Measurement E151M1913

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:	0.081
Q²:	0.1205 GeV²
W:	1655.0 GeV
E_beam:	1.9889 GeV
ε:	0.7479

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.65	126.0	-0.1229	0.8591	0.0309
0.65	222.0	0.1861	0.8324	0.032
0.65	282.0	0.4523	0.7851	0.0406
0.65	294.0	0.8112	0.7383	0.0576
0.75	126.0	0.8391	0.7412	0.059
0.75	138.0	0.2236	0.8359	0.0329
0.75	222.0	-1.1745	0.7284	0.0772
0.75	234.0	-0.8096	0.7066	0.0575
0.85	102.0	0.4334	0.8023	0.0399
0.85	126.0	1.4684	0.7053	0.0939
0.85	210.0	-1.7869	0.6197	0.1124
0.85	246.0	0.6749	0.7481	0.0507

CLAS Physics Database