151M2188

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:	1.1084
Q²:	0.496 GeV²
W:	1265.0 GeV
E_beam:	2.999 GeV
ε:	0.938

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.05	66.0	1.3228	0.655
0.15	66.0	-0.7061	0.6936
0.35	282.0	-0.1683	0.7437
0.35	294.0	-0.3382	0.8165
0.45	294.0	-0.4365	0.6944
0.55	66.0	0.6882	0.794
0.55	78.0	0.5857	0.7684
0.55	90.0	0.2269	0.7973
0.55	270.0	-1.0318	0.6113
0.55	282.0	-0.0067	0.7006
0.55	294.0	0.2757	0.6914
0.65	66.0	-0.1966	0.6133
0.65	78.0	-0.2237	0.6855
0.65	102.0	-0.6001	0.825
0.65	270.0	1.1946	0.6472
0.65	282.0	-0.9611	0.6074
0.65	294.0	0.7228	0.5998
0.75	66.0	1.079	0.5936
0.75	78.0	0.081	0.6228
0.75	90.0	0.5753	0.7658
0.75	102.0	-0.0768	0.7375
0.75	258.0	-0.9732	0.6767
0.75	270.0	0.044	0.6718
0.75	282.0	-0.1226	0.6178
0.75	294.0	-0.8052	0.6176
0.75	306.0	0.2003	0.6787
0.85	54.0	-0.183	0.7081
0.85	66.0	1.3728	0.6505
0.85	78.0	-1.4705	0.5648
0.85	90.0	0.4417	0.6281
0.85	102.0	-0.8103	0.7003
0.85	246.0	1.2925	0.7534
0.85	258.0	-0.9245	0.7141
0.85	270.0	-0.8521	0.5467
0.85	282.0	-0.1577	0.6581
0.85	294.0	0.2601	0.707
0.85	318.0	-0.302	0.6134
0.95	114.0	-0.734	0.8117
0.95	270.0	1.0319	0.6258
0.95	282.0	-0.282	0.692
0.95	294.0	-0.589	0.5732

CLAS Physics Database