Measurement E151M2008

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:	0.598
Q²:	0.2915 GeV²
W:	1355.0 GeV
E_beam:	2.2596 GeV
ε:	0.906

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.75	90.0	0.5899	1.5446	0.062
0.75	246.0	-0.0134	1.3725	0.03
0.85	90.0	1.7845	1.6584	0.1667
0.85	102.0	4.1204	1.527	0.3799
0.95	306.0	10.2381	10.2381	0.9414
0.65	270.0	-1.6348	0.5768	0.1105
0.75	78.0	0.4947	0.6735	0.044
0.75	102.0	1.161	0.6463	0.0813
0.85	90.0	-0.3004	0.7144	0.0358
0.85	102.0	0.009	0.7157	0.03
0.85	114.0	-0.2065	0.7012	0.0329
0.85	246.0	0.1417	0.7831	0.0314
0.85	270.0	-0.2882	0.7347	0.0354
0.85	282.0	0.5664	0.6877	0.0475
0.85	294.0	0.5914	0.6155	0.0488
0.95	270.0	2.6565	0.8962	0.1754
0.95	294.0	0.9237	1.049	0.0672

CLAS Physics Database