Measurement E151M2413

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:	0.0917
Q²:	0.2445 GeV²
W:	1835.0 GeV
E_beam:	2.999 GeV
ε:	0.7945

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.85	90.0	-1.1629	0.9579
0.85	102.0	-0.6955	1.0858
0.85	186.0	0.6694	1.2047
0.85	198.0	-1.4217	0.9483
0.85	210.0	-1.2885	0.8939
0.85	222.0	-0.9384	0.9138
0.85	234.0	-1.3733	0.9936
0.95	210.0	0.149	1.0105
0.95	222.0	-0.2833	0.9591

CLAS Physics Database