CLAS Physics Database

Measurement E151M3097

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: 0.03
Q2: 0.0291 GeV2
W: 1595.0 GeV
Ebeam: 1.9889 GeV
ε: 0.8364

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.35 78.0 0.0421 0.269
0.35 282.0 0.0625 0.2816
0.45 78.0 -0.2244 0.2245
0.45 258.0 0.169 0.2706
0.45 270.0 0.02 0.2752
0.55 78.0 -0.1775 0.2583
0.55 126.0 0.2411 0.229
0.55 138.0 0.0639 0.2646
0.55 150.0 0.1036 0.2706
0.55 258.0 -0.0061 0.2638
0.55 270.0 -0.1953 0.2516
0.55 282.0 -0.0763 0.2748
0.65 114.0 0.2338 0.2515
0.65 126.0 -0.5588 0.2023
0.65 210.0 0.361 0.2593
0.65 222.0 -0.2346 0.2491
0.75 66.0 -0.1577 0.2879
0.75 78.0 -0.397 0.2315
0.75 138.0 -0.1348 0.2809
0.75 210.0 0.0769 0.2373
0.75 222.0 -0.0718 0.2277
0.75 234.0 0.1388 0.259
0.75 258.0 0.1299 0.2788
0.75 270.0 -0.0208 0.2529
0.75 282.0 -0.2587 0.2077
0.85 114.0 -0.2348 0.2252
0.85 126.0 0.1824 0.2242
0.85 138.0 0.3996 0.2623
0.85 198.0 0.297 0.2479
0.85 210.0 0.0374 0.243
0.85 222.0 0.2993 0.2176
0.85 234.0 0.3435 0.258
0.85 270.0 0.3215 0.2518