Measurement E151M1765

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:	0.5774
Q²:	0.2915 GeV²
W:	1355.0 GeV
E_beam:	1.9889 GeV
ε:	0.8748

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.15	66.0	-0.0188	0.8643
0.35	66.0	-0.3442	0.843
0.65	90.0	-0.4117	0.7117
0.65	102.0	1.2808	0.736
0.65	258.0	-0.0862	0.6684
0.75	90.0	-0.1312	0.7915
0.75	102.0	0.956	0.7034
0.75	126.0	1.3664	0.7115
0.75	246.0	0.4621	0.7864
0.75	258.0	0.3739	0.7286
0.75	270.0	-0.3278	0.7465
0.75	282.0	0.659	0.615
0.85	90.0	-0.6743	0.6549
0.85	102.0	-0.9567	0.6378
0.85	114.0	1.0195	0.5807
0.85	222.0	1.0758	0.6861
0.85	234.0	-0.9348	0.6058
0.85	246.0	0.4197	0.6114
0.85	258.0	-1.2533	0.5181
0.85	270.0	0.709	0.6004
0.85	282.0	0.2088	0.6369
0.85	294.0	0.3859	0.5095
0.95	90.0	-0.4368	0.6507
0.95	102.0	0.1078	0.6913
0.95	258.0	1.3996	0.5978
0.95	270.0	0.0934	0.6685
0.95	282.0	0.5324	0.5997
0.95	294.0	0.8355	0.5919
0.95	306.0	0.2435	0.5894

CLAS Physics Database