Measurement E151M1958

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:	0.868
Q²:	0.1715 GeV²
W:	1235.0 GeV
E_beam:	2.2596 GeV
ε:	0.9577

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.55	78.0	-0.6257	0.4768
0.55	270.0	-0.1404	0.5266
0.55	282.0	-0.131	0.4181
0.65	282.0	-2.4203	2.1495
0.75	90.0	-2.5818	2.8745
0.75	270.0	-2.6772	2.3428
0.75	282.0	1.228	2.425
0.85	90.0	2.9069	3.2954
0.85	102.0	6.0291	2.4775
0.95	114.0	1.0971	9.3167
0.95	126.0	-6.2854	8.8062
0.95	138.0	-0.0816	9.8022
0.55	294.0	-0.192	0.49
0.65	270.0	-1.1986	0.3894
0.65	282.0	-0.5522	0.4342
0.75	270.0	-0.2068	0.5197
0.75	282.0	0.2331	0.4822
0.85	90.0	-0.0491	0.4856
0.85	102.0	0.9294	0.5065
0.85	114.0	-0.8726	0.5287
0.85	270.0	0.3075	0.5613
0.85	282.0	0.6263	0.5695
0.95	90.0	-0.3068	0.869
0.95	102.0	0.3366	0.8285
0.95	114.0	0.1963	0.8088
0.95	126.0	-1.193	0.8236

CLAS Physics Database