Measurement E151M2035

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:	0.4552
Q²:	0.2915 GeV²
W:	1415.0 GeV
E_beam:	2.2596 GeV
ε:	0.8858

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.75	90.0	0.9548	0.659
0.75	102.0	0.195	0.5965
0.85	102.0	-1.0534	0.7217
0.85	234.0	1.0879	0.8669
0.85	258.0	0.3088	0.8594
0.85	270.0	-0.9768	0.7473
0.85	282.0	0.2019	0.8322
0.95	306.0	0.3919	1.0303
0.75	114.0	0.9792	1.3434
0.75	126.0	-0.1175	1.3858
0.75	258.0	0.4289	1.1167
0.85	270.0	0.9328	1.1444

CLAS Physics Database