CLAS Physics Database

Measurement E151M3079

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: 0.2542
Q2: 0.2915 GeV2
W: 1535.0 GeV
Ebeam: 1.9889 GeV
ε: 0.7733

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty syst. uncert.
0.65 114.0 0.0382 0.2723 0.03
0.75 102.0 0.4785 0.2421 0.0315
0.75 246.0 0.168 0.2649 0.0302
0.75 258.0 -0.1735 0.2753 0.0302
0.85 234.0 -0.8057 0.1755 0.0341
0.85 246.0 -0.4209 0.2254 0.0312
0.85 258.0 -0.4124 0.223 0.0311
0.95 78.0 -0.2475 0.2885 0.0304
0.95 258.0 -0.0136 0.2842 0.03
0.95 270.0 -0.4042 0.2482 0.0311
0.95 282.0 -0.2262 0.2265 0.0303
0.95 294.0 -0.6061 0.22 0.0324