CLAS Physics Database

Measurement E151M3525

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: 0.3553
Q2: 0.496 GeV2
W: 1565.0 GeV
Ebeam: 2.999 GeV
ε: 0.8672

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.55 90.0 -0.1837 0.249
0.65 102.0 0.0505 0.2347
0.65 114.0 -0.1828 0.2635
0.65 246.0 0.2092 0.2679
0.75 66.0 0.4638 0.2294
0.75 102.0 0.164 0.2384
0.75 222.0 -0.3412 0.2383
0.75 234.0 -0.6082 0.1676
0.75 246.0 0.0291 0.251
0.85 54.0 0.2625 0.2678
0.85 210.0 -0.0251 0.2592
0.85 222.0 -0.347 0.2352
0.85 234.0 0.0009 0.2391
0.85 246.0 0.1597 0.2166
0.85 258.0 -0.2281 0.2175
0.85 270.0 -0.259 0.2482
0.85 282.0 -0.212 0.2457
0.85 294.0 -0.1741 0.2717
0.95 222.0 0.0576 0.2512
0.95 234.0 0.1939 0.2588
0.95 246.0 0.0338 0.23
0.95 258.0 -0.3997 0.2518
0.95 270.0 -0.4456 0.2424
0.95 282.0 -0.1605 0.1916
0.95 294.0 0.1175 0.1946
0.95 306.0 -0.1061 0.2343
0.95 318.0 -0.0519 0.2518