CLAS Physics Database

Measurement E151M3333

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: 0.1135
Q2: 0.1205 GeV2
W: 1595.0 GeV
Ebeam: 2.2596 GeV
ε: 0.8511

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty syst. uncert.
0.65 114.0 0.0129 0.2582 0.03
0.65 126.0 -0.0496 0.241 0.03
0.75 126.0 -0.1897 0.2551 0.0302
0.75 138.0 -0.2164 0.2569 0.0303
0.75 282.0 0.2893 0.251 0.0306
0.75 294.0 -0.0512 0.2321 0.03
0.85 90.0 0.1612 0.2305 0.0302
0.85 102.0 0.2389 0.2576 0.0304
0.85 234.0 -0.2414 0.2197 0.0304
0.65 222.0 0.0738 0.2483 0.03
0.75 210.0 -0.1585 0.2534 0.0302
0.75 222.0 -0.048 0.2549 0.03
0.85 90.0 0.4343 0.2197 0.0312
0.85 210.0 0.1743 0.2527 0.0302
0.85 234.0 0.0581 0.2517 0.03
0.85 246.0 0.1486 0.2347 0.0301