CLAS Physics Database

Measurement E151M663

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: AUL
εL: 0.1394
Q2: 0.1715 GeV2
W: 1595.0 GeV
Ebeam: 1.9889 GeV
ε: 0.7773

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] AUL uncertainty syst. uncert.
0.55 114.0 0.3649 0.8507 0.0374
0.65 114.0 -0.7394 0.7408 0.0543
0.75 114.0 0.7466 0.8856 0.0546
0.75 126.0 -1.0088 0.6806 0.0686
0.75 210.0 1.1555 0.7683 0.0768
0.75 222.0 -1.1522 0.6401 0.0766
0.75 246.0 2.9008 2.9008 0.1799
0.85 90.0 1.158 0.7098 0.0769
0.85 102.0 -1.4857 0.5799 0.0957
0.85 234.0 0.8235 0.6842 0.0586
0.85 246.0 0.2081 0.7773 0.0326
0.85 258.0 3.3918 3.3918 0.2096
0.95 222.0 -0.6117 0.6278 0.048
0.95 234.0 -0.0805 0.6849 0.0304
0.95 258.0 -0.9521 0.5563 0.0655