CLAS Physics Database

Measurement E151M3298

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: 0.2792
Q2: 0.2445 GeV2
W: 1505.0 GeV
Ebeam: 2.2596 GeV
ε: 0.8607

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty syst. uncert.
0.65 102.0 -0.0716 0.2307 0.03
0.75 102.0 0.1855 0.246 0.0302
0.75 234.0 -0.2522 0.231 0.0304
0.85 78.0 -0.4928 0.2267 0.0316
0.85 234.0 -0.0797 0.2579 0.03
0.85 270.0 -0.0797 0.2499 0.03
0.65 126.0 -0.1341 0.2567 0.0301
0.75 102.0 -0.5051 0.2214 0.0317
0.75 222.0 -0.2594 0.2469 0.0304
0.75 234.0 0.0862 0.2347 0.03
0.85 234.0 -0.0369 0.2622 0.03
0.85 258.0 0.138 0.2433 0.0301