CLAS Physics Database

Measurement E151M3346

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: ALU
εL: 0.1151
Q2: 0.1435 GeV2
W: 1625.0 GeV
Ebeam: 2.2596 GeV
ε: 0.8257

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty syst. uncert.
0.85 222.0 -0.1054 0.2456 0.0301
0.85 234.0 0.4533 0.2336 0.0313
0.65 294.0 0.0082 0.2474 0.03
0.75 210.0 -0.1633 0.257 0.0302
0.85 102.0 0.2289 0.231 0.0303
0.85 234.0 -0.6058 0.23 0.0324