CLAS Physics Database

Measurement E151M2402

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: ALL
εL: 0.1154
Q2: 0.2915 GeV2
W: 1805.0 GeV
Ebeam: 2.999 GeV
ε: 0.8009

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALL uncertainty syst. uncert.
0.75 222.0 0.3033 1.0828 0.0372
0.85 90.0 -0.5975 1.1085 0.0527
0.85 210.0 0.6367 1.0252 0.0551
0.95 210.0 2.147 0.8316 0.1586
0.95 222.0 1.2634 0.9904 0.0964
0.95 234.0 0.1365 0.9646 0.0316