CLAS Physics Database

Measurement E151M3230

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: 0.598
Q2: 0.2915 GeV2
W: 1355.0 GeV
Ebeam: 2.2596 GeV
ε: 0.906

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.75 90.0 -0.2632 0.2423
0.75 246.0 -0.0807 0.2606
0.85 90.0 -0.1224 0.2625
0.85 102.0 -0.3255 0.2461
0.95 306.0 0.3091 0.2315
0.65 270.0 -0.2849 0.2463
0.75 78.0 0.1758 0.2557
0.75 102.0 0.1523 0.2481
0.85 90.0 0.2026 0.2474
0.85 102.0 0.1394 0.2312
0.85 114.0 -0.224 0.2292
0.85 246.0 -0.4029 0.2278
0.85 270.0 0.2574 0.2426
0.85 282.0 -0.202 0.2448
0.85 294.0 0.2679 0.2195
0.95 270.0 0.3598 0.2217
0.95 294.0 -0.1335 0.2432